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HomeMy WebLinkAbout20150998 Ver 1_FINAL Sutton Const Permit Response to TR-01_20151222Geosplec consultants Mr. Edward F. Mussler, III, P.E. Supervisor Permitting Branch Solid Waste Section Division of Waste Management North Carolina Department of Environmental Quality 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Subject: Response to First Technical Review Permit to Construct Application L.V. Sutton Energy Complex, Landfill New Hanover County, NC, DIN 24956 Dear Mr. Mussler: Geosyntec Consultants of NC, PC 1300 South Mint Street, Suite 410 Charlotte, North Carolina 28203 PH 704.227.0840 www.geosyntec.com 8 December 2015 On behalf of Duke Energy Progress, LLC (Duke), Geosyntec Consultants of North Carolina, PC (Geosyntec) has prepared this letter to respond to the first technical review (TR -01) from the North Carolina Department of Environmental Quality (NCDEQ) regarding the "Onsite CCR Landfill Construction Application Report" (Application) for the onsite CCR landfill in the L.V. Sutton Energy Complex (Sutton) located in New Hanover County, North Carolina. The Application was received by NCDEQ on 7 August 2015. TR -01 was addressed to Mr. John Toepfer of Duke in a letter dated 7 October 2015. A copy of this TR -01 is included as Attachment A of this response letter. Each NCDEQ comment has been provided below in italic font followed by the corresponding response in normal font. In this response, deletions to the original document have been shown with a strilethfough and additions have been shown with an underline. RESPONSE TO NCDEQ CONCERNS NCDEO Comment #1 The Section has been notified that the 4011404 wetlands permitting process has begun, however no applications have been received by the North Carolina Division of Water Resources (DWR). Duke Energy must keep the Section updated regularly on the wetlands permitting process. The decision on how to move forward in light of the issue has not been finally determined. Have demonstrations been made in accordance with the newly promulgated CCR rules? When an application is submitted to DWR and the U.S. Army Corps of Engineers, please copy the section on the submittal. GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 2 Response # 1: NCDEQ's comment is duly noted. A meeting was held with representatives of the US Army Corps of Engineers (Corps) and the NCDEQ on 30 October 2015 to discuss the determination of wetland boundaries and the process forward to permit and mitigate any wetland impacts within the landfill footprint. Based on the discussions with the Corps during that meeting, the general understanding was that the wetlands within the landfill footprint will likely be considered isolated and non jurisdictional. This results from the new Waters of the United States rule being temporarily suspended nationwide by the Sixth District Court on 9 October 2015. Verbal confirmation that the wetlands are not jurisdictional has been received from the Corps and a permit application is being prepared for impacts as isolated wetlands through the NCDEQ. An application is expected to be submitted in late November 2015. A jurisdictional determination package was submitted by Duke Energy to the Corps for review and approval on 5 November 2015. A copy of this package was sent to NCDEQ Solid Waste Section. Duke will keep the Department informed about the progress of the wetlands permitting process. NCDEQ Comment #2 Section 3.4 — The Section has questions with the volume estimates for available onsite suitable soils. There is indication of a large soil imbalance for the construction and operation of the facility. The estimates provided in the application indicate a deficit of approximately 650,000 cubic yards of onsite suitable soils. What efforts are being made to identify suitable borrow sources? There is also concern that onsite storage areas may not be adequate for stored soils, Duke Energy should provide more detail on these areas and their storage capacity. Response # 2: Duke's contracting mechanism for construction of the proposed onsite CCR landfill is such that the landfill contractor will be responsible for identifying and obtaining suitable soils for the construction, operation, and closure of the onsite CCR landfill. Therefore, limited on-site storage will be required during construction and operation activities. Additionally, necessary storage/staging areas will be identified once a contractor has been selected and will initially be limited to the proposed project footprint. However, areas north of the landfill footprint may also be used for storing and/or stockpiling soils during construction and operation of the final cells. NCDEQ Comment #3 Section 3.3 — Include the landfill's proposed gross airspace capacity. Gross capacity is defined as the volume from the top of protective cover through the final cover. For permitting purposes this will also be needed for the cells/phases if they are incrementally constructed. GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 3 Response # 3: As shown on Sheet 5 of the Construction Permit Application Drawings (Drawings), submitted as Appendix A of the Report, the landfill's gross airspace (i.e., top of operating layer to the base of the final cover) is approximately 8,748,987 cubic yards (cy). Sheet 5 of the Drawings also provides the estimated airspace for individual cells. The proposed gross airspace capacity table from Sheet 5 of the Drawings has been reproduced herein for completeness. Additionally, Section 3.3 of the Report has been updated to reference the Drawings. Construction Approximate Estimated Airspace Estimated Sequence Waste Footprint Available for Waste Lifetime (acres) Disposal (c) (years) Cell 3 10.1 840,787 0.9 Cell 4 9.2 810,807 0.8 Cell5 8.9 766,286 0.7 C1 a Cell 9 806,715 0.7 Cell 7 9 818,223 0.8 Cell 8 9.9 902,372 0.9 Celli 7.1 457,857 1.2 a� Cell 7.9 549,967 1.3 Cell 10 916,989 1.5 M C1 Cell 10 9.5 1,038,598 1.5 a Cell 11 10.5 840,385 1.6 Totals 101.1 8,748,987 11.9 NCDEO Comment #4 Section 5.2.4 — Leachate collection system maintenance. Please be more specific. At a minimum leachate lines shall be inspected by camera at the completion of construction and at least every five years. The section recommends more often. What schedule will the lines be cleaned? Experience shows that the first year contributes silt and fines to the system and should be jet flushed. The section recommends annual cleaning and visual inspection. GC5770\Sutton Const Permit Response to TR-Ol.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 4 Response # 4: NCDEQ's comment is duly noted. Section 5.2.4 of the Report will be updated to state "During operations (expected to be on the order of 12 years) the leachate collection system will be inspected by camera at the completion of construction and every five (5) years thereafter. Leachate lines will be cleaned using jet -flushing annually. Post -closure the inspection and cleaning frequency will be reduced to five (5) years, and then ceased once leachate generation falls below 20 gallons per acre per day." Section 2.3.1 of the Operations Plan has also been verified for consistency. A copy of the updated Report is provided herein as Attachment B and a copy of the updated Operations Plan, provided as Attachment C. NCDEQ Comment #5 The plans specify the minimum 6" leachate lines. It is important to ensure that there are no angles in the system that would hinder the movement of cleaning equipment or cameras. Do the plans include access to the leachate lines from both ends of the cells? Previous Duke Energy landfill projects specified a minimum of eight (8) inch leachate pipe for ease of inspection. Response #5 As shown on Sheets 8 and 28 of the Drawings, the Leachate Collection System (LCS) comprises clean-out pipes on both ends of the cell, providing two access points to the leachate lines. In response to the Department's request the 6 -inch diameter pipes will be replaced with 8 -inch diameter piping where indicated on the Drawings and in the Report. Note that calculations have not been updated as the use of an 8 -inch diameter pipe conservative compared to the 6 -inch dimeter pipe. A copy of the updated drawings is provided herein as Attachment D NCDEQ Comment #6 Appendix I — Ops Plan — 2.0 Chimney drains are referenced and in the design. Are any instructions or directions necessary for their proper installation, timing, use and maintenance? When will they be installed and what documentation will be put in the facility record regarding the appurtenance? Response #6 The Drawings have been updated to include a note and call out to add extension when approximately four feet of pipe remains. Chimney drains may be installed during initial stages of filling of each cell and is founded on the protective cover material. NCDEO Comment #7 Section 2.1.2 — Refers to only disposal of Duke generated on-site waste. Will any waste come from off site, or does Duke want to allow for that potential? Where is wastewater treatment GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 5 sludge coming from? Petroleum contaminated soils are not commonly disposed of in North Carolina landfills. Under certain circumstances they are used for alternate daily cover. Are large volumes anticipated? Be more specific as to what `plant related decommissioning materials" might be. Is it a correct assumption that the plant decommissioning process will screen for unacceptable levels of lead or asbestos in any construction and demolition debris sent to the landfill? Response #7 Duke does not intend to accept waste at Sutton from off-site; therefore, the Application does not request that this be allowed. Wastewater sludge is anticipated to be limited and resulting from on-site treatment plants processing wastewater from the basin closure processes. Relatively small volumes of petroleum contaminated soils (i.e., less than 100,000 cy) are believed to be present in the former tank footprint within the Lay of Land Area (LOLA). As such, Duke's intent is to allow these soils to be placed within the onsite CCR landfill as alternate daily cover material as the Department has suggested. Similarly, plant -related decommissioning materials are in reference to small structures located within LOLA, specifically, concrete pads and/or pipe segments located within LOLA. These materials are not expected to contain lead or asbestos; therefore, provisions for screening of unacceptable levels of lead or asbestos have not been referenced. NCDEQ Comment #8 Section 2.1.4 — Refers to picking of trash from any vacuum truck waste after it is ejected at the landfill working face. This is a voluntary activity and may be deleted as a requirement of the operations plan. In lieu, any trash would have to be covered with daily cover at the end of the working day. Response #8 Section 2.1.4 of the Operations Plan has been revised accordingly to omit reference to picking of trash from any vacuum truck waste after it is discarded at the landfill working face. However, if there is non -permitted waste material (i.e., plastic bottles, waste paper, etc.) in the vacuum waste it will be removed immediately. NCDEQ Comment #9 Section 2.1.7 — Landfill sequencing is included in the permit to construct. Changes to the sequencing will be a permit modification. GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 6 Response #9 NCDEQ's comment is duly noted. Landfill sequencing narrative (Section 2.1.7 of the Operations Plan) and the Drawings will be revised to remove sequencing from the Application. NCDEO Comment #10 Section 2.1.10.2 — Check the wording of the paragraph. One foot of interim cover is required for areas that will not have waste on them for 12 months or more. Response #10 Duke Energy has received a variance for the one foot minimum cover in areas with no additional placement for 12 months at other operational NC facilities. This variance was granted with the addition of Dust Control Plans and approved based on CCP material not posing a nuisance to odor, vectors, or fire. Soil is applied for dust and erosion control. Section 2.1.10.2 of the Operations Plan has been revised as follows: "A 12 -inch thick interim cover layer shall be placed on exterior slopes and areas where final grades have been reached and/or areas where waste placement will be inactive for 12 months or more. Interim cover will be seeded within 7 days in accordance with Erosion and Sediment Control requirements. Vegetation shall be removed and the interim cover soil shall be scarified or removed prior to placing overlying waste and/or final cover." NCDEO Comment #11 Dust Plan- does the plan envision a log for the recordation of off-site complaints and the investigation/mitigation outcomes? Does the site have a wind direction and speed instrument? Duke may want to consider adding this information to the inspection report along with the other meteorological observations. Response #11 The Dust Plan does not include a log for recording off-site complaints and the investigation/mitigation outcomes. However, note that Sutton has a site -wide Environmental Protection Agency (EPA) Dust Emissions 257-80 Plan and these items are addressed in that document. Therefore, additional provisions are not included in the specific Dust Plan for the onsite CCR landfill. NCDEO Comment #12 Section 6.2 — Rules require 12 " of intermediate cover over areas that will not have waste placed on them within 12 months or longer. GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 7 Response #12 Duke Energy has received a variance for the one foot minimum cover in areas with no additional placement for 12 months at other operational NC facilities. This variance was granted with the addition of Dust Control Plans and approved based on CCP material not posing a nuisance to odor, vectors, or fire. Soil is applied for dust and erosion control. Section 6.2 of the Report has been updated for consistency with Section 2.1.10.2 of the Operations Plan and reflect the requirements set forth in 15A NCAC 13B. 1626(2)(c). NCDEQ Comment #13 Section 6.3.5 — The text refers to an 18 inch diameter pipe within a 24 inch thick soil cover. Is that sufficient to protect the pipe from routine maintenance on the cap? Does the text refer to two feet on top of the pipe or just six inches? Response #13 As shown on Detail 33 in Sheet 35 of the Drawings, there is an 18 -in minimum cover on the 18 - in pipe. This is intended to provide sufficient protection during routine maintenance (e.g., mowing) on the final cover. NCDEQ Comment #14 The application proposes the use of tanker trucks to haul leachate from the leachate storage facility to the Cape Fear Public Utility Authority Waste Water Treatment Plant. Duke Energy must provide the Section copies of all agreements and permits regarding the transportation and the discharge of leachate prior to issuance of any permit to operate for the proposed facility Response #14 NCDEQ's comment is duly noted. Duke has submitted an application to the Cape Fear Public Utility Authority Waste Water Treatment Plan to obtain a permit to dispose of leachate from the Sutton Onsite CCR Landfill. Duke will provide NCDEQ copies of all agreements and permits once they are received. NCDEQ Comment #15 The application proposes five (5) feet of separation from the seasonal high ground water table in the landfill design. The 5 foot separation is allowable; however previous Duke Energy involved projects have specified 5.5 feet of separation. The Section requires an explanation regarding the change in the specification for this project GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 8 Response #15 Duke appreciates NCDEQ's concern; however the application achieves the 4 -ft groundwater separation required by NCDEQ as well as a 5 -ft separation that is the standard for Duke Facilities and is the minimum calculated post -settlement separation within the footprint (i.e., pre - settlement separation is greater than 5 ft). Duke understands that the structural fill facility at the Brickhaven Mines allows for a 5.5 -ft separation but this is not the Duke standard. As such, a 5 -ft minimum separation will be maintained for the Sutton Onsite CCR Landfill design. NCDEO Comment #16 The application does not include financial assurance (FA) cost estimates for the proposed facility. Closure and post closure cost estimates and calculations are required for the permit and establishment of the FA mechanism. Duke Energy must provide the required information for inclusion in the permitting documents for review and approval by the Section. Response #16 A copy of the closure and post -closure financial assurance cost estimates for the proposed Onsite CCR Landfill have been prepared and are provided as Attachment E to this response to TR -01. Duke Energy will submit completed Financial Test once the Division approves closure and post closure estimates. NCDEO Comment #17 The Section requests a copy of Duke Energy's contingency plan for spill prevention/emergency action for the transportation of coal ash off the Sutton property. Likewise, the Section requests notification from Duke Energy when coal ash begins to be moved off site, including mode of transportation and ultimate destination. Response #17 A contingency plan for spill prevention/emergency action for the transportation of coal ash off the Sutton property was prepared and submitted to NCDEQ on 12 November 2015. A copy of the Ash Transportation Information Plan is submitted herein as Attachment F for completeness. NCDEO Comment #18 Leachate collection and storage system - Including, but not limited to Section 5.3.2, Appendix F, G and R. The drawings and operation plans refer to down drains in the plan. The design of the leachate collection and storage system does not readily appear to account for any contribution to the water balance from these structures. Will the 6 inch pipes handle the flows contributed by the chimneys? Does the water balance change and how? GC5770\Sutton Const Permit Response to TR-Ol.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 9 Response #18 The down drains referred to in the drawings and operation plans are for post -closure surface water collection and are separated from the waste by the geocomposite and geomembrane components of the final cover system. The leachate collection system (LCS) for the proposed Onsite CCR Landfill has been designed to properly convey the peak leachate generation rates calculated and presented in Appendix F of the Report (refer to Response # 20 for additional information on appropriateness of calculations). As shown in Appendix F, the peak leachate generation rates occur under Case 1 of the calculations, representing initial conditions of operation in a cell after placement of a start-up lift and additional lifts of CCR for a total of 10 ft of waste. Case 1 also represents the maximum area allowed for leachate generation where all stormwater in contact with CCR is directed to the LCS (e.g., through infiltration or through geocomposite drainage layer along perimeter and interim berms). Additional calculations have been prepared to account for runoff captured via chimney drains, conveyed to the LCS and are presented herein as Attachment G. As shown in the calculation package presented in Attachment G, the contribution from runoff via chimney drains does not exceed the flow capacity of a 6 -inch diameter LCS pipe. However, as stated in the Response to Comment #5, the LCS will be constructed using an 8 -inch diameter LCS pipe. The calculations provided in Attachment G indicate that an 8 -inch diameter LCS pipe will also provide sufficient flow. NCDEO Comment #19 Appendix G, Leachate Generation Life Cycle Analysis, Section 3.4.2 Leachate Generation Scenarios, does not include the "empty cell" scenario required by North Carolina General Statute NCGS 130A -295.6(h)(2). Appendix G requires updating to include the required scenario. Response #19 North Carolina General Statute (NCGS) 130A -295.6(h)(2) states that "A leachate collection system shall be designed to return the head of the liner to 30 centimeters or less within 72 hours. The design shall be based on the precipitation that would fall on an empty cell of the sanitary landfill as a result of a 25 -year -24-hour storm event. The leachate collection system shall maintain a head of less than 30 centimeters at all times during leachate recirculation. The Department may require the operator to monitor the head of the liner to demonstrate that the head is being maintained in accordance with this subdivision and any applicable rules." Duke interprets the "empty cell" requirement described above as not being intended for standard leachate generation purposes; rather, for head -on -liner under a 25 -year -24-hour storm event in cells that are recirculating leachate which does not apply to the proposed Onsite CCR Landfill as leachate will not be recirculated. Therefore, Appendix G of the Report was not updated. GC5770\Sutton Const Permit Response to TR-Ol.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 10 NCDEQ Comment #20 Besides the open condition modeling, the conservative case of the HELP model assumes 10 feet of coal ash. As a result of the iterative nature of the model, it might be useful to consider a five foot layer followed by five one foot vertical percolation layers of waste. Duke has several operating coal combustion residual landfills. Is the projected leachate amount consistent with observations at the other fleet operations? Response #20 The initial condition after placement of a start-up lift and additional lifts of CCR for a total of 10 ft of waste, as described in Case 1 (Appendix F of the Report) is typical for leachate generation calculations. Additionally, due to the reduced cell size compared to other CCR facilities and the anticipated disposal rates, 10 ft of waste is expected to be placed in the cell within a 1 -month period. As such, a model assuming a 5 -ft thick layer followed by five 1 -ft vertical percolation layers of waste is considered overly conservative. The leachate generation rates calculated and presented in Appendix F of the Report and the Leachate Generation Life Cycle Calculations presented in Appendix G of the Report were used to compare calculated versus measured leachate generation rates at various Duke -owned coal combustion residual landfills. Specifically, leachate generation rates (gal/acre/day) versus elapsed time (years) were used to compare the projected leachate generation rate for Sutton with measured leachate data from other DPE facilities (i.e., Marshall Steam Station Landfill, Mayo CCP Monofil, Craig Road Ash Landfill, and Allen Steam Station Landfill). Of the facilities presented, the Allen Steam Station Landfill (Allen) is the one with closest configuration to Sutton with regards to cell size. The cell sizes for Marshall Steam Station Landfill (Marshall), Mayo CCP Monofil (Mayo), and Craig Road Ash Landfill (Belews) are approximately 3 times larger than Sutton and Allen; therefore, the total volume measured at these facilities is expected to be higher than the total volume at Sutton and Allen. As such, the measured leachate data was normalized as a function of cell size and the results are presented in the plot below. As shown in the plot below, the projected leachate generation rate for Sutton over a 6 -year period ranges between 900 and 5,500 gal/acre/day and is generally higher than that measured for Allen (i.e., 400 to 920 gal/acre/day), Marshall, Mayo, and Belews, which range between 300 and 1,600 gal/acre/day. For measured versus projected leachate generation rates, the projected average leachate generation rate is also higher (i.e., 6 -year average equal to 1,751 gal/acre/day for Sutton compared to actual 723 gal/acre/day for Allen and 1,130 gal/acre/day for Mayo). The modeled leachate generation rate calculated for Sutton is generally higher compared to observed values at these larger facilities. GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 11 6,000 5,000 7 4,000 W L u ■ C5 3,_000 0 0 0 2 3 4 5 6 Elapsed Time (Years) The above observations demonstrate that the calculated leachate volume for the proposed Onsite CCR Landfill at Sutton is consistent or more conservative when compared with leachate volumes measured at other Duke facilities. NCDEO Comment #21 The modeling is for one acre parcel sizes and then extrapolated to the potential site operation. To move the volume of ash that is projected in the plan could entail over 200 one way truck trips a day, or some other similar large number. Will the operator be able to control the working face tight enough to make it perform in a manner as it is conceptualized? (Note- this also raises the question as to whether the proposed 15' access road will be sufficient and safe). Response #21 The Operations Plan (Appendix I of the Report) states that "During landfill operations, the working face in the cell will be limited to as small an area as practical at the owner's discretion, with waste in other areas covered with appropriate material." Additionally, as shown in Appendix G of the Report, the infiltration area (i.e., area capable of generating leachate) for each cell is assumed to be the full size of the cell (top deck + side slope). The 1 -acre extrapolation is used to allow a uniform distribution of leachate generation over varying cell sizes, where the total leachate volume generation is calculated as the HELP model results multiplied by individual cell sizes. Additionally, intermediate cover is expected to be placed along the side slopes as final grades are reached to provide contact water/stormwater separation. Therefore, GC5770\Sutton Const Permit Response to TR-Ol.docx engineers I scientists I innovators • Marshall (measured - Wacre/day) • ♦Belews (measured - gal/acre/day) ■Alien (measured- gat/acre/day) • aMayo (measured - gal/acre/day) • *Sutton (calculated- gal/acre/day) ■ i • ! • i ■ • 1 * A 4M 0 2 3 4 5 6 Elapsed Time (Years) The above observations demonstrate that the calculated leachate volume for the proposed Onsite CCR Landfill at Sutton is consistent or more conservative when compared with leachate volumes measured at other Duke facilities. NCDEO Comment #21 The modeling is for one acre parcel sizes and then extrapolated to the potential site operation. To move the volume of ash that is projected in the plan could entail over 200 one way truck trips a day, or some other similar large number. Will the operator be able to control the working face tight enough to make it perform in a manner as it is conceptualized? (Note- this also raises the question as to whether the proposed 15' access road will be sufficient and safe). Response #21 The Operations Plan (Appendix I of the Report) states that "During landfill operations, the working face in the cell will be limited to as small an area as practical at the owner's discretion, with waste in other areas covered with appropriate material." Additionally, as shown in Appendix G of the Report, the infiltration area (i.e., area capable of generating leachate) for each cell is assumed to be the full size of the cell (top deck + side slope). The 1 -acre extrapolation is used to allow a uniform distribution of leachate generation over varying cell sizes, where the total leachate volume generation is calculated as the HELP model results multiplied by individual cell sizes. Additionally, intermediate cover is expected to be placed along the side slopes as final grades are reached to provide contact water/stormwater separation. Therefore, GC5770\Sutton Const Permit Response to TR-Ol.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 12 there are no limitations to the size of the working face specified as part of the proposed operations and/or calculations. Duke agrees that the projected CCR disposal rate is high; however, this assumption was made to meet the CCR basin closure schedule at Sutton and is subject to change. Note that ash transport into the landfill will be a combination of trucking and conveyor system to reduce the number of truck trips per day and facilitate landfill operations control by the operator. Please note that the 15 -ft access road shown in the Drawings is the post -closure access road; therefore, the width is appropriate for the intended use. The location of the operational haul roads is a function of operations and the anticipated CCR disposal rates with potential for a conveyor system to facilitate CCR transport from the basins to the landfill. As such, these operational haul roads are not presented in the Drawings. NCDEQ Comment #22 The section requests that Duke also include an emergency action plan for handling the leachate in the event of large rainfall, tropical storms or hurricanes. All our landfills on the east coast have them and they include provisions to draw down storage days ahead of a projected storm, go into the storm season with maximum dry storage, and also provisions for handling the leachate until the storm passes and the activity level can return to normal. Response #22 "Section 2.3.7 — Contingency Plan" within the Operations Plan has been updated to include a brief narrative for management, storage, and transport of leachate in the event of large rainfall from events such as , tropical storms or hurricanes until the activity levels return to normal. An Emergency Action Plan, which will include more details on the logistics and action levels, will be included in the operations permit application. NCDEQ Comment #23 The application proposes 255,254 gallons of leachate storage capacity in the landfill design. The design requirements and specifications are documented in the application. However previous Duke Energy projects and involved projects have specified 2 to 3 times the capacity included in this application. The Section requires an explanation regarding the change in the specification for this project. The plan calls for three days of storage in onsite tanks. Is this enough? What is the acceptance rate at the proposed receiving facility and can it be managed at a high enough level with trucks? What happens if the receiving plant encounters a disruption in service and can't take the leachate? GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 13 Response #23 As discussed in the response to comment #20, the leachate generation calculations are appropriate for the Sutton Onsite CCR Landfill design. The calculated leachate storage capacity (255,254 gal) is a direct result of the calculated leachate volumes for the proposed landfill and considered appropriate. However, the Leachate Generation Life Cycle analyses have been conservatively updated to include runoff contributions through the chimney drains and an increased 5 -day storage contingency. The updated Leachate Generation Life Cycle calculation package is provided herein as Attachment H. As shown in the updated Leachate Generation Life Cycle analyses, the peak 5 -day contingency volume requirement is equal to approximately 706,000 gal (for Phases 1 and 2). The storage requirements increase to approximately 931,170 gal should Phase 3 be built. To address the potential for additional leachate storage requirements under unexpected conditions (e.g., storms, hurricanes), a minimum 1,000,000 gal storage area will be provided. NCDEQ Comment #24 The drawing titled Leachate Storage Plan (Drawing No.: 10 of 38), the Section requires greater design detail, regarding: a. Traffic damage to "non -traffic bearing grate", b. The tank footers; their design with respect to traffic flow (the effect of their elevation on large vehicle maneuvering room) and the effects on the design with regards to hydrogeological aspects of the area. Response #24.a NCDEQ's comment is duly noted; the Drawing titled Leachate Storage Plan (Drawing No. 10 of 38) has been modified to reflect "traffic -bearing grate" as this was the original intent of the detail. However, as stated in Note 2 of Drawing No. 10 of 38, the "leachate storage plan is for representation purposes only and subject to change based on industry standards and commercially available products" and has not been fully designed pending storage tank determination and design. Response #24.b Similar to that stated in response to comment #24.a, design of the tank footers' is pending tank determination and will be prepared by the tank manufacturer. Duke will assure that traffic flow is taken into consideration as well as the effects on the design with regards to hydrogeological aspects of the area. GC5770\Sutton Const Permit Response to TR-Ol.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 14 NCDEO Comment #25 The drawing titled Leachate Sump Plan (Drawing No.: 28 of 38), the Section is concerned that drawing indicates a "PERFORATED LEAK DETECTION PIPE 4" O HDPE SDR 11 " connected to a "SOLID LEAK DETECTION CLEANOUT PIPE 6" O HDPE SDR 11 ", correct as required. Response #25 NCDEQ's comment is duly noted. The ` PERFORATED LEAK DETECTION PIPE 4" 0 HDPE SDR 11 " detail on Drawing 28 of 38 has been corrected accordingly to show "PERFORATED LEAK DETECTION PIPE 6 0 HDPE SDR I U' NCDEO Comment #26 In accordance with the EPA CCR Rule 257.94(b), eight independent samples for each background well must be collected and analyzed for constituents listed in Appendix III and IV of Part 257 during the first six months of sampling. There is no mention of this in the Water Quality Monitoring Plan. The Section requires an explanation regarding the exclusion of the requirement. Response #26 Duke would like to keep permitting requirements set forth in Rule 15A NCAC 13B .0504 and .1631 through .1637 separate from those set forth in EPA CCR Rule 257. As such, the Water Quality Monitoring Plan submitted as Appendix J of the Report is intended to comply with Rule 15A NCAC 13B .0504 and .1631 through .1637. However, Duke is developing separate plans to comply with CCR -related requirements in EPA CCR Rule 257. NCDEO Comment #27 There are several monitoring wells within the footprint of the proposed landfill. Explain the purpose of each well and if it's still being monitored and by whom. Response #27 The wells located within and adjacent to the proposed landfill footprint are currently used in support of ongoing CCR basin monitoring requirements and will be abandoned as part of the basin closure activities and during construction of the landfill. Note that, in compliance with EPA CCR Rule 257, additional wells will be installed for continued monitoring as needed outside of the landfill footprint. GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators Mr. Edward F. Mussler, III, P.E. 8 December 2015 Page 15 CLOSURE If you have any questions or require additional information, please do not hesitate to contact Mr. John Toepfer of Duke at (919) 546-7863 or at john.toepferkduke-energy coni. Attachments Attachment A Attachment B Attachment C Attachment D Attachment E Attachment F Attachment G Attachment H Copies to: Sincerely, •``•'t�1 N CAP10 SEAL - _ ® 284 *SeniorEngineer mascend„�� ,pIiu• 8�7 5 P.E. Number 042284 Maedi Othman, Ph.D., P.E. Principal Copy of Technical Review Updated Construction Application Updated Operations Plan Updated Permit Drawings Financial Assurance Ash Transport Contingency Plan Chimney Drain Calculations Leachate Life Cycle Generation GC5770\Sutton Const Permit Response to TR-01.docx engineers I scientists I innovators ATTACHMENT A COPY OF TECHNICAL REVIEW North Carolina Department of Environmental Quality Pat McCrory Governor Donald R. van der Vaart Secretary October 7, 2015 Mr. John Toepfer, Lead Engineer Duke Energy Mail Code NC 15 Raleigh, North Carolina 27601 Subject: Permit to Construct Application, Technical Review Duke Energy — Sutton Energy Complex, Landfill New Hanover County, DIN 24956 Dear Mr. Toepfer: On August 7, 2015 the Division of Waste Management, Solid Waste Section (Section) received Duke Energy's application for a permit to construct an industrial landfill at the Sutton Energy Complex, located in New Hanover County. The application was entitled: Onsite CCR Landfill Construction Application Report, L. V. Sutton Energy Complex, Sutton Steam Plan Road, Wilmington, North Carolina. Prepared for Duke Energy Progress, LLC. Prepared by Geosyntec Consultants. August 2015. DIN 24849. The Section has performed a technical review of the application and the following concerns are provided for your response; 1. The Section has been notified that the 401/404 wetlands permitting process has begun, however no applications have been received by the North Carolina Division of Water Resources (DWR). Duke Energy must keep the Section updated regularly on the wetlands permitting process. The decision on how to move forward in light of the issue has not been finally determined. Have demonstrations been made in accordance with the newly promulgated CCR rules? When an application is submitted to DWR and the U.S. Army Corps of Engineers, please copy the section on the submittal. 2. Section 3.4 — The Section has questions with the volume estimates for available onsite suitable soils. There is indication of a large soil imbalance for the construction and operation of the facility. The estimates provided in the application indicate a deficit of approximately 650,000 cubic yards of onsite suitable soils. What efforts are being made to identify suitable borrow sources? There is also concern that onsite storage areas may not be adequate for stored soils, Duke Energy should provide more detail on these areas and their storage capacity. 3. Section 3.3 — Include the landfill's proposed gross airspace capacity. Gross capacity is defined as the volume from the top of protective cover through the final cover. For permitting purposes this will also be needed for the cells/phases if they are incrementally constructed. 4. Section 5.2.4 — Leachate collection system maintenance. Please be more specific. At a minimum leachate lines shall be inspected by camera at the completion of construction and at least every five years. The section recommends more often. What schedule will the lines be cleaned? Experience shows that the first year contributes silt and fines to the system and should be jet flushed. The section recommends annual cleaning and visual inspection. 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone: 919-707-82001 Internet: http://portal.ncdenr.org/web/wm An Equal Opportunity 1 Affirmative Action Employer— Made in part by recycled paper Mr. John Toepfer Duke Energy PTC- Technical Review October 7, 2015 Page 2 of 4 5. The plans specify the minimum 6" leachate lines. It is important to ensure that there are no angles in the system that would hinder the movement of cleaning equipment or cameras. Do the plans include access to the leachate lines from both ends of the cells? Previous Duke Energy landfill projects specified a minimum of eight (8) inch leachate pipe for ease of inspection. 6. Appendix I — Ops Plan — 2.0 Chimney drains are referenced and in the design. Are any instructions or directions necessary for their proper installation, timing, use and maintenance? When will they be installed and what documentation will be put in the facility record regarding the appurtenance? 7. Section 2.1.2 — Refers to only disposal of Duke generated on-site waste. Will any waste come from off site, or does Duke want to allow for that potential? Where is wastewater treatment sludge coming from? Petroleum contaminated soils are not commonly disposed of in North Carolina landfills. Under certain circumstances they are used for alternate daily cover. Are large volumes anticipated? Be more specific as to what "plant related decommissioning materials" might be. Is it a correct assumption that the plant decommissioning process will screen for unacceptable levels of lead or asbestos in any construction and demolition debris sent to the landfill? 8. Section 2.1.4 — Refers to picking of trash from any vacuum truck waste after it is ejected at the landfill working face. This is a voluntary activity and may be deleted as a requirement of the operations plan. In lieu, any trash would have to be covered with daily cover at the end of the working day. 9. Section 2.1.7 — Landfill sequencing is included in the permit to construct. Changes to the sequencing will be a permit modification. 10. Section 2.1.10.2 — Check the wording of the paragraph. One foot of interim cover is required for areas that will not have waste on them for 12 months or more. 11. Dust Plan- does the plan envision a log for the recordation of offs -site complaints and the investigation/mitigation outcomes? Does the site have a wind direction and speed instrument? Duke may want to consider adding this information to the inspection report along with the other meteorological observations. 12. Section 6.2 — Rules require 12" of intermediate cover over areas that will not have waste placed on them within 12 months or longer. 13. Section 6.3.5 — The text refers to an 18 inch diameter pipe within a 24 inch thick soil cover. Is that sufficient to protect the pipe from routine maintenance on the cap? Does the text refer to two feet on top of the pipe or just six inches? 14. The application proposes the use of tanker trucks to haul leachate from the leachate storage facility to the Cape Fear Public Utility Authority Waste Water Treatment Plant. Duke Energy must provide the Section copies of all agreements and permits regarding the transportation and the discharge of leachate prior to issuance of any permit to operate for the proposed facility. Mr. John Toepfer Duke Energy PTC- Technical Review October 7, 2015 Page 3 of 4 15. The application proposes five (5) feet of separation from the seasonal high ground water table in the landfill design. The 5 foot separation is allowable; however previous Duke Energy involved projects have specified 5.5 feet of separation. The Section requires an explanation regarding the change in the specification for this project 16. The application does not include financial assurance (FA) cost estimates for the proposed facility. Closure and post closure cost estimates and calculations are required for the permit and establishment of the FA mechanism. Duke Energy must provide the required information for inclusion in the permitting documents for review and approval by the Section. 17. The Section requests a copy of Duke Energy's contingency plan for spill prevention/emergency action for the transportation of coal ash off the Sutton property. Likewise, the Section requests notification from Duke Energy when coal ash begins to be moved off site, including mode of transportation and ultimate destination. 18. Leachate collection and storage system- Including, but not limited to Section 5.3.2, Appendix F, G and R. The drawings and operation plans refer to down drains in the plan. The design of the leachate collection and storage system does not readily appear to account for any contribution to the water balance from these structures. Will the 6 inch pipes handle the flows contributed by the chimneys? Does the water balance change and how? 19. Appendix G, Leachate Generation Life Cycle Analysis, Section 3.4.2 Leachate Generation Scenarios, does not include the "empty cell" scenario required by North Carolina General Statute NCGS 130A -295.6(h)(2). Appendix G requires updating to include the required scenario. 20. Besides the open condition modeling, the conservative case of the help model assumes 10 feet of coal ash. As a result of the iterative nature of the model, it might be useful to consider a five foot layer followed by five one foot vertical percolation layers of waste. Duke has several operating coal combustion residual landfills. Is the projected leachate amount consistent with observations at the other fleet operations? 21. The modeling is for one acre parcel sizes and then extrapolated to the potential site operation. To move the volume of ash that is projected in the plan could entail over 200 one way truck trips a day, or some other similar large number. Will the operator be able to control the working face tight enough to make is perform in a manner as it is conceptualized? ( Note- this also raises the question as to whether the proposed 15' access road will be sufficient and safe) 22. The section requests that Duke also include an emergency action plan for handling the leachate in the event of large rainfall, tropical storms or hurricanes. All our landfills on the east coast have them and they include provisions to drawn down storage days ahead of a projected storm, go into the storm season with maximum dry storage, and also provisions for handling the leachate until the storm passes and the activity level can return to normal. Mr. John Toepfer Duke Energy PTC- Technical Review October 7, 2015 Page 4 of 4 23. The application proposes 255,254 gallons of leachate storage capacity in the landfill design. The design requirements and specifications are documented in the application. However previous Duke Energy projects and involved projects have specified 2 to 3 times the capacity included in this application. The Section requires an explanation regarding the change in the specification for this project. The plan calls for three days of storage in onsite tanks. Is this enough? What is the acceptance rate at the proposed receiving facility and can it be managed at a high enough level with trucks? What happens if the receiving plant encounters a disruption in service and can't take the leachate? 24. The drawing titled Leachate Storage Plan (Drawing No.: 10 of 38), the Section requires greater design detail, regarding; a. Traffic damage to "non -traffic bearing grate", b. The tank footers; their design with respect to traffic flow (the effect of their elevation on large vehicle maneuvering room) and the effects on the design with regards to hydrogeological aspects of the area. 25. The drawing titled Leachate Sump Plan (Drawing No.: 28 of 38), the Section is concerned that drawing indicates a "PERFORATED LEAK DETECTION PIPE 4" 0 HDPE SDR 11" connected to a "SOLID LEAK DETECTION CLEANOUT PIPE 6" O HDPE SDR 11", correct as required. 26. In accordance with the EPA CCR Rule 257.94(b), eight independent samples for each background well must be collected and analyzed for constituents listed in Appendix III and IV of Part 257 during the first six months of sampling. There is no mention of this in the Water Quality Monitoring Plan. The Section requires an explanation regarding the exclusion of the requirement. 27. There are several monitoring wells within the footprint of the proposed landfill. Explain the purpose of each well and if it's still being monitored and by whom. This letter in no way restricts the ability of the Section to request additional information or clarification. Should you have any questions regarding this matter contact Mr. Larry Frost at (828) 296-4704 larry.frost@ncdenr.gov or Mrs. Elizabeth Werner at (919) 707-8253 elizabeth.wemer@ncdenr.gov. Sincerely, Edward F. Mussler, III, P.E., Supervisor Permitting Branch, Solid Waste Section Division of Waste Management, NCDEQ ec: Victor Damasceno — Geosyntec Don Gibbs — Duke Energy Ellen Lorscheider — SWS/RCO Larry Frost — SWS/ARO Elizabeth Werner — SWS/RCO ATTACHMENT B UPDATED CONSTRUCTION APPLICATION Prepared for ('DUKE ENERGY PROGRESS Duke Energy Progress, LLC 526 South Church Street Charlotte, North Carolina 28202 ONSITE CCR LANDFILL CONSTRUCTION APPLICATION REPORT L.V. SUTTON ENERGY COMPLEX Sutton Steam Plant Road Wilmington, North Carolina Prepared by Geosyntec'�' consultants Geosyntec Consultants of NC, PC 1300 South Mint Street, Suite 410 Charlotte, North Carolina 28203 License No. C-3500 Project No. GC5770 December 2015 (Rev. 1) Victor M. Damasceno, Ph.D., P.E. North Carolina Registration No. 042284 Date: L. V. Sutton Plant, Onsite Landfill Construction Application Report EXECUTIVE SUMMARY Geosynte& consultants This Permit Application Report (Report) is for a permit to construct and operate an onsite coal combustion residuals (CCR) landfill disposal facility (landfill) at the L.V. Sutton Energy Complex (Sutton), located in Wilmington, North Carolina. The application is intended to support a construction and operation permit for development of the entire landfill (i.e., complete landfill footprint and associated structures). This permit application was prepared by Geosyntec Consultants of North Carolina, PC (Geosyntec) on behalf of Duke Energy Progress, Inc (Duke) in accordance with the North Carolina Department of Environment and Natural Resources (NCDENR) Solid Waste Management Rules, 15A North Carolina Administrative Code (NCAC) 13B — Solid Waste Management and Environmental Protection Agency (EPA) 40 CFR Parts 257 and 261, titled "Hazardous and Solid Waste Management System: Disposal of Coal Combustion Residuals from Electric Utilities: Final Rule" as published in the Federal Register at the time of this submittal. This Report provides information and calculations addressing applicable parts of NCDENR Rule 15A NCAC Subchapter 13B, Section 0500 and EPA 40 CFR Parts 257 and 261. Thirty eight sheets of permit drawings provide layout, phasing plan, post -closure design, and details for the proposed landfill. The permit drawings are based on the complete build -out of the disposal facility and are prepared to verify that all features of the project are addressed. This Report has been prepared to provide the information required as part of the Application and Engineering Report. The written documentation in this Report includes and/or references: • Engineering Report (Report); • Hydrogeological and Environmental Report (submitted as part of the Site Suitability Application, submitted to NCDENR in May 2015 and was complete in July 2015): o hydrogeologic investigation, and o design hydrogeologic report; • Environmental Control and Management o groundwater quality monitoring plan, o surface water evaluation report: o surface water management system design, o erosion and sediment control plan, and o surface water quality monitoring plan; • Civil Design and Application Drawings: o site drawing and topographical features/existing conditions, o base and final grading plans, GC5770/Sutton -Construction Application_TR-Ol.docx i December 2015 (Rev. l ) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants o cross sections/details/volumes, o erosion and sediment control plan, o surface water management system, o leachate management system, o phasing plans, and o post -closure plans; • Geotechnical Calculation Packages: o slope stability: local, global, liner -CCR block and veneer stability, and o settlement: foundation/waste; • Liner and Cover Design: o HELP model analysis, o liner filtration criteria, and o pipe structural stability; • Leachate Management System: o leachate generation rates, o leachate life cycle, and o leachate management system; • Landfill Closure and Post -closure Care Plan; • Operations Plan; • Technical Specifications; and • Construction Quality Assurance Plan. This Report also provides calculation packages in support of landfill stability, settlement, leachate management system design, final cover surface water management system design, erosion and sediment control, and final cover system performance. Landfill slope stability calculations show that the calculated factors of safety (FS) exceed the regulatory requirement of 1.5. Calculated settlements of the subsurface soils beneath the proposed landfill footprint indicate that the minimum leachate collection corridor pipe slopes will be greater than 0.3 percent and cell floor cross slopes, greater than 2 percent. The liner system proposed for the facility exceeds the minimum design standards for CCR landfills. The final cover system performance evaluation shows that the proposed final cover system is effective in preventing precipitation infiltration into landfill after closure. The information and analyses contained in this Report demonstrate that the proposed landfill design is protective of the environment and meets applicable requirements set forth in NCDENR Rule 15A NCAC 13B.0500 and EPA 40 CFR Parts 257 and 261. GC5770/Sutton - Construction Application_TR-Ol.docx ii December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfall Construction Application Report TABLE OF CONTENTS Geosynteccl Consultants 1 INTRODUCTION....................................................................................................................1 1.1 Terms of Reference.........................................................................................................1 1.2 Location...........................................................................................................................1 1.3 Site Description...............................................................................................................1 1.4 Purpose and Scope...........................................................................................................2 1.5 Organization of this Application.....................................................................................3 2 SOLID WASTE MANAGEMENT RULES REQUIREMENTS........................................4 3 FACILITY DESIGN................................................................................................................5 3.1 Facility Development......................................................................................................5 3.2 Waste Stream...................................................................................................................5 3.3 Landfill Capacity.............................................................................................................5 3.4 Borrow Soil Quantities....................................................................................................5 3.5 Containment and Environmental Control Systems.........................................................6 4.4.1 Overview ..................................... 4.4.2 Subsurface Soil Conditions......... 4.4.3 Geotechnical Material Properties 4.5 Landfill Stability Analyses .................... ....................................................................10 ....................................................................10 ....................................................................10 ....................................................................10 4.5.1 General................................................................................................................10 4.5.2 Waste Mass Stability...........................................................................................10 4.5.3 Foundation Stability and Bearing Capacity........................................................11 4.5.4 Liner -CCR Block Stability.................................................................................11 4.6 Landfill Subgrade Settlement Analyses........................................................................12 4.6.1 General................................................................................................................12 4.6.2 Geomembrane Liner Tensile Strains..................................................................12 4.6.3 Leachate Collection System Post -Settlement Grades.........................................12 GC5770/Sutton - Construction Application_TR-Ol.docx i December 2015 (Rev. 1) 3.5.1 Overview............................................................................................................... 6 3.5.2 Leachate Collection and Storage..........................................................................6 3.5.3 Final Cover System...............................................................................................6 3.5.4 Erosion and Sedimentation Control......................................................................7 3.5.5 Nuisance Control..................................................................................................7 3.6 Subgrade Separation Requirements.................................................................................7 4 FACILITY DESIGN ANALYSES.........................................................................................8 4.1 Regional Geology............................................................................................................8 4.2 Regional Hydrogeology..................................................................................................8 4.3 Site Evaluation................................................................................................................9 4.4 Subsurface Soil Conditions and Geotechnical Parameters............................................10 4.4.1 Overview ..................................... 4.4.2 Subsurface Soil Conditions......... 4.4.3 Geotechnical Material Properties 4.5 Landfill Stability Analyses .................... ....................................................................10 ....................................................................10 ....................................................................10 ....................................................................10 4.5.1 General................................................................................................................10 4.5.2 Waste Mass Stability...........................................................................................10 4.5.3 Foundation Stability and Bearing Capacity........................................................11 4.5.4 Liner -CCR Block Stability.................................................................................11 4.6 Landfill Subgrade Settlement Analyses........................................................................12 4.6.1 General................................................................................................................12 4.6.2 Geomembrane Liner Tensile Strains..................................................................12 4.6.3 Leachate Collection System Post -Settlement Grades.........................................12 GC5770/Sutton - Construction Application_TR-Ol.docx i December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report 1 ' ` 5 LEACHATE MANAGEMENT SYSTEM..........................................................................13 5.1 Overview.......................................................................................................................13 5. 1.1 Purpose and Scope..............................................................................................13 5.1.2 Organization........................................................................................................13 5.2 Description of the Liner and Leachate Collection Systems..........................................13 5.2.1 General Description............................................................................................13 5.2.2 Liner System.......................................................................................................14 5.2.3 Leachate Collection System................................................................................15 5.2.4 Leachate Collection System Maintenance..........................................................16 5.3 Leachate Generation Rates............................................................................................16 5.3.1 Overview.............................................................................................................16 5.3.2 Estimated Leachate Generation Rates................................................................17 5.4 Liner and Leachate Collection System Materials..........................................................18 5.4.1 Overview.............................................................................................................18 5.4.2 Protective Soil Layer...........................................................................................18 5.4.3 Geotextile Filter Layer........................................................................................18 5.4.4 Geocomposite Lateral Drainage Layer...............................................................19 5.4.4.1 Primary Drainage Layer...........................................................................19 5.4.4.2 Secondary Drainage Layer.......................................................................19 5.4.5 Primary and Secondary Liner Geomembranes...................................................19 5.4.6 Geosynthetic Clay Liner(GCL)..........................................................................20 5.5 Leachate Collection Pipe Design..................................................................................20 5.5.1 General................................................................................................................20 5.5.2 Pipe Flow Capacity Design.................................................................................20 5.5.3 Pipe Structural Stability......................................................................................20 5.5.4 Pipe Perforation Sizing.......................................................................................21 5.6 Leachate Removal and Transmission Systems.............................................................21 5.6.1 Overview.............................................................................................................21 5.6.2 Leachate Removal Pumps...................................................................................21 5.6.3 Leachate Transmission Pipeline.........................................................................22 5.6.4 Pumps and Piping...............................................................................................22 5.7 Leachate Storage and Transfer......................................................................................22 5.8 Leachate Sampling and Analysis..................................................................................23 6 LANDFILL CLOSURE AND POST -CLOSURE CARE..................................................24 6.1 Introduction...................................................................................................................24 6.2 Closure Schedule...........................................................................................................24 6.3 Final Cover System Design...........................................................................................25 GC5770/Sutton - Construction Application_TR-O1_docx ii December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants LIST OF TABLES Table 1. Solid Waste Management Rules Cross Reference for Construction Application LIST OF FIGURES Figure 1. Site Location Map Figure 2. USGS Seismic Hazard Map 2014 LIST OF DRAWINGS Drawing 1. Title Sheet Drawing 2. Topographic Map Drawing 3. Existing Conditions Plan Drawing 4. Site Characterization Plan GC5770/Sutton - Construction Application_TR-O1_docx iii December 2015 (Rev. 1) 6.3.1 Final Cover System Construction Procedure......................................................25 6.3.2 Final Cover System Stability..............................................................................26 6.3.3 Final Cover Settlement.......................................................................................26 6.3.4 Final Cover Drainage System.............................................................................26 6.3.5 Surface Water Drainage System.........................................................................27 6.3.6 Erosional Stability...............................................................................................27 6.4 Post -Closure Activities..................................................................................................27 6.4.1 Post Closure Land Use........................................................................................28 6.5 Financial Assurance......................................................................................................28 7 ENVIRONMENTAL CONTROL AND MANAGEMENT...............................................29 7.1 Overview.......................................................................................................................29 7.2 Groundwater Monitoring Plan.......................................................................................29 7.3 Surface Water Management Plan..................................................................................29 7.3.1 Surface water management system design.........................................................29 7.3.2 Erosion and sediment control plan......................................................................29 8 LANDFILL CONSTRUCTION AND OPERATION........................................................30 8.1 Operation Plan...............................................................................................................30 8.2 Technical Specifications................................................................................................30 8.3 Construction Quality Assurance plan............................................................................30 9 REFERENCES.......................................................................................................................31 LIST OF TABLES Table 1. Solid Waste Management Rules Cross Reference for Construction Application LIST OF FIGURES Figure 1. Site Location Map Figure 2. USGS Seismic Hazard Map 2014 LIST OF DRAWINGS Drawing 1. Title Sheet Drawing 2. Topographic Map Drawing 3. Existing Conditions Plan Drawing 4. Site Characterization Plan GC5770/Sutton - Construction Application_TR-O1_docx iii December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants Drawing 5. Site Development Plan Drawing 6. Top of Subgrade Grading Plan Drawing 7. Top of Liner Grading Plan Drawing 8. Top of Leachate Collection System Grading Plan Drawing 9. Final Cover System Grading Plan Drawing 10. Leachate Storage Plan Drawing 11. Phasing Plan 1 Drawing 12. Phasing Plan 2 Drawing 13. Phasing Plan 3 Drawing 14. Groundwater Monitoring Plan Drawing 15. Construction Sequencing Plan I Drawing 16. Construction Sequencing Plan II Drawing 17. Construction Sequencing Plan III Drawing 18. Surface Water Management Plan Drawing 19. North Storm Water Pond Plan and Details Drawing 20. South Storm Water Pond Plan and Details Drawing 21. Erosion and Sediment Control Phasing Plan 1 Drawing 22. Erosion and Sediment Control Phasing Plan 2 Drawing 23. Erosion and Sediment Control Phasing Plan 3 Drawing 24. Landfill Cross Sections Drawing 25. Perimeter Berm Cross Sections Drawing 26. Liner and Final Cover System Details I Drawing 27. Liner and Final Cover System Details II Drawing 28. Leachate Sump Plan Drawing 29. Secondary Sump Cross Sections Drawing 30. Primary Sump Cross Sections Drawing 31. Leachate Collection System Details I Drawing 32. Leachate Collection System Details II Drawing 33. Leachate Management System Schematic Design GC5770/Sutton - Construction Application_TR-Ol.docx iv December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants Drawing 34. Surface Water Management Details I Drawing 35. Surface Water Management Details II Drawing 36. Surface Water Management Details III Drawing 37. Erosion and Sediment Control Details I Drawing 38. Erosion and Sediment Control Details II LIST OF APPENDICES Appendix A Construction Permit Application Drawings Onsite CCR Disposal Facility Appendix B L.V. Sutton Energy Complex — Deed and Owner Information Appendix C Subsurface Stratigraphy and Material Properties Data Interpretation Package Appendix D Slope Stability Analyses Appendix E Subgrade Settlement Analysis Appendix F Leachate Collection System Analysis Appendix G Leachate Generation Life Cycle Analysis Appendix H Leachate Collection System Chimney Drain Flow Capacity Appendix I Leachate Pump and Transmission System Design Appendix J Closure and Post -Closure Cost Estimate Appendix K Operations Plan Appendix L Water Quality Monitoring Plan Appendix M Technical Specifications Appendix N Construction Quality Assurance (CQA) Plan Appendix O Final Cover Veneer Slope Stability Analysis Appendix P Final Cover System CCR Settlement Analysis Appendix Q Final Cover System Performance Evaluation Appendix R Final Cover Surface Water Management System Design Appendix S Erosion and Sediment Control Plan Appendix T Closure and Post Closure -Care Plan GC5770/Sutton -Construction Application _TR-0I.docx v December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 1 INTRODUCTION 1.1 Terms of Reference Geosynte& consultants Geosyntec Consultants of North Carolina PC (Geosyntec) has prepared this Permit Application Report (Report) for the Construction and Operation of an onsite CCR landfill disposal facility associated with the L.V. Sutton Energy Complex (Sutton) located in Wilmington, North Carolina. This permit application has been submitted to North Carolina Department of Environment and Natural Resources (NCDENR) on behalf of Duke Energy Progress, Inc (Duke) and has been prepared to comply with the applicable requirements of NCDENR Rules 15A North Carolina Administrative Code (NCAC) Subchapter 13B — Solid Waste Management, and the United States Environmental Protection Agency (EPA) 40 CFR Parts 257 and 261. This Report is intended to support a construction and operation permit for development of the proposed landfill and associated structures. The landfill development plan includes the construction of 11 disposal cells to be constructed in three phases. The final, build -out landfill footprint will encompass approximately 100 acres. Ancillary facilities will support the operation of the landfill and provide storm water management throughout the life of the facility. Permit drawings titled "Construction Permit Application Drawings — Onsite CCR Disposal Facility" are an integral part of this application. The permit drawing set comprises 38 drawings showing plans, sections, and details of the proposed landfill and ancillary features. The permit drawings are included as Appendix A of this permit application and are intended to provide sufficient detail for permit approval. Additional detail will be provided in construction drawings for the onsite CCR landfill and associated features after receipt of the permit pursued herein. This Report was prepared under the responsible charge of Dr. Victor M Damasceno, Ph.D., P.E. and reviewed by Dr. Majdi Othman, Ph.D., P.E., both of Geosyntec. Professional engineer certification of this permit application is provided on the cover sheet of this Report, on the cover page of each calculation package, and on each sheet of the permit drawings. 1.2 Location Sutton is located in an approximately 3,308 -acre property in New Hanover County, near Wilmington, North Carolina and is situated between the Cape Fear River to the West and the Northeast Cape Fear River to the east and is located approximately 1.9 miles south of the New Hanover County Municipal Solid Waste (MSW) Landfill. Figure 1 presents a site location map. 1.3 Site Description The Sutton plant is owned by Duke (see Appendix B for supporting documents) and formerly operated as a three -unit, 575 -megawatt coal-fired plant from 1954 until retirement in November 2013. Upon retirement of the coal-fired units, a new 625 -megawatt gas-fired combined -cycle unit began operating. The coal-fired units of the Sutton Plant are currently undergoing GC5770/Sutton - Construction Application_TR-Ol.docx 1 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants decommissioning and demolition. The Sutton property is classified within the I-2 (heavy industrial) District by the Zoning Ordinance, as defined by the County of New Hanover. CCR basins located at the Sutton Plant include: (i) the 1971 Basin; and (ii) the 1984 Basin. Each basin covers approximately 54 and 82 acres, respectively. The 1971 Basin was operated from 1971 to present and currently only receives storm water. The 1984 Basin was operated from 1984 to 2013. Both basins contain fly ash, bottom ash, boiler slag, storm water, ash sluice water, coal pile runoff, and low volume wastewater. Scrubbers were not installed at the Sutton Plant, as such; Flue Gas Desulphurization (FGD) residuals are not known to be maintained in the CCR basins. Other notable features at the site include: (i) the Lay of Land Area (LOLA), located to the south of the 1971 Basin; (ii) the Cooling Pond; and (iii) a Discharge Canal that conveys water from the plant to the Cooling Pond. 1.4 Purpose and Scope This Report has been prepared for the purpose of obtaining NCDENR approval to construct an onsite CCR landfill through a 10 -year permit. The proposed onsite CCR landfill will be operated in support of closure activities of the existing CCR basins and decommissioning activities at Sutton. The project includes the installation of a liner and leachate collection system for the landfill. The proposed landfill footprint is shown in Drawing 5 of the Permit Drawings (Appendix A). The Permit Drawings also indicate the sequence of disposal cells throughout the projected build -out period. It is estimated that the proposed 100 -acre landfill will provide approximately 8.3 million cubic yards (approximately 10 million tons — assuming a density of approximately 1.2 tons/cy) of disposal capacity over a period of approximately 12 years; however, construction of the cells is expected to be complete within 10 years. The maximum elevation of the proposed landfill will be approximately 112 ft North American Vertical Datum (NAVD88) with an average top -deck elevation equal to 108 ft NAVD88. This Report discusses the methodology and approach for the design, construction, operation, closure, and post -closure care of the onsite CCR landfill. The intent of this permit application is to address applicable parts of NCDENR, Division of Waste Management Solid Waste Rules, Laws, and Regulations. Specifically, and in addition to general requirements, this permit application provides the following: • Engineering Report; • Hydrogeological and Environmental Report; • Storm Water Management System Design; • Civil Design and Application Drawings; • Geotechnical Calculation Packages; • Liner and Cover Design; • Leachate Management System; GC5770/Sutton -Construction Application_TR-Ol.docx 2 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants • Landfill Closure and Post -Closure Care; • Operations Plan; • Technical Specifications; and • Construction Quality Assurance Plan. 1.5 Organization of this Application To address the requirements of NCDENR Division of Waste Management Rules 15A NCAC 13B, this permit application is organized as follows: • Section 1 — Introduction: This section provides the terms of reference, site description and discusses the scope and organization of the permit application. • Section 2 — Solid Waste Management Rules Requirement: This section presents regulatory requirements associated with this application. • Section 3 — Facility Design: This section presents an overview of structures associated with the construction of the landfill. • Section 4 — Facility Design Analyses: This section summarizes the hydrogeological and geotechnical investigation performed at the proposed landfill site, and reports the results of analyses for global foundation and liner -waste block slope stability, and subgrade settlement for the landfill. • Section 5 — Leachate Management System: This section describes the liner and leachate collection systems as well as the leachate removal and transmission systems, and reports the results of design analyses performed for the landfill. • Section 6 — Landfill Closure and Post -Closure Care: This section details the final cover system associated with the closure of the onsite CCR landfill. • Section 7 — Environmental Control and Management: This section describes the Water Quality Monitoring Plan which includes surface water and groundwater quality plans. • Section 8 — Landfill Construction and Operation: This section describes the Operation Plan with respect to daily operations, including contingency operations for the landfill facility and the technical specifications and quality assurance plan with respect to construction materials and construction practices established for the landfill. GC5770/Sutton -Construction Application _TR-0I.docx 3 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 2 SOLID WASTE MANAGEMENT RULES REQUIREMENTS The construction plan application requirements established in NCAC Subchapter 13B, Sections .0503, .0504, and .0505 Solid Waste Management Rules are presented in Table 1. Following each criterion, a brief description of the location where the information is contained is provided. Siting requirements established in Section .0503 of the Rules and site application requirements presented in Section .0504 of the Rules are presented in the Site Suitability Report prepared by Geosyntec, dated May 2015 and submitted to NCDENR on 6 May 2015. GC5770/Sutton -Construction Application _TR-0I.docx 4 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 3 FACILITY DESIGN 3.1 Facility Development GeoSynte& consultants The proposed onsite CCR landfill at Sutton will be developed in three phases with the first phase being located within the central portion of the landfill footprint. Phase 2 will progress from south to north and Phase 3, from north to south. The anticipated landfill subgrade for each phase is shown on Drawing 6 of the Permit Drawings (Appendix A). Intermediate grading plans depicting the landfill configuration at the completion of each landfill phase are provided on Drawing 11 to Drawing 17 of the Permit Drawings. Cross sections of the landfill showing existing conditions, the proposed landfill subgrade, and final closure grades are provided on Drawing 24 of the Permit Drawings. Following completion of filling activities and subsequent closure/post-closure care, additional land use of the facility is not planned at this time. 3.2 Waste Stream The proposed landfill at Sutton will be utilized for the disposal of on-site generated CCR. CCR will include fly ash, bottom ash, boiler slag, coal mill rejects, as well as demolition debris and potentially contaminated soils encountered during closure activities at Sutton. 3.3 Landfill Capacity Based on the landfill design grades presented in the permit drawings (Appendix A) and as shown in Drawing 5 of the permit drawings, the estimated disposal capacity (i.e., available airspace) of the proposed onsite CCR landfill at Sutton is approximately 8.73 million cubic yards, estimated based on three-dimensional (3D) design grades developed using Autodesk Autocad Civil 3DO (Civil 3D). The resulting operational life of the landfill is 12 years; however, all the cells will be constructed within 10 years of operation. The operational life is calculated based on the Sutton CCR basin excavation schedule associated with the CCR basin closure of approximately 1.25 million tons per year for the first 4 years of operation, followed by a disposal rate of approximately 0.5 million tons per year of debris generated during closure and decommissioning activities at Sutton. The design airspace utilization factor (AUF) is estimated to be 1.2 tons/cy. 3.4 Borrow Soil Quantities The volume computation utility of Civil3D was utilized to estimate the earthwork volumes associated with general excavation and filling for construction of the perimeter berms, access roads, based grades, and protective cover. The total estimated volume required for construction of these features is estimated to be 305,000 yd3. The volume of cover soil during landfill operation was assumed to be approximately 150,000 yd' (about 2 percent of the airspace volume determined in the capacity estimates). The soil volume for the landfill cap as designed in Civil 3D is approximately 345,000 yd3. GC5770/Sutton -Construction Application _TR-Ol.docx 5 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 3.5 Containment and Environmental Control Systems 3.5.1 Overview The liner system proposed for the onsite CCR landfill is a double -lined system which consists of, from top to bottom: • 2 -ft thick protective soil layer; • double -sided geocomposite lateral drainage layer (leachate collection); • 60 -mil thick HDPE textured geomembrane layer (primary liner); • double -sided geocomposite lateral drainage layer (leak detection); • 60 -mil thick HDPE textured geomembrane layer (secondary liner); • geosynthetic clay liner (GCL). The liner system will be underlain by an 12 -in thick low permeability (e.g., 10-5 cm/s) compacted soil layer. 3.5.2 Leachate Collection and Storage As part of the lining system, the leachate collection and removal system (LCRS) for each cell of the proposed landfill is designed to provide effective collection of leachate accumulating on the liner. The purpose of the LCRS, in combination with the primary liner, is to collect and convey leachate to the landfill sumps within each cell. The LCRS is also designed to minimize the head on the liner, thus minimizing potential leachate migration through the liner. The LCRS for each landfill cell consists of. (i) a double -sided geocomposite lateral drainage layer; (ii) a leachate collection corridor that consists of a 6 -inch diameter perforated HDPE leachate collection pipe embedded in drainage gravel wrapped with geotextile; and (iii) leachate sump area. As shown in the calculation package titled "Leachate Collection System Analysis" (Appendix F), the LCRS has been designed to limit the maximum head of leachate above the liner to a depth equal to or less than 12 inches. The collected leachate at the sump areas will be pumped through a leachate transmission line to the leachate storage area, from which leachate can be loaded into tanker trucks and hauled to the Cape Fear Public Utility Authority Waste Water treatment plant. The complete leachate management system is further discussed in Section 5 of this report. 3.5.3 Final Cover System The final cover system of the proposed landfill will be constructed after final waste elevations are achieved. The landfill will have side slopes graded at 3 horizontal to 1 vertical (3H:1V), and top slopes graded at 5 percent to maximize runoff and minimize erosion. Drainage swales will be constructed on the final cover system to collect and divert surface water run-off via downdrain pipes to a perimeter swale at the toe of the landfill, and then to the storm water GC5770/Sutton -Construction Application_TR-Ol.docx 6 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants management areas (i.e., storm water detention ponds). This will help minimize erosion at the surface of the final cover system. The maximum final design elevation of the landfill will be 112 ft NAVD88. The plans and details for the proposed final cover system are provided in the permit drawings (Appendix A). The proposed final cover system is further detailed in Section 6 of this report. 3.5.4 Erosion and Sedimentation Control An Erosion & Sedimentation Control (ESC) plan has been prepared and is submitted as Appendix S of this Report. During construction and subsequent landfill operations, surface water will be routed by berms and swales away from the landfilling operations into storm water ponds. Once each portion of the landfill has reached approved final grades and received the closure (final cover) system, surface water runoff will be directed to the same ponds as described above. Temporary erosion control measures, such as silt fences, fast germinating vegetation, rock check dams, etc. will be installed as necessary to reduce the amount of sedimentation and erosion. The ESC is further discussed in Section 7 of this report. 3.5.5 Nuisance Control During landfill operation, potential nuisances to the surrounding areas include dust, in addition to sedimentation (control measures were discussed in the previous section). Dust generated from landfill activities will be controlled as necessary through the application of water by truck or other approved dust control products, if necessary. Dust associated with vehicular traffic will be minimized through the use of aggregate road surfaces and regular spraying with water. Additional measures may include the removal of mud and dirt from the roads as necessary. 3.6 SubErade Separation Requirements Pursuant to NCAC Subchapter 13B and EPA 40 CFR, the proposed subgrade has been designed to maintain a minimum post -settlement separation equal to 5 feet from the seasonal high groundwater level. The seasonal high water table was defined as the maximum water elevation at each monitoring well location from the mean measured elevation plus two standard deviations, as detailed in the Hydrogeologic Report submitted as Volume II of the Site Suitability Report prepared by Geosyntec, dated May 2015. GC5770/Sutton -Construction Application _TR-0I.docx 7 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 4 FACILITY DESIGN ANALYSES 4.1 Regional Geology The proposed onsite CCR landfill is located within the Coastal Plain Physiographic Province of North Carolina. The Coastal Plain Physiographic Province is characterized by a southeastward thickening wedge of late Cretaceous to Holocene age sediments that overlie a Paleozoic age crystalline basement. These overlying sediments, which exceed a thickness of 1,515 feet in New Hanover County, generally thicken and gently dip southeastwards from the Fall Line towards the Atlantic Ocean. The depositional history of these sediments begins with continental fragmentation and rifting of the Pangea Super Continent in the early Mesozoic Era followed by the opening of the modern Atlantic Ocean in the late Mesozoic and Cenozoic Eras. Extensive tectonic forces during rifting and post -rifting lead to the formation of major rift -basins, which are areas of low elevation, and arches (uplifted geologic structures). Examples of these in the vicinity of the study region for the landfill project include the Albemarle embayment in southern Virginia and northern North Carolina and the Cape Fear Arch, located roughly parallel to the Cape Fear River and southwest of Sutton. The long and complex depositional history of the Coastal Plain sediments resulted in successive geologic and hydrogeologic stratigraphic units. A detailed geological description of the site is provided in the Hydrogeologic Report prepared by Geosyntec, dated May 2015, submitted as Volume II of the Site Suitability Report. 4.2 Regional Hydrogeology Successive deposition of permeable and impermeable sediments in this region has resulted in aquifers that are generally separated by confining units. The various regional geologic and hydrogeologic stratigraphic units are discussed below sequentially from shallow to deep formations. • Surficial Aquifer: The surficial aquifer is the uppermost unconfined hydrostratigraphic unit at the proposed landfill site and constitutes the water table, which generally follows the surface topography. This aquifer is composed of undifferentiated sands of late Tertiary age and Quaternary surficial deposits, typical of what was encountered at the proposed landfill site during site investigations. These surficial sediments are well drained and consist of terraced and barrier -beach deposits, sandy coquinas, fossil sand dunes and stream channel deposits. The sediments are typically characterized as light gray to light yellow sand and silts. Regionally, the Surficial aquifer varies in thickness between approximately 10 and 100 ft. • Castle Hayne Aquifer: Tertiary -age deposits that constitute the Castle Hayne confining unit generally separate the overlying Surficial Aquifer from the underlying Castle Hayne aquifer. However, isopach maps depicting the elevation of the top of the Castle Hayne confining unit and aquifer indicate that the Castle Hayne formation is absent underneath GC5770/Sutton -Construction Application _TR-0I.docx 8 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report Geosynte& consultants the proposed landfill site. This interpretation is also consistent with observations from site investigations. • Peedee Aquifer: The Cretaceous age Peedee Formation directly underlies the surficial deposits in the local area. The Peedee Formation consists of the Peedee Confining Unit, the Upper Peedee Aquifer and the Peedee Aquifer. The Peedee confining unit, which generally consists of black clay mixed with some silt, is discontinuous across the proposed landfill site and generally dips and increases in thickness towards the southeast with thickness varying between 0 ft and 50 ft. Directly underlying the Surficial Aquifer or Peedee Confining Unit is the Upper Peedee Aquifer which is comprised of fine to medium grained sand. The Peedee Aquifer underlays the Upper Peedee Aquifer and typically consists of unconsolidated green to dark -gray silt, olive-green to gray sand, with trace quantities of glauconite, phosphorite, and pyrite. In southeastern Brunswick and north central New Hanover Counties, the Peedee Formation may also consist of unconsolidated calcareous sandstone and impure limestone. The top of the Peedee aquifer in this region is at an approximate elevation of -10 ft to -20 ft (NAVD88) and gently dips towards the southeast, varying in thickness from 200 to 300 ft in this part of New Hanover County. • Black Creek Confining Unit: The Black Creek confining unit underlies the entire proposed landfill site and is laterally continuous throughout the region. This unit typically consists of sandy clay, silty clay, and clay beds of the upper Black Creek Formation. The Black Creek confining unit dips to the southeast ranging in thickness from approximately 50 to 100 ft in the vicinity of the proposed landfill site. A detailed description of the site's hydrogeology is provided in the Hydrogeologic Report prepared by Geosyntec, dated May 2015, submitted as Volume II of the Site Suitability Report. 4.3 Site Evaluation The site has been evaluated with respect to fault areas, seismic impact zones, and unstable areas. Based on the findings presented in the Hydrogeologic Report (Volume II of the Site Suitability Application dated May 2015), there are no faults within 200 feet of the proposed landfill. In addition, the proposed facility is located with peak ground acceleration (PGA) ranging from 0.06 to 0.08, calculated based on probabilistic ground motions with a 2 percent probability of exceedance in 50 years and spectral accelerations calculated for 5 percent damped linear elastic oscillators [USGS, 2014]. Therefore, the proposed facility is not considered to be in a seismic impact zone. All ground motions are calculated for site conditions with Vs30=760 m/s, corresponding to NEHRP B/C site class boundary, as demonstrated in United States Geological Survey seismic hazard maps (Figure 2). Unstable areas are characterized by poor foundation conditions, areas susceptible to mass movements, and karst terrains (e.g., sinkholes). The proposed facility is not located in an GC5770/Sutton -Construction Application _TR-Ol.docx 9 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants unstable area, as documented in the Hydrogeologic Report. The site is underlain by competent soils primarily consisting of medium dense sands. 4.4 Subsurface Soil Conditions and Geotechnical Parameters 4.4.1 Overview The subsurface soil conditions across the site including the estimation of geotechnical material properties is provided in the Hydrogeologic Report and the Subsurface Stratigraphy and Material Properties Data Interpretation Package (Appendix Q. The established geotechnical properties provide the basis for the geotechnical engineering design associated with the proposed landfill facility. 4.4.2 Subsurface Soil Conditions The subsurface stratigraphy at the site was categorized into the lithologic units (from top to bottom), described below: • Surficial Aquifer • Discontinuous Peedee Confining Unit • Peedee Aquifer • Black Creek Confining Unit The seasonal high water table, based on measured groundwater levels and a soil morphological investigation, was estimated to range between elevation 11 ft and 12 ft NAVD88. 4.4.3 Geotechnical Material Properties Geotechnical material properties for subsurface soils as well as structural components associated with the landfill design are presented in the Data Package for Subsurface Stratigraphy and Material Properties (Appendix Q. 4.5 Landfill Stability Analyses 4.5.1 General Results of the stability analyses for the landfill are presented below. As discussed below, the landfill stability analyses include: (i) local waste mass stability; (ii) foundation slope stability or bearing capacity; and (ii) liner -waste block stability. 4.5.2 Waste Mass Stability Waste mass stability analyses were conducted as part of the design of the onsite CCR landfill to demonstrate adequate stability. The detailed waste mass stability analyses are included in the calculation package titled "Slope Stability Analyses" included as Appendix D to this Permit Application. GC5770/Sutton -Construction Application _TR-0I.docx 10 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants Based on the proposed landfill configuration (i.e., 311: IV) side slopes and the assumed waste material properties, the minimum calculated factor of safety (FS) for waste mass stability is greater than the minimum regulatory requirement of 1.5 for long-term stability. The results of the waste mass slope stability analyses indicate that the landfill waste slopes will be stable during the life of the landfill. The calculated waste mass slope stability FS exceeded the minimum FS requirements of 1.5. 4.5.3 Foundation Stability and Bearing Capacity Foundation stability analyses were conducted as part of the design of the landfill to demonstrate adequate stability. A minimum FS requirement of 1.5 was utilized for post -closure (long-term) foundation slope stability. The detailed slope stability analyses are presented in the calculation package titled "Slope Stability Analyses" included as Appendix D to this permit application. Foundation stability analyses were performed for representative cross sections that reflect critical landfill slope configurations with respect to the elevation of the maximum waste grades for the proposed landfill. The results of the foundation slope stability analyses indicate that the subsurface soils beneath the proposed landfill footprint provide adequate foundation support. The calculated foundation slope stability FS values for long-term foundation slope stability under maximum waste grade conditions exceeded the minimum FS requirement of 1.5. 4.5.4 Liner -CCR Block Stability Liner -CCR block stability analyses were conducted as part of the design of the proposed onsite CCR landfill to demonstrate adequate stability. Since the assumed failure surface is expected to occur along a defined path (i.e., within the liner system), sliding block failure mode was used to for the liner -CCR block stability analysis.. The detailed liner -waste block slope stability analyses are presented in Appendix D. A parametric or sensitivity analysis was performed for each landfill configuration analyzed to establish the minimum liner system interface friction angle (6) such that the calculated liner - waste block slope stability FS is equal to or greater than the minimum requirement for slope stability as described above (i.e., FS > 1.5). The sensitivity analysis was performed by calculating the liner -waste block slope stability FS for various values of interface friction angle. The minimum interface friction angles required to achieve a factor of safety of 1.5 for long-term conditions are presented in Appendix D. It is noted that these required interface friction angles are within the range of (or less than) typical soil-geosynthetic and geosynthetic-geosynthetic interface friction angles reported in the literature. Prior to construction, the interface friction angles between the actual soil and geosynthetic materials will be verified by performing site- specific interface shear strength testing. GC5770/Sutton -Construction Application _TR-Ol.docx 11 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 4.6 Landfill Subgrade Settlement Analyses 4.6.1 General Total and differential landfill subgrade (foundation) settlements have been evaluated as part of this application. As discussed below, the results of the settlement analyses were used to evaluate the impact of anticipated settlements on the performance of the proposed liner and leachate collection systems. The total subgrade settlements were calculated using conventional elastic deformation and consolidation theories for coarse-grained (sandy) and fine-grained (clayey) soils, respectively. Settlement analyses were performed for all landfill cells. Detailed subgrade settlement calculations are presented in the calculation package titled "Subgrade Settlement Analyses" attached as Appendix E to this permit application. 4.6.2 Geomembrane Liner Tensile Strains Tensile strains within the geomembrane layer resulting from differential settlement were evaluated to ensure liner system integrity. The geomembrane tensile strain was limited to 5 percent. As presented in the calculations provided in Appendix E, the calculated tensile strains within the geomembrane layer of the liner system were less than the allowable tensile strain of 5%. Therefore, the geomembrane layer will maintain its structural integrity under post- settlement (i.e., long-term) conditions. 4.6.3 Leachate Collection System Post -Settlement Grades Post -settlement grades were calculated between selected points along the landfill cell floor cross slopes and along the leachate collection corridor within a given landfill cell. The post -settlement grades were assessed to ensure positive drainage (i.e., drainage towards the leachate collection sump within each landfill cell). As presented in the calculations provided in Appendix E under post -settlement conditions, the calculated landfill cell floor cross slopes and leachate collection corridor slopes were greater than the minimum required slopes of 0.3% and 2%, respectively. Therefore, a minimum post -settlement slope of 2% was utilized for evaluation of the cell floor cross slopes and a minimum post -settlement slope of 0.3% was utilized for evaluation of the leachate collection corridor. Based on the analyses presented herein, the leachate collection system including the leachate collection corridor pipes will adequately convey leachate to the landfill cell sumps and experience no grade reversals. GC5770/Sutton -Construction Application _TR-Ol.docx 12 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 5 LEACHATE MANAGEMENT SYSTEM 5.1 Overview 5.1.1 Purpose and Scope This section describes the leachate management system for the proposed onsite CCR landfill at Sutton, including liner and leachate collection system, leachate transmission system, and leachate storage. This section also describes the collection and conveyance of the leachate from the landfill, as well as maintenance and operation of the leachate management facilities. The permit drawings included in Appendix A of this permit application provide plans and details of the leachate management system for the onsite CCR landfill. 5.1.2 Organization The remainder of this section is organized to: • provide a description of the liner and leachate collection system; • summarize the leachate generation rate analysis; • discuss the design of the liner and leachate collection system; • discuss the leachate collection pipe design; • discuss the design of the leachate removal, transfer and storage systems; and • present the leachate sampling and analysis program for the facility. 5.2 Description of the Liner and Leachate Collection Systems 5.2.1 General Description The proposed landfill is comprised of 11 cells with a footprint of approximately 100 acres in total plan area. The landfill will be lined with a double -lined system, and then capped with a geomembrane as a part of the final closure system. As shown by the descriptions and calculations provided in this section, the liner system proposed for the facility exceeds the minimum design standards for CCR landfills. In each cell, the liner system is sloped toward a low point (sump) located in the centerline of the cell along the perimeter of the landfill. The post -settlement elevation of the liner subgrade in the 11 cells is designed to be greater than or equal to 5 ft above the seasonal high ground water table in accordance with EPA 40 CFR Parts 257 and 261. Based on the results of the settlement analyses presented in Section 4.6, the post settlement grade is expected to be greater than 2 percent sloping toward the leachate collection system piping. The liner system will be placed over the prepared subgrade to intercept leachate percolating downward through the landfill. The primary drainage layer of the liner system (i.e., double -sided GC5770/Sutton -Construction Application _TR-0I.docx 13 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants geocomposite layer) will collect and remove leachate that is intercepted. Leachate from the primary drainage layer enters a perforated high density polyethylene (HDPE) pipe located along the leachate collection corridor at the center of the cells. The purpose of this pipe is to collect leachate from the drainage layer and convey it to the leachate collection sumps. The leachate collection pipe will be embedded in drainage gravel and will have a minimum post -settlement slope of 0.3 percent toward the sump area in each cell. The primary drainage layer has been designed to yield a maximum 1 -foot head on top of the liner. A secondary drainage layer is installed between the primary and secondary liners. The intent of the secondary drainage layer is to collect any leachate that may possibly leak past the primary liner through manufacturing or installation defects. The secondary drainage layer is designed to limit the head on the secondary liner to less than the thickness of the drainage layer, which is a geocomposite. The sump area is divided into two hydraulically isolated areas, primary and secondary, separated by the primary composite liner. The primary sump area receives the leachate that is collected in the primary leachate collection system. The secondary sump area collects any leachate that may leak through the primary liner and is collected by the secondary drainage layer (i.e., leak detection system). Each sump area is equipped with a primary and secondary sump riser. Each sump riser has a dedicated level -controlled submersible leachate pump to remove collected leachate from the sump. Collected leachate is pumped from the sump into the leachate transmission line where it is conveyed to an on-site leachate storage facility. From the on-site storage containers, leachate will be transported by truck to the Cape Fear Public Utility Authority Wastewater Treatment Plant, located in Wilmington, NC. 5.2.2 Liner System The liner system consists of a double -lined system, as follows: • 2 -foot thick liner protective layer; • primary geocomposite drainage layer; • 60 -mil thick primary HDPE textured geomembrane; • secondary geocomposite drainage layer; • 60 -mil thick HDPE secondary textured geomembrane; and • geosynthetic clay liner (GCL). The liner system will be underlain by an 12 -in thick low permeability (e.g., 10-5 cm/s) compacted soil layer. GC5770/Sutton -Construction Application _TR-Ol.docx 14 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 5.2.3 Leachate Collection System Geosynte& consultants Each leachate sump pump will be attached to a flex hose riser pipe. The riser pipes will be equipped at the top with a quick release mechanism to provide easy access to the pumps for maintenance purposes. At the top of the sump riser, the pipe leading from each sump pump will be fitted with an isolation valve for maintenance and a check valve to prevent the backflow of leachate from other pumps. The primary and secondary sides of the header will be equipped with separate flow totalizers to record the quantity of leachate being pumped from the cell. A mechanical flow diagram detailing the piping configuration is included in the Permit Drawings (Appendix A) and system details discussed next. Each cell will be equipped with two sump pumps at all times and a third, backup leachate collection sump pump. One sump pump will be dedicated to handling the primary leachate sump and the second pump will handle secondary leachate sump. The backup sump pump may be installed to facilitate handling leachate during maintenance of the primary leachate sump pump. Each cell will have a motor control station to control the operation of the sump pumps. These motor control stations will communicate with the main control panel. Sump pumps will be controlled by level transducers located in the sump risers. The primary sumps will be equipped with level transducers with multiple set points at different elevations within the sump. Under normal operation, only the lower set point will be activated. This will send a signal to the motor control station to start one of the primary sump pumps. The motor control station will operate the primary sump pumps so that both are used in an alternating fashion. The sumps will be equipped with low-level switches that will stop the pump when the sump has been evacuated. During periods of high leachate generation, one pump may not be sufficient to keep up with the inflow of leachate. In that event, the higher set point will be activated. This will notify the motor control station to start the backup primary leachate pump. The primary sump risers are hydraulically connected so that both sumps will maintain the same leachate level during pumping. The primary leachate pumps were sized to handle the maximum leachate flow rate evaluated for the early operation periods. Pump sizing was based on the largest cell in the landfill and all pumps are identically sized for interchangeability. Pump sizes may be modified during the operational life of the landfill based on operational experience. A third set point will also be used in the sumps. This set point will activate an alarm to notify the operator in the event leachate levels in the sump reach this elevation. The intent of this alarm is to notify the operator of potential problems with pumps or piping. The secondary sump will also be equipped with a level transducer. The first set point will start the secondary pump motor in the event leachate is detected in the secondary sump. The second set point is an alarm switch similar to the alarm switch in the primary sump. GC5770/Sutton -Construction Application _TR-0I.docx 15 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants Flow totalizers will be installed on the leachate collection headers at each cell. These totalizers will provide measurements of leachate volumes pumped from the leachate sumps. Separate totalizers will be installed for the primary and secondary sides of the system to monitor the quantity of leachate pumped. The volumes of leachate pumped from each cell will be recorded. Additionally, the monthly leachate production rate will also be recorded as a percentage of the monthly precipitation. Leachate collected in the sumps will be pumped out using submersible leachate pumps. The pumps will be connected to a 6 -inch diameter HDPE header pipe located at the top of the sump riser. Each cell will have a dedicated header pipe. The header pipe will convey leachate pumped from both the primary and secondary sumps to the main leachate transmission pipeline. The leachate transmission pipeline will then convey leachate pumped from all of the sumps around the landfill to the leachate storage containers. The leachate transmission line will be an 8 -in diameter dual -contained HDPE pipe. A vacuum air release valve will be installed on the header pipe near the first primary sump riser on each cell. The vacuum air release valve is intended to release any air that may enter into the pipeline (and thereby reducing the flow capacity of the pipeline) and to prevent siphoning from the leachate storage area into the leachate sumps. Design calculations for the piping system are included in the calculation packages entitled "Leachate Collection System Analysis" attached as Appendix F and "Leachate Pump and Transmission System Design," attached as Appendix I. 5.2.4 Leachate Collection System Maintenance The LCRS includes 68 -inch diameter perforated leachate collection pipes and cleanouts. The collection pipes will be cleaned and maintained, as necessary, through the side slope cleanout pipes. The leachate collection pipe cleanouts can be accessed at the top of the perimeter berms as shown in the permit drawings. Leachate collection pipes can be cleaned by flushing with high-pressure water from a hose or by snaking in the case of severe blockages. During operations (expected to be on the order of 12 years) the leachate collection system will be inspected by camera at the completion of construction and every five (5) years thereafter. Leachate lines will be cleaned using jet -flushing annually. Post -closure the inspection and cleaning frequency will be reduced to five (5) years, and then ceased once leachate generation falls below 20al�per acre per day. 5.3 Leachate Generation Rates 5.3.1 Overview Leachate generation rates utilized for the design of the proposed liner and leachate collection system were estimated using an analytical model. Modeling of leachate production was GC5770/Sutton -Construction Application _TR-0I.docx 16 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report Geosynte& consultants conducted using the Hydrologic Evaluation of Landfill Performance (HELP) model, Version 3.07, developed for the U.S. Environmental Protection Agency. The HELP model is a water balance calculator commonly used to estimate leachate production rates for landfills. A detailed description of the analyses and subsequent validations is included in the calculation package titled "Leachate Collection System Analysis" submitted as Appendix F and "Leachate Generation and Life Cycle Analysis" submitted as Appendix G to this permit application. 5.3.2 Estimated Leachate Generation Rates The HELP model was used to calculate leachate generation rates for nine basic cases, each representative of a different waste filling stage within a given cell of the landfill. A brief description of the nine basic cases is provided as follows: • Case 1 This scenario represents initial conditions of operation in a cell after the placement of a start-up lift and additional lifts of waste for a total of 10 ft of waste. No runoff and no surface vegetation was assumed for this case. • Case 2 This scenario represents ongoing landfilling operation with 25 ft of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). • Case 3 This scenario represents ongoing landfilling operation with 50 ft of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). • Case 4 This scenario represents intermediate conditions of operation with 50 ft of waste under intermediate cover. For this case, poor ground surface vegetation coverage was assumed. • Case 5 This scenario represents ongoing landfilling operation with 70 ft of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). • Case 6 This scenario represents intermediate conditions of operation with 70 ft of waste under intermediate cover. For this case, poor ground surface vegetation coverage was assumed. • Case 7 This scenario represents the maximum waste thickness of 90 ft, of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). • Case 8 This scenario represents the maximum waste thickness of 90 ft, under intermediate cover, before construction of the final cover. For this case, runoff from the intermediate cover surfaces was allowed and poor surface vegetation was assumed. • Case 9 This scenario represents post -closure conditions with 90 ft of waste and the final cover installed. This case represents the lowest potential for leachate generation, leakage, and head in the leachate collection systems as the final cover system over the waste minimizes percolation of rainfall through the waste. For this case, fair stand of grass coverage was assumed for surface vegetation. GC5770/Sutton -Construction Application _TR-Ol.docx 17 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants The temperature, wind and humidity (i.e. evapotranspiration data) and precipitation data used in the HELP model were obtained from the North Carolina Climate Retrieval and Observations Network Of the Southeast Database (NC CRONOS) website [State Climate Office of North Carolina, 2015] and was based on true observations made from April 2011 to April 2015 at the Wilmington International Airport weather station (Station ID 319457). The weather station is located approximately 5 miles southeast of the proposed landfill location. The solar radiation was synthetically generated using Charleston, South Carolina as the nearby city, since the NC Cronos website does not include the solar radiation data. A summary of the results from the HELP model for these cases is included in the calculation package titled "Leachate Collection System Analysis" submitted as Appendix F and "Leachate Generation and Life Cycle Analysis" submitted as Appendix G to this permit application. The maximum leachate production rate occurs under Case 1 (i.e., initial waste filling conditions with 10 ft of waste), which is the worst-case scenario. A calculation package entitled "Leachate Collection System Chimney Drain Flow Capacity::_(Appendix H) was also prepared to evaluate flows resulting from runoff collected via chimney drains and conveyed to the LCRS. The results of the HELP model predictions were used to design and evaluate the performance of the various components of the LCRS, specifically: (i) the proposed leachate collection system lateral drainage layer (i.e., drainage geocomposite); (ii) the maximum hydraulic head of leachate above the geomembrane liner (i.e., head -on -liner); and (iii) the flow capacity of the leachate collection piping system within landfill area. Detailed descriptions of these evaluations are also included in the calculation package titled "Leachate Collection System Analysis" (Appendix F). 5.4 Liner and Leachate Collection System Materials 5.4.1 Overview A comprehensive description of the liner and leachate collection system materials for the proposed CCR landfill is provided in the Technical Specifications (Appendix M). A description of the key components of the liner and leachate collection system is provided below. 5.4.2 Protective Soil Layer The liner protective soil layer is a 2 -ft thick layer of soil having the physical and performance properties as specified in Section 3105 13 of the Technical Specifications (Appendix M). 5.4.3 Geotextile Filter Layer Separate geotextile filter layers are used primarily in the leachate collection sump areas to provide a separation between the protective soil layer and sump gravel or the gravel installed around the leachate collection pipe. The specified geotextile filter is a needle punched non- woven material having physical and performance properties as specified in Section 31 02 19.13 of the Technical Specifications (Appendix M). GC5770/Sutton -Construction Application _TR-0I.docx 18 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 5.4.4 Geocomposite Lateral Drainage Layer 5.4.4.1 Primary Drainage Layer The material specified for the primary drainage layer consists of a geocomposite material with a two- or more strand polyethylene geonet core and needle punched non -woven geotextile heat laminated to each side. The geonet core is to be manufactured of high density polyethylene (HDPE) and is, therefore, chemically resistant to landfill leachate. The primary geocomposite was designed to meet specific requirements for hydraulic transmissivity under a specific hydraulic gradient and overburden stress. A geocomposite will be used having physical and performance properties as specified in Section 31 05 19.26 of the Technical Specifications (Appendix M). The parameters specified are designed to limit the accumulated head on the liner to be less than 1 foot. Design calculations to support the selection of the specified geocomposite properties are presented in the calculation package titled "Leachate Collection System Analysis" (Appendix F). The specifications require appropriate laboratory testing to confirm that the selected geocomposite has the specified properties. This testing includes hydraulic transmissivity tests conducted at the design overburden stress and gradient and using the appropriate boundary conditions. (i.e. the geocomposite is tested with the adjacent materials corresponding to those used in the field). Testing the geocomposite at the design overburden stress not only provides appropriate hydraulic properties, it also confirms that the geonet has sufficient compressive strength to prevent collapse. 5.4.4.2 Secondary Drainage Layer The basic physical requirements for the secondary drainage layer are the same as those for the primary drainage layer with the exception of the required transmissivity. Because the quantity of leachate expected to be carried by the secondary drainage layer is significantly less than that carried by the primary drainage layer, a lower transmissivity value is allowed for the secondary drainage layer. Design calculations to support the selection of the specified transmissivity are presented in Appendix F. A secondary drainage layer having the physical and performance properties as specified in Section 3105 19.26 of the Technical Specifications (Appendix M) will be used. Testing requirements for the secondary geocomposite are the same as for the primary geocomposite 5.4.5 Primary and Secondary Liner Geomembranes The specified geomembrane liner is a 60 -mil thick HDPE geomembrane with the appropriate physical, chemical, and mechanical properties to be resistant to leachate. Geomembranes used in containment facilities such as landfills are subjected to tensile stresses resulting from a variety of causes including: gravity stresses, settlement, thermal contraction, etc. Geomembranes must therefore have adequate tensile behavior. Several aspects of tensile behavior should be GC5770/Sutton -Construction Application_TR-Ol.docx 19 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants considered, including tensile strength and elongation. The 60 -mil thick HDPE geomembrane provides a good balance between flexibility and seamability, and is therefore appropriate from the viewpoint of installation considerations. The requirements for the geomembrane specified for this design are included as Section 31 05 19.16 of the Technical Specifications attached as Appendix M to this permit application. 5.4.6 Geosynthetic Clay Liner (GCL) The GCL acts as the low -permeability soil component of the composite liner. The GCL is approximately 0.25 in. thick and its hydraulic conductivity is typically on the order of 10-9 cm/s, based on laboratory permeability tests. The GCL is used to provide a plugging action in the event of a liner penetration. The low permeability clay contained in the GCL is dry when installed. If a penetration occurs, the clay will absorb some of the leachate passing through the HDPE liner and will swell to seal off the penetration. The requirements for the GCL specified in this design are included as Section 3105 19.23 of the Technical Specifications (Appendix M). 5.5 Leachate Collection Pipe Design 5.5.1 General The function of the leachate collection (header) pipes is to assist the conveyance of leachate collected across the cell floor and efficiently direct leachate to the collection sump within each cell. Collection pipes must have adequate flow capacity to convey the leachate and adequate structural resistance to withstand the applied loads. This section presents an evaluation of the flow capacity and structural stability of the proposed leachate collection pipes. A detailed discussion of the design calculations are provided in the calculation package titled "Leachate Collection System Analysis" (Appendix F). 5.5.2 Pipe Flow Capacity Design The flow capacity of a 6 -inch diameter leachate collection system pipes in the landfill cell was evaluated using the peak daily leachate generation rate from the HELP model based on the worst-case scenario (i.e., 10 ft of waste within the cell). A detailed description of the methods used and calculations performed to evaluate the flow capacity of the leachate collection pipes are presented in the calculation package titled "Leachate Collection System Analysis" (Appendix F). The calculations indicate that the pr-apase a 6 -inch diameter HDPE pipe will have sufficient flow capacity to handle the peak leachate flow. However, for consistency with other DEP disposal facilities, the Leachate Collection Pipe to be installed at the proposed Onsite CCR Landfill will be an 8 -inch diameter HDPE pipe. 5.5.3 Pipe Structural Stability The leachate collection pipe must be able to withstand the loads applied to it. The pipes were generally evaluated for two conditions: (i) initial conditions; and (ii) post -closure conditions. GC5770/Sutton -Construction Application _TR-Ol.docx 20 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants The initial condition assumes stresses imparted on the pipe during construction of the landfill. The final, post -closure condition is the load condition present after waste has reached the maximum elevation and the landfill is closed. In addition, four pipe failure mechanisms are generally considered when designing a buried plastic pipe: • wall crushing; • wall buckling; • excessive ring deflection; and • bending strain. A detailed discussion of the failure mechanisms, loading conditions and design calculations are presented in the calculation package titled "Leachate Collection System Analysis" (Appendix F). Based on the results of these calculations, the proposed leachate collection pipes within the landfill will meet or exceed the minimum acceptable values recommended by the pipe manufacturers. The pipe requirements are Specifications (Appendix M). 5.5.4 Pipe Perforation Sizing specified in Section 40 05 33 of the Technical The pipe perforations in the leachate collection (header) pipes and sump pipes were sized to prevent the infiltration of the drainage gravel into the pipe. Perforation sizing is dependent upon the gradation of the drainage gravel utilized. The pipe perforation sizing evaluation is presented in the calculation package titled "Leachate Collection System Analysis" (Appendix F). Calculations indicate that 1/2 -inch diameter perforations are appropriate for the leachate collection pipes and %-inch diameter perforations appropriate for the sump leachate pipes. 5.6 Leachate Removal and Transmission Systems 5.6.1 Overview This section presents a brief description of the calculations performed for the design of the leachate removal and transmission systems for the proposed landfill. The components of the leachate removal and transmission system include the leachate sump pumps and a pipeline to convey leachate from the sumps to the on-site leachate storage area. 5.6.2 Leachate Removal Pumps Each cell is equipped with one leachate sump pump in the leachate collection system with provisions for a secondary sump pump to be used as backup during maintenance activities. The selected pumps will be stainless steel submersible pumps of the type commonly used for leachate handling. The sump pumps were sized to remove the peak daily leachate volume generated within a 24-hour period as estimated by the HELP model simulations and leachate generation scenarios developed in the calculation package title "Leachate Generation Life Cycle Analysis" GC5770/Sutton -Construction Application _TR-0I.docx 21 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants (Appendix G). The sump pump design for all landfill cells was conservatively based on the (maximum) leachate volume generated for the largest landfill cell. The recommended leachate sump pumps are presented in the calculation package titled "Leachate Pump and Transmission System Design" included as Appendix I to this permit application. 5.6.3 Leachate Transmission Pipeline The leachate transmission pipeline conveys leachate removed from the sump within each landfill cell to the on-site leachate storage area. An HDPE pipe was selected for the leachate transmission pipeline because of its resistance to the chemicals and compounds contained in leachate. Sizing the leachate transmission pipe considered the required flow rate resulting from the peak daily leachate volume generated within a 24-hour period for the largest landfill cell as estimated from the HELP model simulations and leachate generation scenarios developed in the calculation package title "Leachate Generation Life Cycle Analysis" (Appendix G). The leachate transmission pipe design was conservatively based on the longest reach that the pipeline will have to convey leachate. A dual containment leachate transmission pipe will be utilized to convey leachate. The leachate transmission (primary or carrier) pipe consists of an 8 -inch nominal diameter double -walled HDPE pipe designed to handle the flow from the leachate collection sump pumps. The carrier pipe is installed within a 10 -inch nominal diameter HDPE containment pipe. The containment pipe serves the following purposes: (i) protects the environment from potential leakage coming from the carrier pipe; and (ii) protects the primary carrier pipe against structural damage. The required leachate transmission pipe is presented in the permit drawings (Appendix A), and the corresponding pipe requirements are specified in Section 40 05 33 of the Technical Specifications (Appendix M). 5.6.4 Pumps and Piping The sizing of the leachate removal pumps and transmission pipe, as described above, must be performed as a unit to account for flow rates, pumping heads, and pipe length and associated frictional losses. Therefore, the selection of the appropriately sized pumps and pipes becomes an iterative process such that the most efficient combination is developed. Design calculations performed for the leachate pump and transmission systems are included in the calculation package titled "Leachate Sump Pump and Transmission System Design" (Appendix I). 5.7 Leachate Storage and Transfer Leachate from the landfill will be stored temporarily at the on-site leachate storage area as shown in the permit drawings (Appendix A). The on-site leachate storage area will consist of temporary GC5770/Sutton - Construction Application_TR-Ol.docx 22 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill 11,r-� eostec [l Construction Application Report COI'iSLillBntS or permanent above -ground leachate storage tanks with secondary containment. The leachate storage tanks will provide enough capacity to store 3 days of leachate generation, at the peak daily leachate generation rate for the landfill. The calculated leachate rates over the life of the landfill and associated leachate storage calculations are provided in the calculation package titled "Leachate Generation Life Cycle Analysis" (Appendix G). The leachate storage tanks will eventually result in a total leachate storage capacity of approximately 2-5-51,000,000254 gallons. ewever-,—_dDuring the initial stages of landfill development the calculated leachate generation rates (during the initial stage of landfill development) are expected to be less than the peak leachate generation rate calculated at a later stage of landfill development. Based or the ,,, letilatio ,s provided in Appendix x r it is estimated operations.that appr-o*imately 135,974 gallons of stef:age will be rv"ired for- Phase 1 The *tial sehe"Ie for- , ,,idiom leachate storage requirement is wiles -based on the —aeteal-disposal rates at the site, "leachate generation data for the facility, and the rate at which leachate is trucked for off-site treatment and disposal. Secondary containment for the leachate storage tanks will be provided as shown in the permit drawings (Appendix A). The secondary containment system inn tidos an appy-,. iffl tell 120 ft diameter- eoner-ete pad with a perimeter- wall about 5.5 4 high. This eenfigtffatfen will provide a secondary containment storage capacity equivalent to 110% of the total storage capacity provided by the lamest leachate storage tanks. Operational and environmental controls for the leachate storage tanks are discussed in detail in the Operation Plan, included as Appendix K to this permit application. As previously mentioned, tanker trucks will transport leachate from Sutton to a wastewater treatment plant periodically for off-site treatment and disposal. Duke is currently pursuing a permit to discharge leachate from Sutton at the Cape Fear Public Utility Authority Wastewater Treatment Plant, in Wilmington, North Carolina. Permit approval from the Cape Fear Public Utility Authority Wastewater Treatment Plant will be submitted under separate cover. 5.8 Leachate Sampling and Analysis A detailed description of the leachate sampling and analysis is provided in the Groundwater Monitoring Plan (Appendix L). Leachate sampling and analysis will be performed on an annual basis. The leachate will be sampled from the leachate collection system transmission forcemain prior to entering the leachate storage tanks. GC5770/Sutton -Construction Application _TR-0I.docx 23 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 6 LANDFILL CLOSURE AND POST -CLOSURE CARE 6.1 Introduction A landfill Closure and Post -Closure Care (C/PCC) Plan describing the methodology and approach for closure of the Sutton onsite CCR landfill has been prepared and is provided as Appendix T. The purpose of the C/PCC Plan is to describe general closure requirements for the facility and includes: • a discussion of the closure schedule; • the final cover system design; • post -closure activities; and • financial responsibility. The remainder of this Section provides an overview of the Closure and Post -Closure Care Plan components. 6.2 Closure Schedule The footprint of the proposed landfill is approximately 100 acres, with a top elevation at closure of approximately 112 ft NAVD88. It is anticipated that portions of the proposed landfill will be closed incrementally as it reaches the maximum design elevation. The estimated life of the landfill at build -out, is approximately 12 years, as discussed in Section 3. The incremental closure approach for the landfill is proposed to minimize leachate generation in the landfill. It is anticipated that partial closure in areas of the landfill that have reached final elevations will be accomplished concurrent with waste placement in the active areas of the landfill. Areas that have reached final elevations will be closed with a final cover system within 180 days of reaching the final elevation, or a 612 -inch thick intermediate cover will be placed over the area. Following closure of each disposal unit or portions of units, the owner shall notify the Division that a Certification, signed and sealed by the professional engineer verifying that closure has been completed in accordance with the closure plan, has been placed in the operating record. This Certification will state that the site was closed in accordance with the Closure Plan and applicable solid waste regulations and laws. Following closure of the landfill under build -out conditions (i.e., Phases 1, 2, and 3), the owner and operator shall record a notation on the facility property deed to this effect, or some other instrument that is normally examined during a title search, and notify the Division that the notation has been recorded and a copy has been placed in the operating record. The notation on the deed shall in perpetuity notify any potential purchaser of the property that the land has been used as a CCR disposal facility and its future use is restricted under the Closure Plan. GC5770/Sutton -Construction Application _TR-0I.docx 24 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 6.3 Final Cover System Design Geosynte& consultants The final cover system of the Sutton onsite CCR landfill will be constructed after final waste elevations are achieved. The landfill will have side slopes graded at 3H:1 V, and top slopes graded at 5 percent to maximize runoff and minimize erosion. Drainage swales will be constructed on the final cover system to collect and divert surface water run-off via downdrain pipes to a perimeter swale at the toe of the landfill, and then to the storm water management areas (i.e., storm water ponds). This will help minimize erosion at the surface of the final cover system. The various components of the final cover system are discussed in the remainder of this section. The proposed final cover system on the landfill side slopes and top slopes is presented on the permit drawings (Appendix A). The final cover system for the proposed landfill will be constructed using industry standard construction practices, a CQA program, and quality materials. The technical specifications and CQA procedures for the cover system are included in Appendix M and Appendix N, respectively. The proposed final cover system on the landfill top slopes as indicated on the permit drawings and consists of, from top to bottom: • 0.5 -ft thick vegetative layer; • 1.5 -ft thick protective soil layer; • 40 -mil thick textured HDPE geomembrane; and • 0.5 -ft thick bedding layer/intermediate cover. The final cover system on the 3H:1 V side slopes of the landfill consists of, from top to bottom: • 0.5 -ft thick vegetative layer; • 1.5 -ft thick protective soil layer; • double -sided geocomposite lateral drainage layer; • 40 -mil thick textured HDPE geomembrane; and • 0.5 -ft thick bedding layer/intermediate cover. The actual thickness of the bedding layer will be a function of grading activities and may be completely removed during grading activities for final cover placement. 6.3.1 Final Cover System Construction Procedure The surface of the final cover system bedding layer will be graded and compacted to prepare a smooth base for installation of the final cover geomembrane. The bedding layer may be comprised of soil and/or CCR to accommodate final grading operations. The geomembrane and the lateral drainage layer will be terminated at the toe of the waste slope along the landfill perimeter. At the termination point, the final cover geomembrane will be welded to the geomembrane of the bottom liner system to seal the landfill. The geocomposite drainage layer GC5770/Sutton - Construction Application_TR-Ol.docx 25 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report Geosynte& consultants will discharge into the drainage swales. The details of the final cover termination are presented in the permit drawings (Appendix A). 6.3.2 Final Cover System Stability A potential failure surface within the final cover system on the side slopes of the landfill was evaluated using the veneer slope stability analysis discussed in the calculation package titled "Final Cover Veneer Slope Stability Analysis" included in Appendix O of this permit application. The results of the analyses indicate that the minimum interface friction angle required to achieve a FS of 1.5 or greater is typical of the soil-geosynthetic and geosynthetic-geosynthetic interface friction angles reported in the literature. 6.3.3 Final Cover Settlement The soil components of the final cover system act as a surcharge for the underlying waste. The CCR is anticipated to compress and settle under this surcharge. Uneven total and differential settlements of the CCR may adversely affect the drainage of storm water from the landfill top slopes of the final cover system. A CCR settlement analysis was performed to evaluate the adequacy of the slopes and ensure positive drainage (i.e., drainage towards the top slope diversion berms or swales) along the top slopes, and to assess the impact on geomembrane integrity. The calculations are presented in the calculation package titled "Final Cover System CCR Settlement Analysis" included in Appendix P of this permit application. The results of the calculations indicate that drainage is not expected to be adversely impacted due to CCR settlements. Similarly, the calculated average strain values in the final cover geomembrane indicate that the geomembrane is not expected to be adversely impacted due to waste settlements. 6.3.4 Final Cover Drainage System The final cover drainage system on the side slopes is designed to control seepage forces in the vegetative layer and is necessary for the stability of the vegetative layer. The final cover drainage system primarily consists of a lateral drainage layer placed on top of the geomembrane barrier layer of the final cover system. This lateral drainage layer collects the water that percolates through the overlying vegetative layer and conveys the water to the drainage swales. Details of the final cover drainage system are presented in the permit drawings (Appendix A). Computations for maximum hydraulic head in the lateral drainage layer are discussed in the calculation package titled "Final Cover System Performance Evaluation" attached as Appendix Q to this permit application. GC5770/Sutton -Construction Application _TR-Ol.docx 26 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 6.3.5 Surface Water Drainage System Geosynte& consultants The permit drawings (Appendix A) present a storm water management plan for the proposed landfill. Drainage swales will be incorporated in the final cover system on the side slopes of the landfill as indicated in the permit drawings to collect and convey surface water run-off at non- erosive velocities and limit the length of sheet flow on the final cover to minimize the formation of erosion rills and gullies in the vegetative layer. The drainage swales will be incorporated in the final cover system approximately every 50 -ft in elevation. These drainage swales will convey storm water to the downdrain pipes, and will be approximately 15 -ft wide with a variable depth that varies from 0.5 -ft (at its shallowest point) to 2.25 -ft deep (at the downdrain pipes). The downdrain pipes will convey storm water from the landfill side slopes and top slopes to a perimeter swale at the toe of the landfill, and then to the storm water management areas (i.e., storm water ponds) for the site. The downdrain pipes will be 18 -inch diameter corrugated HDPE pipes (smooth inside) buried within the 2 ft thick soil layer of the final cover system. Design calculations confirming the adequacy of the drainage swales and the down drains to convey the storm water run-off are presented in the calculation package entitled "Final Cover Storm Water Management System Design" attached as Appendix R to this permit application 6.3.6 Erosional Stability A calculation to predict erosion soil loss in the cover is presented in the calculation package titled "Final Cover System Performance Evaluation" (Appendix Q). The results of this calculation indicate that the landfill side slope and top slope vegetation adequately controls erosion of the cover. 6.4 Post -Closure Activities Post -closure activities will be conducted at the facility in accordance with Rule .0510 for a period of 30 years following final closure of the facility. The Division may decrease the length of the post -closure period if the owner or operator demonstrates that the reduced period is sufficient to protect human health and the environment, and the Division approves this demonstration. The period might be increased by the Division if the Division determines that the lengthened period is necessary to protect human health and the environment. Post -closure maintenance and monitoring will be conducted at the Sutton onsite CCR landfill for a period of 30 years after final closure. Monitoring will include semi-annual sampling of groundwater and surface water, and monthly inspection of the final cover systems. Maintenance will include mowing at least two times per year as well as needs identified through the monitoring program will be initiated no later than 60 days after the discovery or within 24 hours if a danger or imminent threat to human health or the environment is indicated. GC5770/Sutton -Construction Application _TR-Ol.docx 27 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 6.4.1 Post Closure Land Use Geosynte& consultants The primary land use for the site after closure will be open dormant green space. Post -closure use of the property shall not affect the integrity of the cap system, base liner system, or any other components of the containment system, or the function of the monitoring systems unless necessary to comply with the requirements in the Solid Waste Management Rules. However, recovery of CCR for beneficial re -use may be desired in the future. The Division may approve disturbance if the owner or operator demonstrated that disturbance of the cap system, base liner system, or other component of the containment system, including removal of CCR for beneficial re -use, will not increase the potential threat to human health or the environment. 6.5 Financial Assurance In accordance with the North Carolina Solid Waste Management Rules and North Carolina Session Law S.L. 2011-262, financial assurance will be provided by Duke in the form of the Corporate Financial Test. Documentation as required by 40 C.F.R. §258.74(e)(2) shall be placed in the facility operating record before the initial receipt of waste. The Director will be notified when the documentation of financial assurance has been placed in the operating record. However, closure and post -closure cost estimates have been prepared and provided herein as Appendix J. After the initial placement of documentation of financial assurance as required by 40 C.F.R. §258.74(e)(2) in the facility operating record, Duke will annually update the information and place updated information in the operating record within 90 days following the close of their fiscal year. The Director may provide up to an additional 45 days if Duke can demonstrate that 90 days is insufficient time to acquire audited financial statements. GC5770/Sutton -Construction Application _TR-Ol.docx 28 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 7 ENVIRONMENTAL CONTROL AND MANAGEMENT 7.1 Overview The Water Quality Monitoring Plan provides a detailed description of the water quality monitoring activities that will be performed at Sutton to meet regulatory requirements. The purpose of the Water Quality Monitoring Plan is to describe the: (i) ground water monitoring program; (ii) surface water monitoring program; (iii) leachate monitoring program; (iv) sampling and analytical methodologies; and (v) reporting procedures. The following subsections describe key components of the Water Quality Monitoring Plan. 7.2 Groundwater Monitoring Plan A groundwater monitoring plan — provided as Appendix L to this Report — has been developed pursuant to requirements set forth by the North Carolina Solid Waste Management (NCSWM) Rule 15A NCAC 13B.1631 through 1637 and the EPA 40 CFR Part 257.90 through 257.97. The groundwater monitoring plan also addresses the requirements outlined by the DENR Division of Waste Management Solid Waste Section for the proper environmental sampling, monitoring and electronic reporting at solid waste landfills. 7.3 Surface Water Management Plan 7.3.1 Surface water management system design A Surface Water Drainage Report has been developed to demonstrate that the surface water management system design complies with the requirements of the North Carolina Department of Environment and Natural Resources (NCDENR) Best Management Practices (BMP) Manual and the New Hanover County Storm water Design Manual (NHCSDM, 2000). The Final Cover Storm Water Management System Design Report — provided as Appendix R to this Report — contains a narrative description of the drainage conditions and features at the site under pre - development and post -development conditions, addresses flood control, and is accompanied by engineering design drawings and supporting hydrologic and hydraulic design calculations for the site's drainage features (temporary and permanent). 7.3.2 Erosion and sediment control plan An Erosion and Sediment Control (E&SC) Plan has been developed to demonstrate that the proposed E&SC measures comply with North Carolina Solid Waste Management (NCSWM) Rule 15A NCAC 13B. 0504. Both temporary and permanent E&SC measures proposed to be implemented during the phases of construction were designed in accordance with the North Carolina Erosion and Sediment Control Planning and Design Manual (NCESC Design Manual) and are presented in the E&SC Plan provided as Appendix S to this report. GC5770/Sutton -Construction Application _TR-0I.docx 29 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Geosy ted [� Construction Application Report n ' ` consultants 8 LANDFILL CONSTRUCTION AND OPERATION 8.1 Operation Plan The Operation Plan provides a detailed description of the daily operations of the landfill at Sutton, including contingency operations. The primary purpose of the Operation Plan is to describe the framework to operate and manage the proposed landfill at Sutton so that the landfill is operated and maintained in a condition that protects the public health and the environment. The Operation Plan is provided as Appendix K to this permit application. 8.2 Technical Specifications It is assumed that the proposed onsite CCR landfill at Sutton will be constructed with quality materials. The technical specifications for all construction materials, especially the liner and leachate collection system geosynthetics are presented in Appendix M of this permit application. 8.3 Construction Quality Assurance plan It is assumed that the proposed Sutton onsite CCR landfill will be constructed using good construction practices, and that a good construction quality assurance (CQA) program will be implemented. The CQA Plan for all construction activities, especially liner and leachate collection system construction are presented in Appendix N of this permit application. GC5770/Sutton -Construction Application _TR-0I.docx 30 December 2015 (Rev. 1) L. V. Sutton Plant, Onsite Landfill Construction Application Report 9 REFERENCES GeoSynte& consultants State Climate Office of North Carolina, NC State University (2015), CRONOS Internet Database available at http://www.ne-climate.ncsu.edu/cronos/, accessed 9 April 2015. U.S. Geological Survey (USGS), 2014, Seismic Hazard Maps and Data — Lower 48 PGA 2% in 50 yrs, accessed 03/11/15, from USGS web site: htt2://earthquake.us.gs.gov/hazards/Troducts/conterminous/. GC5770/Sutton -Construction Application _TR-0I.docx 31 December 2015 (Rev. 1) TABLES Table 1. Solid Waste Management Rules Cross Reference for Construction Application 15A NORTH CAROLINA ADMINISTRATIVE CODE SUBCHAPTER 13B SECTION DESCRIPTION LOCATION COMMENTS .0503 (1) Siting Requirements (a) Shall not restrict the flow of the 100 -year flood, reduce the temporary water storage capacity of the floodplain or result in washout of solid waste (b) Shall not adversely impact endangered or threatened species, archeaeological or historical site, state park (c) Airport buffer requirements (d) On-site/off-site soil availability (2) Design Requirements (a) Landfill gas generation Section 5.2 requirements (b) Public access and public exposure (c) Surface water requirements (d) Groundwater requirements (e) Open burning requirements (f) Buffer requirements (g) Sedimentation Pollution Control Law (15A NCAC4) requirements .0504 (1) Required Documentation (a) Aerial photograph on scale of 1 "- 400' Section 2.2, Site Suitability Report Section 2.3, Site Suitability Report Section 2.4, Site Suitability Report Section 3.5, Permit Application Report Section 3.2, Operation Plan Section 6, Permit Application Report Section 5.2 Permit Application Report Section 3.5, Operation Plan Appendix 1, Site Suitability Report Section 5.2.2, Permit Application Report Prepared by Geosyntec, Dated May 2015 Prepared by Geosyntec, Dated May 2015 Prepared by Geosyntec, Dated May 2015 Not applicable (N/A) for CCR landfill Prepared by Geosyntec, Dated May 2015 Section 3.2, Site Suitability Report Prepared by Geosyntec, Dated May 2015 15A NORTH CAROLINA ADMINISTRATIVE CODE SUBCHAPTER 13B SECTION DESCRIPTION LOCATION COMMENTS (b) Map on a scale of 1"-1,000' Section 3.3, Site Suitability Report Prepared by Geosyntec, Dated Permit Application Report Appendix A, Permit Application Report May 2015 (c) Geological and Hydrological Volume II - Site Suitability Report Prepared by Geosyntec, Dated Study May 2015 (d) Conceptual Design Plan Section 3.5, Site Suitability Report Prepared by Geosyntec, Dated May 2015 (e) Local Government Approvals Section 3.6, Site Suitability Report Prepared by Geosyntec, Dated May 2015 (f) Compliance with siting standards Section 3.7, Site Suitability Report Prepared by Geosyntec, Dated in Rule .0503(1) May 2015 (g) Report Section 3.8, Site Suitability Report Prepared by Geosyntec, Dated May 2015 (h) Additional Information Section 3.9, Site Suitability Report Prepared by Geosyntec, Dated May 2015 (2) Construction Plan Application (a) Map showing existing features Appendix A, Permit Application Report (b) Grading Plan (c) Construction Plan (d) Erosion Control Plan (e) Engineering diagrams and typical sections (f) Cross sections Appendix A, Permit Application Report Appendix A, Permit Application Report Appendix A, Permit Application Report Appendix A, Permit Application Report Appendix A, Permit Application Report Volume II - Site Suitability Report (g) Site Development Appendix A, Permit Application Report (h) Report Permit Application Report Prepared by Geosyntec, Dated May 2015 ATTACHMENT C UPDATED OPERATIONS PLAN Prepared for DUKE ENERGY. PROGRESS Duke Energy Progress, LLC 526 South Church Street Charlotte, North Carolina 28202 OPERATIONS PLAN L.V. SUTTON ENERGY COMPLEX ONSITE COAL COMBUSTION RESIDUALS LANDFILL Wilmington, North Carolina Prepared by GeosyntecO' consultants Geosyntec Consultants of NC, PC 1300 South Mint Street, Suite 410 Charlotte, North Carolina 28203 License No. C-3500 Project Number GC5770 December 2015 (Rev. 1) Victor M. Damasceno, Ph.D., P.E. North Carolina Registration No. 042284 Date: Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill DESCRIPTION OF REVISIONS GeosynteC D consultants The following table provides a brief description of revisions to the Operations Plan. The Operations Plan was originally submitted to the North Carolina Department of Environment and Natural Resources (NCDENR) in August 2015 and modified as shown in the following table: Revision Date of Document Description of Revisions Initial Issue August 2015 Initial issuance of document. GC5770\Operations Plan -Sutton LF-TR-Ol.docx i December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill TABLE OF CONTENTS Geosyntec° consultants 1 GENERAL FACILITY OPERATIONS........................................................................1 1.1 Overview....................................................................................................................1 2.3.2 1.2 Contact Information.................................................................................................... l 1.3 Safety.......................................................................................................................... 2 1.4 Access and Security Requirements.............................................................................2 2.3.5 1.5 Operating Hours.........................................................................................................2 2.3.6 1.6 Signs...........................................................................................................................2 2.3.7 1.7 Training......................................................................................................................2 1.8 Record Keeping.......................................................................................................... 3 1.9 Design Drawings........................................................................................................3 2 OPERATIONS MANAGEMENT.................................................................................. 5 2.1 Waste Handling and Landfill Sequencing.................................................................. 5 2.1.1 Landfill Capacity..............................................................................................5 2.1.2 Waste Acceptance, Disposal, and Screening Requirements ............................6 2.1.3 Construction and Demolition (C&D) Waste and Land Clearing and Inert Debris(LCID).............................................................................................................7 2.1.4 Vacuum Truck Waste.......................................................................................7 2.1.5 Dust, Litter, Odor, and Vector Control............................................................ 8 2.1.6 Fire Control......................................................................................................9 2.1.7 Landfill Sequencing.........................................................................................9 2.1.8 Waste Placement.............................................................................................. 9 2.1.9 Compaction Requirements and Testing.........................................................10 2.1.10 Cover Requirements....................................................................................... 11 2.2 Leachate and Contact Water Management...............................................................12 2.2.1 Contact Water Source 1.................................................................................12 2.2.2 Contact Water Source 2.................................................................................12 2.2.3 Contact Water Source 3.................................................................................13 2.3 Leachate Collection System (LCS)..........................................................................13 2.3.1 LCS Maintenance...........................................................................................14 2.3.2 LCS Record Keeping and Sampling..............................................................14 2.3.3 Leak Detection System (LDS).......................................................................14 2.3.4 LDS Maintenance...........................................................................................15 2.3.5 LDS Record Keeping and Monitoring...........................................................15 2.3.6 LDS Response Action Plan............................................................................16 2.3.7 Contingency Plan...........................................................................................18 2.4 Stormwater Collection Conveyance.........................................................................18 GC5770\Operations Plan -Sutton LF-TR-Ol.docx ii December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 2.4.1 Stormwater Discharge....................................................................................19 2.5 Surface Water Basin Maintenance Requirements....................................................19 2.6 Groundwater Monitoring Well Access Requirements..............................................19 2.7 Landfill Gas Management........................................................................................ 20 3 EROSION AND SEDIMENTATION CONTROL.....................................................21 3.1 E&SC Measures Monitoring and Maintenance........................................................21 3.2 Surface Erosion Monitoring..................................................................................... 22 4 VEGETATION MANAGEMENT...............................................................................23 4.1 Temporary Seeding...................................................................................................23 4.2 Permanent Seeding................................................................................................... 24 5 LANDFILL CLOSURE.................................................................................................25 6 REQUIRED REGULATORY SUBMITTALS...........................................................26 LIST OF TABLES Table 1. Design Drawings ........................................ Table 2. Landfill Expansion Life Estimation ........... LIST OF APPENDICES Attachment 1 Dust Control Plan Attachment 2 Closure/Post-Closure Plan .......................................................... 3 .......................................................... 6 GC5770\Operations Plan -Sutton LF-TR-Ol.docx iii December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 1 GENERAL FACILITY OPERATIONS 1.1 Overview The purpose of this Operations Plan is to provide a plan for the safe and efficient operations of the L.V. Sutton Energy Complex (Sutton) Onsite Coal Combustion Residuals (CCR) Landfill. This Operations Plan presents the operational requirements for: (i) General Facility Operations; (ii) Operations Management; (iii) Erosion and Sedimentation Control; and (iv) Vegetation Management along with guidance for Landfill Closure and Required Regulatory Submittals. The Operations Plan also includes Tables for Design Drawings, Landfill Life Estimation, and Appendices for Dust Control Plan, Phasing Drawings, and Closure/Post-Closure Plan. The Operations Plan was prepared consistent with 15A NCAC 13B .0505 Operational Requirements for Sanitary Landfills rules. Sutton is located in an approximately 3,308 -acre property in New Hanover County, near Wilmington, North Carolina and is situated between the Cape Fear River to the West and the Northeast Cape Fear River to the east and is located approximately 1.9 miles south of the New Hanover County Municipal Solid Waste (MSW) Landfill. The Sutton plant is owned by Duke Energy Progress, LLC (DEP) and formerly operated as a three -unit, 575 -megawatt coal-fired plant from 1954 until retirement in November 2013. Upon retirement of the coal- fired units in November 2013, a new 625 -megawatt gas-fired combined -cycle unit began operating. The coal-fired units of the Sutton Plant are currently undergoing decommissioning and demolition. The Sutton property is classified within the I-2 (heavy industrial) District by the Zoning Ordinance, as defined by the County of New Hanover. 1.2 Contact Information Correspondence and questions concerning the operation of the Sutton CCR Landfill should be directed to the appropriate entity as follows: (hz7n er Duke Energy Progress, LLC L.V. Sutton Energy Complex 801 Sutton Steam Plant Road, Wilmington, NC 28401 (910) 341-4754 Facility Contact: Station Sponsor for Landfill Operations or Environmental Professional State Regulatory AgencX North Carolina Department of Environment and Natural Resources Division of Waste Management, Solid Waste Section Asheville Regional Office 2090 US Highway 70, Swannanoa, North Carolina 28778 (828) 296-4500 Permitting Engineer: Larry Frost GC5770\Operations Plan -Sutton LF-TR-Ol.docx 1 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill 1.3 Safety GeosynteC D consultants Landfill operations at the Sutton CCR Landfill were developed considering the health and safety of the facility's operating staff. The operating staff is provided with site-specific safety training prior to landfill operations, and onsite activities are to be conducted according to the applicable sections of Duke's Safe Work Practices. 1.4 Access and Security Requirements The Sutton CCR Landfill is located entirely within Duke property limits. Security for the site shall consist of fencing, gates, berms, wooded buffers, and security check stations. Unauthorized vehicle access to the site shall be prevented around the landfill property by security check stations, woods, fencing, gates, and stormwater conveyance features. The access road to the site is of all-weather construction and will be maintained in good condition. Potholes, ruts, and debris on the road(s) will receive immediate attention in order to avoid damage to vehicles. 1.5 Operating Hours The Sutton Onsite CCR Landfill shall be operated seven days a week, as needed. 1.6 Signs A sign providing the landfill permit number and a statement reading "NO HAZARDOUS OR LIQUID WASTE PERMITTED" shall be posted at the site entrance and shall be maintained in good condition. Edge -of -waste markers shall be installed to delineate the edge of waste. These markers shall be maintained in good condition and remain visible at all times. 1.7 Training Due to the diversity and nature of job tasks required at the Sutton CCR Landfill, personnel shall be adequately trained to handle facility operations and maintenance. The Station Sponsor for Landfill Operations shall have a general understanding of all the tasks required for site operations. Individuals performing the various tasks shall have adequate training for the site-specific tasks they are assigned. Duke shall provide a site- specific training program for facility personnel. Noteworthy operations and maintenance tasks to be addressed in training include: • Maintaining accurate records of waste loading (quantitative and qualitative); • Operating requirements for stormwater segregation from exposed waste areas; and • Operating and maintaining the leachate collection system (LCS). GC5770\Operations Plan -Sutton LF-TR-Ol.docx 2 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants All training will be documented and training records will be kept on-site. The Station Sponsor for Landfill Operations will conduct operator training courses in accordance with the permit requirements. 1.8 Record Keeping An operating record is to be maintained on-site, including but not limited to the following records: • Leachate Collection System (LCS) — Periodic Maintenance Documentation; • Leachate monitoring; • Stormwater Maintenance and Inspection Logs; • Erosion and Sedimentation Control Inspection Logs; • Periodic Landfill Inspection Reports; • Dust Control Plan Monitoring Worksheets (included in the Dust Control Plan); • Groundwater Monitoring (and Sampling) Documentation; and • Operations Plan. The above records are to be kept in the operating record for the active life of the Sutton CCR Landfill and the post -closure care period. Information contained in the operating record must be furnished upon request to the North Carolina Department of Environment and Natural Resources (NCDENR) Division of Waste Management, Solid Waste Section (Division) or be made available for inspection by the Division. Additional records kept on site should include: • Solid waste facility permits; • Record of the amount of solid waste received summarized on a monthly basis based on scale records; • Regulatory agency inspection reports; • Permit -to -Construct Application; • Employee training program and records; and • Landfill drawings and specifications. 1.9 Design Drawings A list of the landfill engineering and facility plan design drawings developed for the Sutton CCR Landfill is provided in Table 1. The design drawings provide the location of landfill features, landfill construction details, and technical design and construction notes. Table 1. Design Drawings Drawing No. Title Drawing 1 Title Sheet GC5770\Operations Plan -Sutton LF-TR-Ol.docx 3 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill GeosynteC D consultants Drawing 2 Topographic Map Drawing 3 Existing Conditions Plan Drawing 4 Site Characterization Plan Drawing 5 Site Development Plan Drawing 6 Top of Subgrade Grading Plan Drawing 7 Top of Liner Grading Plan Drawing 8 Top of Leachate Collection System Grading Plan Drawing 9 Final Cover System Grading Plan Drawing 10 Leachate Storage Plan Drawing 11 Phasing Plan 1 Drawing 12 Phasing Plan 2 Drawing 13 Phasing Plan 3 Drawing 14 Groundwater Monitoring Plan Drawing 15 Construction Sequencing Plan I Drawing 16 Construction Sequencing Plan II Drawing 17 Construction Sequencing Plan III Drawing 18 Surface Water Management Plan Drawing 19 North Storm Water Pond Plan and Details Drawing 20 South Storm Water Pond Plan and Details Drawing 21 Erosion and Sediment Control Phasing Plan 1 Drawing 22 Erosion and Sediment Control Phasing Plan 2 Drawing 23 Erosion and Sediment Control Phasing Plan 3 Drawing 24 Landfill Cross Sections Drawing 25 Perimeter Berm Cross Sections Drawing 26 Liner and Final Cover System Details I Drawing 27 Liner and Final Cover System Details II Drawing 28 Leachate Sump Plan Drawing 29 Secondary Sump Cross Sections Drawing 30 Primary Sump Cross Sections Drawing 31 Leachate Collection System Details I Drawing 32 Leachate Collection System Details II Drawing 33 Leachate Management System Schematic Design Drawing 34 Surface Water Management Details I Drawing 35 Surface Water Management Details II Drawing 36 Surface Water Management Details III Drawing 37 Erosion and Sediment Control Details I Drawing 38 Erosion and Sediment Control Details II GC5770\Operations Plan -Sutton LF-TR-Ol.docx 4 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 2 OPERATIONS MANAGEMENT The primary objective of operations management at the Sutton Onsite CCR Landfill is to dispose of CCR in compliance with permit conditions while operating in a safe manner. Landfilling operations will begin in Phase 1 (Cells 3 — 8) followed by Phase 2 (Cells 1 and 2) and Phase 3 (Cells 9 — 11), after which Phases 1, 2, and 3 will be filled to final grade. During landfill operations the working face in the cell will be limited to as small an area as practical, at the owner's discretion, with waste in other areas covered with appropriate material. Contact water from the active face will be directed to chimney drains interior to the landfill footprint. Additionally, the landfill has been designed to provide separation of contact water from non - contact water. Contact water is defined as water that contacts waste, including exposed waste within the landfill, operational haul roads surfaced with bottom ash generally located within the limit of waste, and perimeter access roads between the point of landfill egress and the CCR Basins. Contact water will be managed as leachate while non -contact water will be managed as stormwater. Contact water and non -contact water separation are further described in subsequent subsections of this plan. 2.1 Waste Handling and Landfill Seauencing 2.1.1 Landfill Capacity The Sutton Onsite CCR Landfill is designed to receive waste at an annual disposal rate of approximately 1,040,000 cubic yards (cy) per year (or 1,250,000 tons per year) for the first 4 years of operation (once approximately 5,000,000 tons of CCR have been disposed), decreasing to 420,000 cy per year (approximately 500,000 tons per year) thereafter. The resulting landfill life for Phases 1, 2, and 3 is estimated to be approximately 12 years as represented in Table 2 below. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 5 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants Table 2. Landfill Expansion Life Estimation Notes: 1. Within the limit of waste of the respective phase and rounded to the nearest tenth of an acre. 2. Rounded to the nearest 1,000 cy. 2.1.2 Waste Acceptance, Disposal, and Screening Requirements The Sutton CCR Landfill is permitted to accept the following on-site waste types: • Coal combustion residuals (CCRs) (including fly and bottom ash, pyrites and coal mill rejects, and boiler slag); • Waste water treatment sludge (WWTS); • Petroleum Contaminated site soils; and • Plant decommissioning -related materials. The landfill owner or operator shall notify the Division within 24 hours of attempted disposal of any wastes the landfill is not permitted to receive. At a minimum, hazardous waste, yard trash, liquid wastes (except as noted in section 2.1.6), regulated medical waste, sharps not properly packaged, polychlorinated biphenyls (PCB) waste as defined in 40 Code of Federal Regulations (CFR) 761, and wastes banned from GC5770\Operations Plan -Sutton LF-TR-Ol.docx 6 December 2015 (Rev. 1) Approximate Estimated Airspace Estimated Construction Waste Footprint Available for Lifetime Sequence i (acres) Waste Disposal (years) (cy)2 Cell 3 10.1 840,787 0.9 Cell 4 9.2 810,807 0.8 Cell 5 8.9 766,286 0.7 a Cell 6 9 806,715 0.7 Cell 7 9 818,223 0.8 Cell 8 9.9 902,372 0.9 Celli 7.1 457,857 1.2 w Cell 2 7.9 549,967 1.3 Cell 10 916,989 1.5 M Cell 10 9.5 1,038,598 1.5 Cell 11 10.5 840,385 1.6 Totals 101.1 8,748,987 11.9 Notes: 1. Within the limit of waste of the respective phase and rounded to the nearest tenth of an acre. 2. Rounded to the nearest 1,000 cy. 2.1.2 Waste Acceptance, Disposal, and Screening Requirements The Sutton CCR Landfill is permitted to accept the following on-site waste types: • Coal combustion residuals (CCRs) (including fly and bottom ash, pyrites and coal mill rejects, and boiler slag); • Waste water treatment sludge (WWTS); • Petroleum Contaminated site soils; and • Plant decommissioning -related materials. The landfill owner or operator shall notify the Division within 24 hours of attempted disposal of any wastes the landfill is not permitted to receive. At a minimum, hazardous waste, yard trash, liquid wastes (except as noted in section 2.1.6), regulated medical waste, sharps not properly packaged, polychlorinated biphenyls (PCB) waste as defined in 40 Code of Federal Regulations (CFR) 761, and wastes banned from GC5770\Operations Plan -Sutton LF-TR-Ol.docx 6 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants disposal in North Carolina by General Statute 130A -309.10(f), must not be accepted at the landfill. Asbestos waste will not be disposed of in the landfill. The removal of waste from the landfill is prohibited without owner approval. Waste will be hauled and disposed of by dedicated and consistent operators from the waste source to the landfill. Access to the interim waste storage location(s) (e.g., fly ash stockpiles, etc.), haul routes, and landfill are restricted; therefore, no screening of waste is recommended. 2.1.3 Construction and Demolition (C&D) Waste and Land Clearing and Inert Debris (LCID) The Sutton CCR Landfill may receive construction and demolition waste, land clearing waste, inert debris, untreated wood, and yard trash (leaves, sticks) resulting from operations at Sutton. These materials shall not be placed within 25 ft of the exterior slopes. Waste will be placed on the smallest active face as practical and compacted with a dozer as densely as practical. Specific monitoring and in-place density testing of C&D waste and LCID is not required. Compacted C&D waste and LCID will be covered as described in Section 2.1.8.1. 2.1.3.1 Operation Cover — C&D Waste When the C&D waste disposal area exceeds one-half acre, and at least weekly, the compacted C&D waste will be covered with a minimum of 6 inches of earthen material (e.g., soils, CCR) 2.1.3.2 Operational Cover — Other Wastes For wastes other than asbestos waste and C&D waste, operational cover consisting of soil will be applied as needed for dust control and stormwater management. The operations cover may be applied at a thickness suited to its purpose. For example, the operational soil cover may be applied in thinner layers to provide dust control and it may be applied in thicker layers where protection from surface erosion is desired. Dust control measures shall be provided in accordance with the Dust Control Plan. 2.1.4 Vacuum Truck Waste Vacuum truck waste shall consist of permitted waste materials as described in Section 2.1. - - a ___ --_- __ _ r r- r -----_, --1 ------------- � � i _vistially ser-eened and immediately r-effieved from the vaetttim tfuek waste after- the waste - GC5770\Operations Plan -Sutton LF-TR-Ol.docx 7 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants The consistency of the vacuum truck waste may vary from a relatively dry state to a relatively wet, fluid-like state. Vacuum truck waste material shall be moisture conditioned by initial decanting of excess moisture from the waste or by mixing the waste with fly ash, bottom ash, or gypsum materials depending on its consistency. The vacuum truck waste shall be placed and spread in maximum 6 -inch lifts near the center of the operational area. The vacuum truck waste shall not be placed within 50 feet horizontally from exterior landfill slopes or within 50 feet of chimney drain structure locations. The vacuum truck waste material shall be thoroughly mixed with fly ash or bottom ash during waste placement using a dozer or other similar grading equipment to provide additional moisture conditioning prior to compaction. In-place density testing of the vacuum truck waste materials is not required. Vacuum truck waste shall only be placed within the landfill during landfill operating hours when landfill operator personnel are present. The vacuum contractor shall coordinate vacuum truck waste placement with landfill operator personnel. A Vacuum Truck Waste Disposal Log shall be used to document vacuum waste placement within the landfill. A Vacuum Truck Waste Disposal Log shall be used to verify the origin of vacuum truck waste and will include the date, time, weather conditions, estimated waste volume, visual waste screening and non -permitted waste removal, and Operator representative approval. The Vacuum Truck Waste Disposal Log may be modified as needed by the Owner or Operator to provide additional site specific operations information. The estimated volume of vacuum truck waste generated will be documented by the landfill operator along with monthly truck scale log records to estimate the cumulative vacuum truck waste transported and placed within the landfill. Dust control measures shall be provided for the vacuum truck waste in accordance with the Dust Control Plan. 2.1.5 Dust, Litter, Odor, and Vector Control Litter, odors, and vectors are not anticipated to be concerns at the Sutton CCR Landfill. The waste placed in the landfill does not attract vectors, and wind-blown material is not anticipated to be a problem. Odors are typically not a problem at CCR waste landfills. Dust control is addressed in the Dust Control Plan included as Attachment 1. Generally, dust control measures will be implemented when necessary, and will include at a minimum watering of dusty roads and exposed work areas. Other measures include physical measures such as fencing and/or berms, temporary covers like tarps, spraying dust suppressants, and modifying the active work area. Additionally, interim cover will be seeded within 7 days in accordance with Erosion and Sediment Control requirements. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 8 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill 2.1.6 Fire Control Geosyntec° corrsultants No open burning shall be permitted at the Sutton Onsite CCR Landfill. There are no explosive gas concerns with CCR, ash waste/sludge, or mill rejects; therefore, the threat of fire is considered to be minimal. Although it is unlikely, if a fire occurs at the landfill, the Station Control Room (phone number: 910-341-4754) shall be notified, and equipment and stockpiled soil shall be provided to control accidental fires. Sutton personnel will notify the local fire department which will be immediately dispatched to assist with fire control. Any fire that occurs at the landfill shall be reported to the Division within 24 hours and a written notification will be submitted within 15 days by the Station Sponsor for Landfill Operations. 2.1.7 Landfill Sequencing The Sutton Onsite CCR Landfill will be developed in se"eaee—hap ses, from Phase 1 through Phase 3. The three phases are subdivided into 11 cells which could be constructed sequentially (e.g., Cell 3 then Cell 4), in alternate order (e.g., Cell 3 then Cell 2 then Cell 4), or at the same time. Fef exaffiple, Phase 1 is subdivided into six eells. Phase 1 has mately five yeafs of life, Phase 2 has appfaxifaately 3 yeafs of life, and Phase 3 has , afld the life of a phase is dependent an disposal r-a4es. • 2.1.8 Waste Placement Waste generated at Sutton is transported from the CCR Basins and interim CCR stockpile areas to the landfill by using dump trucks and/or conveyor systems. C&D and LCID waste shall be stockpiled separate from CCR and will transported to the landfill using dump trucks. Upon reaching the active face of the landfill, the waste is dumped from the trucks which then exit the landfill returning to the interim waste storage areas. The interim waste storage areas, haul roads, and landfill are located within secured areas at Sutton. The landfill surface shall be graded to promote separation between surface water and contact water. The landfill surface shall be graded to promote contact water drainage to the contact water collection system (e.g., chimney drains). No waste shall be placed in standing water. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 9 December 2015 (Rev. 1) 2.1.8 Waste Placement Waste generated at Sutton is transported from the CCR Basins and interim CCR stockpile areas to the landfill by using dump trucks and/or conveyor systems. C&D and LCID waste shall be stockpiled separate from CCR and will transported to the landfill using dump trucks. Upon reaching the active face of the landfill, the waste is dumped from the trucks which then exit the landfill returning to the interim waste storage areas. The interim waste storage areas, haul roads, and landfill are located within secured areas at Sutton. The landfill surface shall be graded to promote separation between surface water and contact water. The landfill surface shall be graded to promote contact water drainage to the contact water collection system (e.g., chimney drains). No waste shall be placed in standing water. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 9 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 2.1.9 Compaction Requirements and Testing After the waste is placed on the active face, the waste will be placed in consecutive, approximate 1 -foot thick lifts that do not exceed a 10 -foot operational lift. Prior to compaction of an existing lift, the existing and new material should be adequately blended. In -Place Density and Moisture Content Testing In-place density and moisture content testing shall be performed at a minimum frequency of one test per 10,000 cubic yards (or one test per 270,000 square feet per 12 -inch thick lift). Waste shall be compacted to a minimum 95 percent of its Standard Proctor (ASTM D 698) maximum dry density. Compacted moisture content shall be within 5 percent of the material's optimum moisture content as determined by ASTM D 698. If field density tests indicate that the relative compaction or moisture content requirements are not met, the material shall be moisture conditioned and/or re -worked and re -tested until the compaction density and moisture requirements are met. The field density testing report should document any failing tests and re -work required to meet testing requirements. In-place density tests shall be performed using the Sand Cone Method (ASTM D 1556), Drive -Cylinder Method (ASTM D 2937), or Nuclear Method (ASTM D 6938). If the nuclear method is selected, a minimum of one comparison density test using the Sand Cone or Drive Cylinder method shall be performed for every five nuclear density tests, and correlations between the test methods shall be developed and reviewed by the Engineer. A sample of ash material shall be collected from each density test location and placed in a sealed container for subsequent field and laboratory moisture testing. A family of Proctor curves shall be developed for the on-site ash material as standard Proctor moisture -density tests are performed as a reference for the field density testing. A minimum of one (1) one -point field Proctor test shall be performed for each day of field density testing. Additional one -point field Proctors shall be performed if the material changes. A material change is defined when the maximum dry density of the referenced standard Proctor test varies by more than 2 pounds per cubic foot (pcf). If the estimated standard Proctor maximum dry density based on the results of one -point Proctor testing indicates that the maximum dry density varies by more than 5 pcf from the nearest representative standard Proctor moisture -density relationship, an additional bulk sample of ash material shall be obtained and standard Proctor testing shall be performed for the sample as a reference for the field density testing. Field moisture content testing shall be performed for each density test using the Direct Heating Method (ASTM D 4959). The Nuclear Method (ASTM D 6938) shall not be used for moisture content testing on the ash material. Comparison laboratory moisture content testing shall be performed using the Oven Method (ASTM D 2216), at an oven temperature GC5770\Operations Plan -Sutton LF-TR-Ol.docx 10 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants of 60 degrees Celsius. The laboratory moisture content shall control in the event of a discrepancy between laboratory moisture content and in-place moisture content. Laboratory Testing Laboratory moisture content testing shall be performed in conjunction with the field density testing as described above. The laboratory moisture content testing shall be performed using the Oven Method (ASTM D 2216), at an oven temperature of 60 degrees Celsius. Standard Proctor moisture -density relationship (ASTM D 698) testing shall be performed at a minimum frequency of one test for every 50,000 cubic yards of material placed. As previously mentioned, additional standard Proctor samples shall be obtained and tested if one -point Proctor testing indicates that the estimated maximum dry density of the material varies by more than 5 pcf from the nearest representative standard Proctor moisture -density relationship as determined by the one -point Proctor method. 2.1.10 Cover Requirements 2.1.10.1 Operational Cover Operational soil cover should be applied, as needed, for dust control and stormwater management. If needed, operational soil cover should be applied at a thickness suited to its purpose. For example, operational soil cover may be applied thinner to provide dust control and it may be applied thicker to tolerate erosion. Operational covers to provide dust control shall be as described in the Dust Control Plan in Attachment 1. Downdrains, tack -on benches, and chimney drains will be installed and extended as appropriate. Soil diversion berms will be used to direct water as appropriate. Waste will be covered with interim and final cover as applicable, in accordance with the following sections in this plan. Operational soil cover is not required, provided the Dust Control Plan included as Attachment 1 is followed. 2.1.10.2 Interim Cover A 12 -inch thick interim cover layer shall be placed on exterior slopes and areas where final grades have been reached and/or areas where waste placement will be inactive for 12 months or more. Interim cover will be seeded within 7 days in accordance with Erosion and Sediment Control requirements. Vegetation shall be removed and the interim cover soil shall be scarified or removed prior to placing any overlying waste. Fef at:eas whet:e waste plaeement will be inaetive for- 12 months or- more, inter-iffl soil eove 2.1.10.3 Final Cover GC5770\Operations Plan -Sutton LF-TR-Ol.docx 11 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants The final cover system for the Sutton Onsite CCR Landfill will be completed within 180 days following the beginning of closure activities unless otherwise approved by the Division. The final cover will consist of (from top to bottom): (i) 6 -in thick vegetative cover; (ii) 18 -in thick cap protective layer; (iii) geocomposite drainage layer; (iv) 40 -mil thick double -sided textured linear low density polyethylene (LLDPE) geomembrane; and (v) 6 -in thick intermediate soil cover/bedding layer. Should grading be required prior to closure, the final cover system (beginning with LLDPE geomembrane) may be installed directly on waste. The vegetative layer will consist of on-site soil suitable for maintaining grass cover and controlling erosion. Surface water that percolates through the vegetative layer and 18 -inch thick compacted soil layer will be collected by the geocomposite drainage layer. The cover system stormwater management structures will collect both infiltration and surface water runoff. The final cover will be vegetated with native grasses within six months following closure. Refer to the Closure/Post-Closure Plan for final cover specifications and maintenance and operations requirements (Attachment 2). 2.2 Leachate and Contact Water Management As previously described, the landfill has been designed to provide separation of contact water from non -contact water. Contact water will be treated as leachate; however, the method of conveyance varies depending on the contributing source of the contact water. Generally, leachate can be described as liquid which has percolated through the waste mass and is collected by the geocomposite drainage layer along the bottom of the landfill. Contact water can be described as being generated from the following sources: • Exposed waste within the landfill (Source 1); • Slope access roads surfaced with bottom ash (Source 2); and • Perimeter access roads between the point of landfill egress and the CCR Basins (Source 3). 2.2.1 Contact Water Source 1 Contact water source 1 consists of water which has contacted exposed waste within the landfill. Exposed waste within the landfill will be graded to drain towards vertical chimney drains which will then convey the contact water into the leachate collection system. 2.2.2 Contact Water Source 2 Contact water source 2 consists of water which has contacted the slope access roads. Slope access roads provide access from the perimeter access road to the active landfill face. The GC5770\Operations Plan -Sutton LF-TR-Ol.docx 12 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants slope access roads will be used as haul roads during operations and will be located at the final buildout slope access road locations. During operations, slope access roads may be surfaced with CCR; therefore, water runoff from the slope access roads will be treated as contact water. The slope access roads which terminate at the perimeter access road will convey contact water to contact water conveyance zones. Tack -on benches will extend parallel to the slope access road ditches to intercept non -contact water from up -gradient slopes. 2.2.3 Contact Water Source 3 Contact water source 3 consists of water which has contacted perimeter access roads between the point of landfill egress and the Sutton CCR basins. This definition of contact water addresses the potential for waste to be tracked onto perimeter access roads as trucks leave the active face of the landfill between the point of egress and the CCR Basins. CCR to be disposed of in the Sutton CCR Landfill will primarily originate from the onsite CCR basins; therefore, a wheel wash is not deemed necessary for landfill operations. However, care will be exercised to minimize CCR tracking outside of the landfill and CCR basins footprint. Additionally, upon closure of the Sutton CCR basins, haul roads and perimeter access roads will be mitigated accordingly. 2.3 Leachate Collection System (LCS) The leachate collection system has been designed to meet the performance criteria of providing less than 1 foot of leachate head on the liner system under normal operating conditions and conveying contact water ran -off generated by the 25 -year, 24-hour storm event. The leachate collection system generally consists of the following components: • Leachate collection system pipes and drainage layers within the landfill; • Sumps at the low points of each phase of the landfill; • Force main and appurtenant structures (pumps, valves, etc.); • Leachate storage tanks; and • Leachate load out facility. Each landfill cell is equipped with leachate collection system (LCS) pipes located directly above the geocomposite drainage layer that collect infiltration, chimney drain flows, and contact water flows. The LCS pipes convey leachate and contact stormwater flows by gravity to collection sumps for removal. Clean -outs have been provided at the ends of the leachate header pipes in the event that the leachate collection and removal pipes become clogged. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 13 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants Sumps are located at the low point of the landfill cells. Cells 1 through 11 will have one sump each, which will convey leachate to the leachate force main via side slope risers and pumps. Sutton CCR Landfill was designed with one dually contained leachate force main connecting each cell to the leachate storage area. Leachate from the landfill will be stored temporarily at the on-site leachate storage area. The on-site leachate storage area will consist of temporary or permanent above -ground leachate storage tanks with secondary containment. The leachate storage tanks will provide enough capacity to store 3 days of leachate generation, at the peak daily leachate generation rate for the landfill. Tanker trucks will transport leachate from Sutton to a wastewater treatment plant periodically for off-site treatment and disposal. The leachate storage area is located to the northeast corner of the Sutton CCR Landfill. 2.3.1 LCS Maintenance The maintenance of the leachate management system's physical facilities (e.g., high-density polyethylene (HDPE) piping, leachate storage area) and records will be performed by or under the direct supervision of the Owner. Visual observations of the LCS system performance will be made monthly to verify that the LCS is performing properly. Clean-out pipes are located on the LCS leachate lateral and header pipes. LCS pipes will be cleaned out by the use of a clean-out snake or high-pressure water flushing at least once a year, and the LCS piping will be camera -inspected on a 5 -year frequency or sooner if cleaning indicates a blockage in the leachate collection system pipes. A request to modify the frequency of clean-out and camera inspections may be granted by the Division based on consecutive inspection results and observed operating conditions. 2.3.2 LCS Record Keeping and Sampling Records will be maintained documenting the leachate line maintenance. A composite sample of untreated leachate will be sampled and analyzed at least semi-annually. The composite sample will be collected from the leachate storage area and analyzed for the same constituents in the approved monitoring plan. Results will be submitted to the Section concurrent with groundwater test results. 2.3.3 Leak Detection System (LDS) A leak detection system (LDS) has been incorporated into the design of the landfill. The LDS consists of a secondary 60 mil HDPE liner system overlain by a secondary GC5770\Operations Plan -Sutton LF-TR-Ol.docx 14 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants geocomposite drainage layer connected to a LDS sump. Flow collected in the sump will be transferred to the leachate storage area via the leachate force main. The LDS sump shall be equipped with a dedicated pump system. The LDS pump system contains one low -flow pump. The LDS pump system shall operate automatically based on level switches with a low level cutoff and high level run -start activation. Additionally, a high level alarm shall be in place which will also have a high level activation. See the table below for LDS specific sump operations levels. The LDS system control panels will be equipped with visual and audible alarms programmed to identify sump liquid levels. The alarms will be equipped with a test function. The management of the leak detection system's physical facilities (consisting of piping and flow meters) and records of monitoring will be performed by or under the direct supervision of Duke. 2.3.4 LDS Maintenance Periodic equipment maintenance shall be performed as recommended by the equipment manufacturer. Equipment maintenance will consist of checking pumps, flow meters, valves, connections, and other system equipment for leaks, corrosion, wear, scale buildup, improper functioning, and other improper operations. Appropriate corrective measures shall be taken when equipment is not operating properly. Observations shall be made weekly to confirm the proper LDS system performance. Weekly observations shall include, but not be limited to, checking pump function, verifying flow meter function, testing visual and audible alarms, and monitoring for leaks. Cleanout pipes are located at the ends of the LDS leachate header pipes. Leachate collection pipes can be cleaned by flushing with high-pressure water from a hose or by snaking in the case of severe blockages. 2.3.5 LDS Record Keeping and Monitoring Flow will be measured at the discharge of the LDS sump by a totalizing flow meter. The facility shall maintain records of monthly flow rate data from the LDS sump from the activation of the cell drainage system and until the waste height reaches approximately 40 feet. From that point, flow rate data shall be collected on a quarterly basis until landfill closure. Annual monitoring is required during the post -closure care period. If the liquid levels in the sump stays below the pump high level run -start (no pump flow) for more than 1 year, then flow rates can be recorded annually. However, if at any time during post -closure care the pump high level run -start level is exceeded on the semi-annual or annual schedules, the GC5770\Operations Plan -Sutton LF-TR-Ol.docx 15 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants facility must return to monthly monitoring, until such time as the liquid level remains below the pump high-level run start activation level for two consecutive months. The purpose of LDS monitoring is to monitor if the leakage rates have been exceeded. To determine if exceedances of the leakage rates have occurred, the facility must convert monitored data to an average daily flow rate for the cell (in gallons per acre per day, gpad). For example, the average daily flow rate in gpad is equal to the total monthly flow rate divided by the number of days in the month, divided by the area of the cell in acres. If a leakage rate is exceeded, then the Division must be notified. 2.3.6 LDS Response Action Plan The purpose of the response action plan is to describe the necessary course of action in the event the Initial Response Leakage Rate (IRLR) and/or the Action Leakage Rate (ALR) are exceeded. In the event either the Initial Response Leakage Rate and or Action Leakage Rate is exceeded, the following actions will be completed. 2.3.6.1 Initial Response Leakage Rate Exceedance The Initial Response Leakage Rate (IRLR) is 108 gallons per acre per day (assuming two 2 - mm diameter holes per acre); for the approximately 10 -acre cells of the Sutton CCR Landfill. Should the ILR be exceeded, the following steps shall be taken: 1. Review physical equipment (pump and flow meter) function and data to confirm flow readings. Review operations to evaluate where operating equipment may have contacted the landfill liner or how landfill operations may have influenced the exceedance. If the exceedance is confirmed, the cell LDS flow shall be recorded daily. Should the daily monitored LDS flow exceed the IRLR or ALR after the initial exceedance, operational responses may include: the reduction of active face area; grading to provide improved drainage; and/or, the addition of interim soil cover. 2. Within 14 days of identifying that a leakage rate has been exceeded, the facility shall contact the Division in writing. Daily LDS flow recording shall continue. Should none of the daily measured LDS flow rates exceed the leakage rate within 14 days of initial identification of the exceedance, monthly LDS flow averaging shall resume. 3. Within 30 days of identifying that a leakage rate has been exceeded, the facility shall submit to the Division a written preliminary assessment which shall include at a minimum: • the amount of the liquid exceedance including initial measurement and daily measurements, if necessary, to date; • likely sources of the liquids; • the possible leak location; • the possible leak size; GC5770\Operations Plan -Sutton LF-TR-Ol.docx 16 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants • the probable cause of the leak; and • an outline of the short-term actions being taken and planned. 4. To the extent practicable, evaluate the location, size and cause of the leak; and assess the potential for leakage escaping into the environment and its mobility. Leachate quality shall be sampled, including a chemical analysis of LDS fluids, to evaluate potential hazards (pH and RCRA metals). 2.3.6.2 Action Leakage Rate Exceedance The Action Leakage Rate (ALR) is 216 gallons per acre per day (assuming two 2 -mm diameter holes per acre); for an approximately 10 -acre cells at the Sutton CCR Landfill. Should the ALR be exceeded, the following steps shall be taken: 1. Review physical equipment (pump and flow meter) function and data to confirm flow readings. Review operations to evaluate where operating equipment may have contacted the landfill liner or how landfill operations may have influenced the exceedance. If the exceedance is confirmed, the cell LDS flow shall be recorded daily. Should the daily monitored LDS flow exceed the IRLR or ALR after the initial exceedance, operational responses may include: the reduction of active face area; grading to provide improved drainage; and/or, the addition of interim soil cover. 2. Within 14 days of identifying that a leakage rate has been exceeded, the facility shall contact the Division in writing. Daily LDS flow recording shall continue. Should none of the daily measured LDS flow rates exceed the leakage rate within 14 days of initial identification of the exceedance, monthly LDS flow averaging shall resume. 3. Within 30 days of identifying that a leakage rate has been exceeded, the facility shall submit to the Division a written preliminary assessment which shall include at a minimum: • the amount of the liquid exceedance including initial measurement and daily measurements, if necessary, to date; • likely sources of the liquids; • the possible leak location; • the possible leak size; • the probable cause of the leak; and • an outline of the short-term actions being taken and planned. 4. To the extent practicable, evaluate the location, size and cause of the leak; and assess the potential for leakage escaping into the environment and its mobility. Leachate quality shall be sampled, including a chemical analysis of LDS fluids, to evaluate potential hazards (pH and RCRA metals). GC5770\Operations Plan -Sutton LF-TR-Ol.docx 17 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill GeosynteC D consultants 5. When the ALR is exceeded, establish whether or not the unit should be closed or receipt of waste should be curtailed; and conclude whether waste should be removed from the unit for inspection, engineered controls, or repair of the liner and drainage system. Evaluate and prepare to implement what other short-term or long-term measures shall be taken to mitigate or stop any leaks according to the stage (early operations, middle operations, or closed) of landfill development. Within 60 days of identifying that the ALR has been exceeded, submit to the Division the results of the evaluation performed and any actions taken as described above, and any further measures planned. For as long as there is an exceedance of the action leakage rate, the owner or operator shall submit monthly reports to the Division summarizing the results of the remedial actions taken and further actions planned. 2.3.7 Contingency Plan The leachate storage tanks will be provided with water level instrumentation and controls in order to monitor and maintain sufficient storage capacity within the b at all times. A the design leachate storage capacity in the event of s*afm sttfges-(i.e., 35 -day storage contingency) combined with operational actions taken in advance of major storm events will provide for adequate leachate storage capacity under most conditions. Operational actions will include drawing down the levels in the leachate storage tanks as much as practical in advance of an anticipated storm or large rainfall event to maximize the dry storage volume available during the event. During and immediately after a storm event. leachate removal and storaize tank drawdown will be maximized to obtain low leachate levels within the storage area until leachate production levels return to normal. Other Contingencies, such as lining up alternate leachate transporters, alternate treatment facilities, installation of temporary cover systems to minimize infiltration, procurement of frac tanks for temporary storage, etc. will be maintained in the operational record. , and baeledp 2.4 Stormwater Collection Conveyance Stormwater that does not come in contact with waste will be treated as non -contact water. Non -contact water will be managed separately from contact water and may be used for dust control or other operational purposes. The stormwater collection system has been designed to pass the 25 -year, 24-hour storm event, and generally consists of the following components: • Surface water swales; • Downdrains; • Perimeter ditches; and GC5770\Operations Plan -Sutton LF-TR-Ol.docx 18 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill • Surface water basins. GeosynteC D consultants Interim cover will be placed over waste at the exterior side slopes. Swales will be graded into the side slopes to convey non -contact surface water from the exterior side slopes to downdrains. The swales and downdrains will be constructed and extended as operations progress. The downdrains discharge to perimeter ditches, which convey surface water to surface water basins located north and south of the Sutton CCR Landfill. An interim surface water basin will be constructed with Phase 2 along the southern portion of the landfill. Stormwater collection and conveyance measures will be inspected every 7 days and within 24 hours of rainfall events of 0.5 inches or greater, and maintained such that necessary repairs can be made as early as practical. 2.4.1 Stormwater Discharge The stormwater system at the landfill was designed to assist in prevention of the discharge of pollutants. Landfill operation shall not cause a discharge of pollutants into waters of the United States, including wetlands, that violates any requirement of the Clean Water Act, including, but not limited to NPDES requirements, pursuant to Section 402. In addition, under the requirements of Section 404 of the Clean Water Act, the discharge of dredged or fill material into waters of the state that would be in violation of the requirements shall not be allowed by landfill operations. Operations at the landfill shall not cause the discharge of a non -point source of pollution to waters of the United States, including wetlands, that violates any requirement of an area - wide or statewide water quality management plan that has been approved under Section 208 or 319 of the Clean Water Act, as amended. 2.5 Surface Water Basin Maintenance Requirements All stormwater features (e.g., diversion ditches, berms, risers, discharge pipes, contact water conveyance zones) will be inspected every 7 days and within 24 hours of rainfall events of 0.5 inches or greater, and documented monthly for signs of damage, settlement, clogging, silt buildup, or washouts. If necessary, repairs to stormwater control features will be made as early as practical. 2.6 Groundwater Monitoring Well Access Requirements Groundwater monitoring wells are located around the landfill perimeter. A readily accessible, unobstructed path shall be maintained so that monitoring wells may be accessed using four-wheel drive vehicles. Care must be taken around the wells to prevent any damage to the wells. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 19 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill 2.7 Landfill Gas Management GeosynteC D consultants Because of the nature of the waste to be placed in the Sutton CCR Landfill, the Owner does not anticipate that methane or hydrogen sulfide gas will be generated or that odor will be an issue during operations. Therefore, landfill gas monitoring and management is not proposed. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 20 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 3 EROSION AND SEDIMENTATION CONTROL Erosion and sedimentation control (E&SC) during landfill operations will consist of monitoring and repairing E&SC stormwater conveyance features and surface erosion as defined in this Operations Plan and the active Erosion and Sediment Control Plan. 3.1 E&SC Measures Monitoring and Maintenance Erosion control principles include: • Disturbing as little area as practical at any one time for landfilling operations. • Seeding/mulching of disturbed areas commencing as soon as practically possible. Employing erosion control matting or seeding and mulch on steep slopes and other erosion prone areas. • Use of earthen berms, hay bales, wattles, silt fences, riprap, or equivalent devices downgradient of disturbed areas, stockpiles, drainage pipe inlets and outlets, and at intervals along grassed waterways, until such time as permanent vegetation is established. • Placement of riprap at the inlets and outlets of stormwater piping. Erosion and sedimentation control structures include stormwater best management practice (BMP) systems, sediment basins, ash runoff basins, contact water conveyance zones, and channels. Stormwater BMP's, sediment basins, and ash runoff basins shall be inspected every 7 days and within 24 hours of rainfall events of 0.5 inches or greater. Sediment shall be removed from each structure when sediment accumulates to one half of the design depth. Sediment removal shall bring BMP's to their original design depth. The BMP's, sediment basins, embankments, spillways and outlets shall also be observed for erosion damage. Necessary repairs shall be made immediately. Trash or debris within the riser structures or outfalls shall be removed. Channels shall be observed for damage every 7 days and within 24 hours or rainfall events of 0.5 inches or greater. Riprap-lined channels and outlet protection aprons used to prevent damage to channel vegetation shall be observed for washouts. Riprap shall be added to these areas, as needed, to maintain the integrity of the structure. Embankment slopes shall be inspected for erosion every 7 days and within 24 hours of rainfall events of 0.5 inches or greater. The embankment slopes shall be mowed at least four times a year. The embankment slopes shall be refertilized in the second year unless vegetation growth is fully adequate. Damaged areas shall be reseeded, fertilized and mulched immediately. Seeding, fertilizing, and mulching shall be in accordance with the GC5770\Operations Plan -Sutton LF-TR-Ol.docx 21 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants North Carolina Erosion and Sedimentation Control Guidelines and in accordance with the active Erosion and Sediment Control Permit. Ground stabilization shall be performed within 7 calendar days on perimeter areas and slopes greater than 3H: IV. Ground stabilization shall be performed within 14 calendar days in other areas. Seedbed preparation, seeding, soil amendments, and mulching for the establishment of vegetative ground cover will be applied in accordance with North Carolina Erosion and Sedimentation Control Guidelines. 3.2 Surface Erosion Monitoring Adequate erosion control measures shall be established to help prevent sediment from leaving the site. Channels will be observed once every seven days and within 24 hours after any rainfall event of 0.5 inches or greater. Slopes will be periodically checked for erosion and vegetative quality, fertilized, and mowed. A slope or portion thereof shall be identified as needing maintenance if it meets any one of the following conditions: • Exposed waste on exterior slopes; • Areas of cracking, sliding, or sloughing; or • Areas of seepage. Slopes identified as needing maintenance shall be repaired as soon as practical and as appropriate to correct deficiencies. Repair activities may include re -dressing the slope, filling in low areas, and/or seeding. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 22 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 4 VEGETATION MANAGEMENT Within six months after final termination of disposal operations at the site, the area shall be stabilized with vegetation as required by design drawings and Closure/Post-Closure Plan. Temporary seeding will be applied, as required. Temporary erosion control measures may be required until permanent cover is established. Mulching, until a vegetative cover is established, can stabilize areas where final grades have been reached. Soil mulching can be achieved using wood chips, straw, hay, asphalt emulsion, jute matting, and synthetic fibers. Mulches allow for greater water retention; reduce the amount of runoff, retain seeds, fertilizer, and lime in place; and improve soil moisture and temperature conditions. 4.1 Temporary Seeding Temporary seeding and soil amendments will be applied as follows: Common Name Botanical Name Rate Purpose Optimal Planting Dates Warm Season German Millet Setaria Italica 10 Nurse Crop 4/15-8/15 Cool Season Rye Grain Secale Cereale 10 Nurse Crop 8/15-4/15 Big Bluestein Andropgon Geradii / 7 Primary 12/1 -511 Earl Stabilization Panicum Virgatum / Switchgrass Blackwell, Shelter, Or 3.5 Primary 12/1-4/1 Carthage Stabilization Virginia Wild Rye Elymus Virginicus 6 Primary 2/15-3/20 Stabilization And 9/1 - 11/1 Indian Woodoats Chasmanthium 2.5 Primary 2/15-3/20 Latifolium Stabilization And 9/1 - 11/1 Soil Amendments Pounds Per Acre Agricultural limestone 2,000 Fertilizer (10-10-10) 1,000 Mulch 4,000 Note: Soil amendments are for all -season temporary seeding applications. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 23 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill 4.2 Permanent Seeding GeosynteC D consultants Permanent seeding will be utilized to reduce erosion and decrease sediment yield from disturbed areas, to permanently stabilize such areas in a manner that is economical, adapts to site conditions, and allow selection of the most appropriate plant materials. Seeding recommendations from Tables 6.11a, 6.1 lb, and 6.11c (NCESC Design Manual, 2013) list herbaceous plants recommended for use as nurse crops for immediate stabilization and primary crops for initial and long-term stabilization. Nurse crops are expected to develop in two to five weeks and, with adequate maintenance, be an effective method of soil stabilization for a period of six months to one year. Primary crops develop over a three- week to one-year period and are effective up to three years with a well-defined maintenance program. These tables were utilized to select a nurse crop and primary crop seed mix best suited for site conditions. Permanent seeding may be applied to landfill side slopes, drainage channels, as indicated on the Permit Drawings and in accordance with the Technical Specifications. Soil Amendments Pounds Per Acre Agricultural limestone 4,000 Fertilizer (10-10-10) 1,000 Mulch 4,000 Note: Perform soil test to determine proper soil amendments; if not available, use the quantities above. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 24 December 2015 (Rev. 1) Operations Plan GeosynteC D L. V. Sutton Energy Complex Onsite CCR Landfill consultants 5 LANDFILL CLOSURE The Sutton CCR Landfill will be closed in accordance with the design drawings and Closure/Post-Closure Plan. The Closure/Post-Closure Plan outlines the sequence for closing the landfill and the post -closure maintenance activities. Closure is designed to minimize the need for long-term maintenance and to control the post -closure release of contaminants. Closure activities may be revised as appropriate for materials, specifications, technology advancements, or changes in regulations at the time the landfill is closed or in post -closure. In general, the landfill development is designed so that final cover can be established as soon as possible. GC5770\Operations Plan -Sutton LF-TR-Ol.docx 25 December 2015 (Rev. 1) Operations Plan L. V. Sutton Energy Complex Onsite CCR Landfill REQUIRED REGULATORY SUBMITTALS GeosynteC D consultants Submittal Requirement Reporting/Action Frequency Maintain a record of all monitoring events and analytical data in accordance with the Groundwater Groundwater Monitoring Plan. Reports of the Monitoring analytical data for each water quality monitoring Semiannually Reports sampling event shall be submitted to DENR Division of Waste Management (DWM) in a timely manner. Tons of waste received and disposed of in the landfill shall be reported to the DWM and to all Annually Annual Tonnage counties from which waste was accepted on Must submit no Reports forms prescribed by the DWM. Refer to the later than August 1 Permit to Operate for annual reporting each year requirement information. Per North Carolina G.S. 130A -309.09D (c): 10 -year plan • A 10 -year waste management plan shall prepared every 10 be developed for this landfill and years 10 -Year Waste submitted to DWM. 10 -year plan Management g • The plan shall be updated and submitted updated every 3 Plan to DWM at least every three years. years • A report on the implementation of the plan is required to be submitted to DWM Implementation by August 1 of each year. report annually GC5770\Operations Plan -Sutton LF-TR-Ol.docx 26 December 2015 (Rev. 1) ATTACHMENT D UPDATED PERMIT DRAWINGS 10 O I L J Y J V I V 0 L C x 10 F my 0 i� 1 I 2 I 3 4 I 5 I 6 I 7 I 8 LEGEND — — PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND, 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTES 1 AND 2) -------------------------- AERIAL MAPPING LIMIT (NOTE 6) — — DRAINAGE CENTERLINE (NOTE 2) —XXXXXXX)x FENCE LINE (NOTE 2) GRAVEL / DIRT PATH (NOTE 2) x 191.1 SPOT ELEVATION (NOTES 1, 2, AND 4) X 193.4 SPOT ELEVATION ESTIMATED (est.) IN OBSCURED AREAS (NOTES 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O O X UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTES 2 AND 3) UTILITY POLE (NOTES 2 AND 3) OE OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) 1 1 2 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 3 N 0 300' 600' SCALE IN FEET FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 1 6 ) LAY OF LAND AREA (LOLA) BOUNDARY BOUNDARY r A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP TITLE: Geosyntec" considtantS OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 TOPOGRAPHIC MAP (� DUKE ENERGY PROGRESS PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 ,A GAR `■, dQ .Fes g�©. �',y DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02PO20 42284 SIGNATURJ Q REVIEWED BY: MAO DRAWING NO.: • ��'GINE�. •: G�l�r � ATE W"" 11! pAM ��`�� APPROVED BY: VMD DATE ``f+lriirlll+ • OF 3 5 7 8 0 C 0 E F 0 C I E 0 M 0 0 0 U U c:7 0 0 U z Q U J a J 0 Z Q Lu cn 9 F Z 0 F - Z) } U of w z Lu �w Y U 00 aD F ww z� }U o� ELIY 1 1 2 1 3 14 1 5 (TO BE RELOCATED) N. N 0 200' 400' SCALE IN FEET FOR PERMIT ONLY, NOT FOR CONSTRUCTION 1 2 3 4 5 1 6 7 8 LEGEND — — PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTE 1 AND 2) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) — — DRAINAGE CENTERLINE (NOTE 2) -XXX—XX—XX—X- FENCE LINE (NOTE 2) GRAVEL / DIRT PATH (NOTE 2) X 191.1 SPOT ELEVATION (NOTES 1, 2, AND 4) X 193.4 SPOT ELEVATION ESTIMATED Mesta IN OBSCURED AREAS (NOTES 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O 0 x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) DE OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) FEMA FLOOD ZONE AE (NOTE 7) w w WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) WETLANDS - SURVEYED (NOTE 9) HAND AUGER CONE PENETRATION TEST IZf SEISMIC CONE PENETRATION TEST GEO-PROBE BORING ■ PIEZOMETER MONITORING WELL WATER SUPPLY WELL ® ABANDONED WATER SUPPLY WELL A STAFF GAUGE NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. WETLANDS WERE OBTAINED FROM FIELD DELINEATION BY GEOSYNTEC AND PROVIDED IN A DRAWING DATED 4 MARCH 2015 BASED ON FIELD SURVEY BY WSP. A DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD I REVDI ATE DESCRIPTION DRN APP TITLE: Geosptec" consultants OF INC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS EXISTING CONDITIONS PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 �'CA1Q+ r+r .t r ! `r 0�SjO •�s�, DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P030 }42284 *,/SIGNATU9�. REVIEWED BY: MAO DRAWING NO.: � DATE t' f' 1' DAM,"'`' APPROVED BY: VMD 3 _O F 35 7 1 8 0 C 0 E F 0 1 w F ?306 000 vv v � x E 0 h� 25 N 30 = v 3 4 5 o F,5( ) o o � 5 PRW-1 o ODW-14 O DW -1 M' 2-3, 0 08 z v w 20 �wJ w✓ N,11 /VV N 1.1 ODW-8 a ODW-7 3DW-10 O PRW-4 ODW-11 F? 3'p cv O PRW-3 �5 °0p 3 PRW-7 ODW-13 / NHC-SW11 00 � o rn1 2 O NHC-SW3 OPRW-6 \ 0 �s N I ODW-9 ONHC-SW4 0 N N N c O 25 20 I �N OPRW-5 \ PROPOSED LANDFILL FOOTPRINT ��ODW SITE ENTRANCE AERIAL MAPPING LIMIT (101.11 ACRES) ° (NOTE 6) _ Nf N B k ,s.sk xt7., DW -2s y — Aa" — — —No" X 14-,_.+--_–y"DW-3 -4 '� N DW -5 _ — — PROPERTY BOUNDARY _ o o -i' �' Jr ^i �. 19.3-. _"'s�1U.8 8.x __ --- �_ — — — _– — — �\ DW -1,b MW -11 ,� �\�\\n x k a MW -31 2° Z° MW -12 r_ / ti ti a 27. k25.7 nk 14.8 xt7.6 — 20.6 y -- -- -- PZ-6D - �.�.� �n PZ -6S 20--���PZ-14' a tik a N y am'' Y N n ° x x" ` — N o a BMW -33C z N k y' / ! - k � PZ -8 F2' �x,U ^■ LA -PZ -2■ PZ -23 xPZ LA1-SPT-1 ■ PZ -18 _ ° I■PZ-3X o as /��\\ A k �PZ-16 / " vx X y k o zo zo o X • x `\\� \ �L — — — — — — — — — — x N (v - z o LA -SPT -6 a o 0 0 0 Nk ti �, � MW 32C LA -PZ -4 x° o / a • j IV I X N L x nN kN a ■ ry O N ^ X p ry _ kry. k o O� � 20 PZ -5X - °ry `\ k X ° k LA -PZ -3 k a QX y kN k ■ I u • o y k �'O�O ^o c k o ��3° ■ PZ '9 \ x �� a 2° N"� LSA -PZ -5 PZ -1X XN. ■PZ -13 k PZ -17 SPT -11 k 3 MW -24B z° ry k X �x x o �o�o{x c'> X lffl I X N ^: X 4 XN � a � N. � k k o N k n k PZ -1 9 ; LA -SPT -3 X h , 1 x oxf ti "ry'X` X x I 2X— N �N �Y ° y. ■ N .1. tik LX�S1�T—roi '- ■ k fW-x6 k—�X �2° P-97,/■PZ-7 PZ -11 {PZ -15 �BOMAWT-3LAUNCH ACCESS �ROADS PZ - MW -24C -SPT-4 (TO BE RELOCATED) �(BMW-35C — PZ -1 LA -SPT -2, � MW 23C fJ M!�W -y28yB fP�-2PZ-4� MW -22C �v oOO�omo OoO pp0o�y�Oo o o OQ a p Ic BMW-7CXXn MW 3B qpz-los) < > — \ I k Iy P, / � FROMWAl. �' i i 1 1t i t • `Jj 11 • - ^ \ ��` �l\ % `1�G � � � ` � � 1111, • � � � � '� �—� �� 1 f d 1 i r omml �1 OF OLA) BOUNDARY �I If lit 1 p • ► �I ��._ /� �,� �\ ■PZ -4B, \y k k yk y hk 16A 7 GP -14 SGP -15, �.MW-14 x o G_P-GP-Xo N N o 444��r y 7 a yX M b. ■PZ -101 '` k k SCPT-6 k x o n SGP -2 n k ■PZ-5B'Z-5A X ASG 1 a Q `� Al / ^. �° C'. 1.. o V _ - a. /,. " � • o k kSCPT-5A w w SPT -6 0 =�1z 5° ak GP-13GP-3 x ° SGP -1 SGP X k X k •SG - 3 � � `f PZ -6A' �, PZ -INT ' _ „ M J k � k o 0 C� � MW -15 Sf w �\ SGP -12 n ° PZ -105 P� CD \ 20 � � ,.� SPT-9/PZ-INT � X <. a �- � � o HA -004 -PZ -105 �, o `� °� �� 1�a � PZ -613 1. k o x a °° \ G w op�`� w `� �t BMW -15D \ w o ? k n X k o x SPT -13 ti � o po bii� k h a �N o MB -1 v B-3�� x m / n CPT -5a k a k x X X HA -3-1 "o k w k/ X �J \ ,/- ' PZ -108S HA -004-B-3 THA -3-2 k / k e <, 6 a o k" PZ -108D / w k J IJ COOLING POND SCPT 3AI� F - MW -13 SPT -1 , PZ -104 = ��.� HA -004 -PZ -106 MW -13D \ �` o. m o my. % -WG P-8 HA -005 -PZ -104 k\ GP 5 r ti m i�' �''',-PZ -,106% LEGEND NOTES: E — — PROPERTY BOUNDARY FEMA FLOOD ZONE AE (NOTE 7) 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. E ELEVATIONS ARE BASED ON NAVD88. EXISTING GROUND ELEVATION FEMA FLOOD ZONE X (NOTE 7) A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF REV DATE DESCRIPTION DRN APP w w WETLANDS - NATIONAL WETLAND INVENTORY IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON EXISTING GROUND ELEVATION (NOTE 8) THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. CONTOURS IN OPEN AREAS (NOTE 1 AND 2) Geosyntec" DUKE a WETLANDS -SURVEYED (NOTE 9) 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, ---------------------- AERIAL MAPPING LIMIT (NOTE 6) IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N Lo HAND AUGER RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR consultants OF NC, PC — — DRAINAGE CENTERLINE (NOTE 2) CONSTRUCTION. 1300 SOUTH MINT STREET, SUITE 410ENEInk 3% Y Q oCONE PENETRATION TEST CHARLOTTE, NC 28203 USA X X X X IE XX—x— FENCE LINE (NOTE 2) 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' PHONE: 704.227.0840 PROGRESS !S} SEISMIC CONE PENETRATION TEST COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 LICENSE NO.:C 3500 — — — — — — — — — — — GRAVEL / DIRT PATH (NOTE 2) APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET TITLE: - - - - - - - - - - - � GEO-PROBE ONLY. SITE CHARACTERIZATION PLAN o X191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY BORING 193.4 SPOT ELEVATION ESTIMATED WSP IN JUNE 2014. PROJECT: a X (esO IN OBSCURED AREAS (NOTE 1, 2, AND 4) ■ PIEZOMETER CONSTRUCTION PERMIT APPLICATION DRAWINGS 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY ONSITE CCR DISPOSAL FACILITY ILLZ TREE /BRUSH LINE (NOTE 2) MONITORING WELL DATED APRIL 2007 AND FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND Lu SURVEY DATED MARCH 2015 (APHY WITHIN THE FLOWN IAL MAPPING PAPRILI 2 14) AND WEMIT WERE RE OBTAINED FROM WSP. SITE: L.V. SUTTON ENERGY COMPLEX O O x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (3 WATER SUPPLY WELL o F (NOTE 2 AND 3) 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND WILMINGTON, NORTH CAROLINA 28401 F o ® ABANDONED WATER SUPPLY WELL ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 UTILITY POLE (NOTE 2 AND 3) JUNE 2006.DESIGN BY: VMD DATE: AUGUST 2015 AL STAFF GAUGE OE OVERHEAD ELECTRICAL TRANSMISSION LINE �(M CAgo [If 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH ;��Ey� ......jessj© /,y'•_ DRAWN BY: JWO PROJECT NO.: GC5770 AND WILDLIFE SERVICE WEBSITE. '�' w WATER (NOTE 5) 9. WETLANDS WERE OBTAINED FROM FIELD DELINEATION BY GEOSYNTEC AND PROVIDED INA = CHECKED BY: VMD FILE: GC5770.02P040 ASH BASIN/COOLING POND BOUNDARY DRAWING DATED 4 MARCH 2015 BASED ON FIELD SURVEY BY WSP. _ 4228` � , (APPROXIMATE) SIGNATIJI� ; ` �` REVIEWED BY: MAO DRAWING NO.: Z� FOR PERMIT ONLY NOT FOR CONSTRUCTION ��� o al ,, M. DAM ,��` APPROVED BY: VMD OF 35 o �;GINeV b Y DATE �r,,KiitMloo 1 2 3 4 5 6 7 8 0 W F ?306 000 1 1 2 0 h� 25 N 30 v 3 00 � N F2 308 000 4 1 5 o0 ODW-14 O DW -15 (PRW-1) o �s M 1.1 3DW-8 ao ODW-7 W �00 3 7 _\Ij F? 3'p O PRW-3 �5 Op0 �-/ 3 PRW-7 w � _ ODW-13 / NHC-SW11 00 \-3PRW-4� \ ONHC-SW3 500' WELL BUFFER \\ / / / \ \ O DW -11 - .� � \� 3PRW-6 500' WELL BUFFER Cn / \ 500'WELLBUFFE / 1000 oLo O00, NHC-SW4 \ s \ o ODW 9' rQ // \\ 25 \0 a0 I I OPRW-5 N \ / �5 \ ^� LIMIT OF DISTURBANCE ODW �o SITE ENTRANCE AERIAL MAPPING LIMIT PROPOSED LANDFILL FOOTPRINT (NOTE 6) - - - - - (101.11 ACRES) - _ _ 15. 16.9,E k 1� T h L - - - _ x DW-2_�� DW -3 r OE A,4.7 DW -4 -- -^- -----I'll I- N - --- - 2 �,. ✓ �� �\ \ \� k x k .__� k 19.3 - = Z -'[u.8 a k NY�Mt�- -.� - - - - - - - - - - / \ �; 6.s Z° k S ,.--. � � �, ONHC SW DW -1 W-11 _ - a BMW -31 B^ MVV -12 \ �i Nk k� PROPERTY BOUNDARY ^ �. x MW 1 ' m I \ !14.8 17.6 ° X 1 \ % p' x 25.7 .i - zos o i PZ -61D PZ -14 - - - - - - xr ac - 2° N �J--- - ----- N' M - - - - - - - - - ^ O ^W 33C MLA-PZ-2■PZ-23 I : �. X• x, I D /� LA -SPT -5 I x N ■PZ -18 I i I k �,• ;��: z°.J x ■PZ -25 i x I I I LA -SPT -6 _ _ _ - - - - I X I I I ',' ' ■ ■ LA -PZ -4 �1 i PZ -5X .X.:' -I LA -PZ -3 I I I� I ■ I MW -32C ko o NORTH SURFACE ` (I ■ ■ PZ -9I I k Al I I a I I/LIP' s WATER POND :PZ -1X I ■PZ -13 I MW -24B I : x�N I I I x o{x (11.85 ACRES) I ■PZ -17 _k +SPTt11 I s' ^ • • , I �' � 2 I k ^k` O PZ -19 I 4 I LA -SPT -3 I O MW 10 I 11 3° 00o o ^k F107- :7 PZ -11 f�Z-15 ■ O I I I k b N: 8O I ■PZ -27 y ®a Q I I ♦ VW -35C MW -2f CLIA -SPT -4 : � � I ^ Y k ----------1 LA -PZ -1 LA -SPT -2 - :•.� a oho I °-tA=�PT-7---1------------1 I /R I BMW -23C I BMW -28B Om P I I � x I I �x ti LEACHATE, --------- ------- .. Ih �,iC k P W 3 o0 0 C - PZ -4X PZ -10D k^ - - =-- - �rr�2r------ T ---'--- J----��-------�- r _ STORAGE AREA - �{--' - �I #��/_3B MW -22C BMW -7C �- - - `; �✓ - - SPT 10- - PZ -26. k - - - - - - �t1v- 3A - ! MW -22B �M x _ - - - k 143 `MW -10 �._-PZ-20 MW -34C' �"� ',� - - - - _ W -2A - - - MW -28C ko �° 5.4 ,PERIMETER-- PERIMETER= 8� " - - - _ �i ,s.TMW-34B BMW -6C---- --- --- ----- - --- ��� ^ x 1 .ACCESS ROAD t SWALE N iPZ-24 6.3 N N --- !� x �8 �■ PZ -28 : M W 2A x x l M W-7 B Nx h ` / o ��MW-21C 04 0 p I - - - - - 5 - - k // ,,�x MW -26 x.; l2°a SOUTH SURFACEk . a _ = 0 ` - - - - - - - - - - - _ k ^ N MW -2C \ I x WATER POND x 1 PZ -2B- GWPZ-2B�-■PZ-1B n "1984 ASH BASIN k ■GWPZ-4B1 MW -1A (10.54 ACRES • 50' TRANSMISSION z° °: GWPZ-3B BOUNDARY_ LINE BUFFER SGPT -2. PZ -1A 3 �5N I - PZ -103• -PZ -103 11 V F 0 LU z 0 0 K O Construction Sequence Approximate Waste Footprint (acres) Estimated Airspace Available for Waste Disposal (cy) Estimated Lifetime (years) - - Cell 3 10.1 840,787 0.9 EXISTING GROUND ELEVATION Cell 4 9.2 810,807 0.8 Cell 5 8.9 766,286 0.7 Phase 1 Cell 6 9.0 806,715 0.7 Cell 7 9.0 818,223 0.8 Cell 8 9.9 902,372 0.9 Cell 1 7.1 457,857 1.2 Phase 2 Cell 2 7.9 549,967 1.3 Cell 9 10.0 916,989 1.5 Phase 3 Cell 10 9.5 1,038,598 1.5 !ZI Cell 11 10.5 840,385 1.6 Totals 101.1 8,748,987 11.9 ■GW.11 - - 40 4° - SPT -4 _ $CPT -3 MW -1B" CPT -6A � � \ I °2 � PZ -1 B 0 9MW 18 °( I _ � �l -, MW -17 BMW -27C 1971 ASH BASIN I a k BOAT LAUNCH ACCESS ROADS �N x x M j X x IxSCPT-4 BOUNDARY i \ k (TO BE RELOCATED) _ p x o x 15 40MW-36C x N I'\� -Ir S�SCPT-1 , °`' �_� �, _ JEDR-5 _ � ° - � " - SPT -7 70\ I CPT -4 tik= \ PZ -102 x �k �N °e x M X ^ Mk SPT -14 �� ^ \ MW -16D -� L LAY OF LAND AREA \ x x \ (LOLA) BOUNDARY _b ^ k w �� k o a k _ , �. SG - 4 CPT -7A x x xhN. a h' CPT -4A ^ z o GP -17 GP -16 GP -6 "k x o x Ala h QV " h° kGP-14 MW-1=� ■PZ -4B k x x Gh _P -16A -WGP-15, SGP-7 ^ xo h ■PZ -101 x k kSGPT-6 x k o � x ■ PZ-5B'Z-5A \ SG 1 a Q Gp k k "x k x SGPT -5A '° k (I( a v x - 4 y MB -2 -OSP` _�� 5° •SG "x v -WGP-3 I*GP-1 �x GP -13 oZITQSGP x kk k MW -15 -3 PZ-6-OSPT-9/PZ-INw SGP -12 PZ -105 20 ^. k x a a o HA -004 -PZ -105 o k tet, 1 ■PZ -6B, k o x �° ���0 w v� BMW -15D o \ �_;� k x a x k//� / x � � m �. k 2 a x < �1 .wGP-10 4GP-11, ,SPT COOLING POND RCPT -5 a k PZ -104 �SHA-005-PZ-1_074* lJ IV ° PZ -108S HA-004-BJ-�6 HA -3-2 k� k �" PZ -108D w SCPT 3A!c SPT-1� ` MW -13/ SPT- 8 _.. ��_v ' '��k� �r tio�5 � '� % SGP -8 HA-004-PZ-106/,o� MW -13D -WGP-5 ` k PZ -106- �� NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. WETLANDS WERE OBTAINED FROM FIELD DELINEATION BY GEOSYNTEC AND PROVIDED IN A DRAWING DATED 4 MARCH 2015 BASED ON FIELD SURVEY BY WSP. FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 1 6 A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosyntec" DUKE consultantsOF NC, PC ENE1nk%','w3%vT 1300 SOUTH MINT STREET, SUITE 410Q CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 _E: SITE DEVELOPMENT PLAN >JECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 Jti1 CA,go 0 *eS5jp�9 n' ; DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P050 42284 - SIGNATkib ` REVIEWED BY: MAO DRAWING NO.: SAE , M- flAM '*. APPROVED BY: VMD 5 35 DATE '�+.ilii.!......' OF 7 8 0 i C 0 E F LEGEND - - PROPERTY BOUNDARY FEMA FLOOD ZONE AE (NOTE 7) EXISTING GROUND ELEVATION FEMA FLOOD ZONE X (NOTE 7) CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) w w WETLANDS - NATIONAL WETLAND INVENTORY EXISTING GROUND ELEVATION (NOTE 8) CONTOURS IN OPEN AREAS (NOTE 1 AND 2) WETLANDS -SURVEYED (NOTE 9) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) HAND AUGER - - DRAINAGE CENTERLINE (NOTE 2) CONE PENETRATION TEST -XX -X XIXX-X_ FENCE LINE (NOTE 2) !ZI SEISMIC CONE PENETRATION TEST GRAVEL / DIRT PATH (NOTE 2) GEO-PROBE X 191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) BORING X 993.4 SPOT ELEVATION ESTIMATED (est.) IN OBSCURED AREAS (NOTE 1, 2, AND 4) ■ PIEZOMETER TREE / BRUSH LINE (NOTE 2) MONITORING WELL O O X UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (3 WATER SUPPLY WELL (NOTE 2 AND 3) ® ABANDONED WATER SUPPLY WELL UTILITY POLE (NOTE 2 AND 3) AL STAFF GAUGE OE OVERHEAD ELECTRICAL TRANSMISSION LINE DISPOSAL AREA WATER (NOTE 5) SURFACE WATER PONDS ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) LEACHATE STORAGE AREA RCPT -5 a k PZ -104 �SHA-005-PZ-1_074* lJ IV ° PZ -108S HA-004-BJ-�6 HA -3-2 k� k �" PZ -108D w SCPT 3A!c SPT-1� ` MW -13/ SPT- 8 _.. ��_v ' '��k� �r tio�5 � '� % SGP -8 HA-004-PZ-106/,o� MW -13D -WGP-5 ` k PZ -106- �� NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. WETLANDS WERE OBTAINED FROM FIELD DELINEATION BY GEOSYNTEC AND PROVIDED IN A DRAWING DATED 4 MARCH 2015 BASED ON FIELD SURVEY BY WSP. FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 1 6 A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosyntec" DUKE consultantsOF NC, PC ENE1nk%','w3%vT 1300 SOUTH MINT STREET, SUITE 410Q CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 _E: SITE DEVELOPMENT PLAN >JECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 Jti1 CA,go 0 *eS5jp�9 n' ; DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P050 42284 - SIGNATkib ` REVIEWED BY: MAO DRAWING NO.: SAE , M- flAM '*. APPROVED BY: VMD 5 35 DATE '�+.ilii.!......' OF 7 8 0 i C 0 E F 1 I 2 I 3 4 I 5 I 6 I 7 I 8 GRADES SHOWN ON THIS SHEET 24" PROTECTIVE SOIL LAYER 0 %/12" 10 i i i i i i i -5 CM/S COMPACTED SOIL LAYERS/� NOT TO SCALE c x NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. ) F23l0 000 (LOLA) BOUNDARY i_ ' BOUNDARY r A DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD I REV DI ATE DESCRIPTION DRN APP N 0 300' 600' SCALE IN FEET TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS TOP OF SUBGRADE GRADING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 +`W'1 IP1110" ;`�,C79�F SS.. DRAWN BY: JWO PROJECT NO.: GC5770 ;'Q Irmp� [] CHECKED BY: VMD FILE: GC5770.02PO60 L • 4 84 _ SIGNATClR REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION��+G'A{��k, �, ',` �` APPROVED BY: VMD OF 35 DATE 'f'Is 111'""'1 ' 4 5 6 7 8 0 c 0 E F LEGEND E — — PROPERTY BOUNDARY FEMA FLOOD ZONE AE (NOTE 7) EXISTING GROUND ELEVATION FEMA FLOOD ZONE X (NOTE 7) CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) w w WETLANDS - NATIONAL WETLAND INVENTORY EXISTING GROUND ELEVATION (NOTE 8) o CONTOURS IN OPEN AREAS (NOTE 1 AND 2) 0 80 PROPOSED LANDFILL CONTOUR ---------------------- AERIAL MAPPING LIMIT (NOTE 6) U — — DRAINAGE CENTERLINE (NOTE 2) o —X X X X IE XX—x— FENCE LINE (NOTE 2) 0 Lo GRAVEL / DIRT PATH (NOTE 2) U----------- ---------- 0 0 X191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) Q U X 193.4 SPOT ELEVATION ESTIMATED J IN OBSCURED AREAS (NOTE 1, 2, AND 4) a TREE / BRUSH LINE (NOTE 2) uj cn O O UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS o F (NOTE 2 AND 3) Z 0 UTILITY POLE (NOTE 2 AND 3) } 0 ui of OVERHEAD ELECTRICAL TRANSMISSION LINE W ,�, Y WATER (NOTE 5) U o ASH BASIN/COOLING POND BOUNDARY w w (APPROXIMATE) Zw U� 0 ❑ Ka O y 1 2 3 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. ) F23l0 000 (LOLA) BOUNDARY i_ ' BOUNDARY r A DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD I REV DI ATE DESCRIPTION DRN APP N 0 300' 600' SCALE IN FEET TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS TOP OF SUBGRADE GRADING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 +`W'1 IP1110" ;`�,C79�F SS.. DRAWN BY: JWO PROJECT NO.: GC5770 ;'Q Irmp� [] CHECKED BY: VMD FILE: GC5770.02PO60 L • 4 84 _ SIGNATClR REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION��+G'A{��k, �, ',` �` APPROVED BY: VMD OF 35 DATE 'f'Is 111'""'1 ' 4 5 6 7 8 0 c 0 E F 0 c x 1 I 2 I 3 4 I 5 I 6 I 7 I 8 i� GRADES SHOWN ON THIS SHEET 24" PROTECTIVE SOIL LAYER 10-5 CM/S COMPACTED SOIL LAYERS NOT TO SCALE NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. ) F23l0 000 (LOLA) BOUNDARY BOUNDARY r A DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD I REV DI ATE DESCRIPTION DRN APP N 0 300' 600' SCALE IN FEET TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS TOP OF LINER GRADING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 oww l/ri i'�r �iryr J i jlo qoz 0 iS tifes'- DRAWN BY: JWO PROJECT NO.: GC5770 • 9 CHECKED BY: VMD FILE: GC5770.02PO70 42294 = SIGNATUR Q ` REVIEWED BY: MAO DRAWING NO.: �• �NGIN�E�' ' G�` r FOR PERMIT ONLY, NOT FOR CONSTRUCTIONDATE ,�,,,.. APPROVED BY: VMOF D 7 35 ii'rrrii���r+`' 4 5 6 7 8 0 c 0 E F LEGEND E — — PROPERTY BOUNDARY FEMA FLOOD ZONE AE (NOTE 7) EXISTING GROUND ELEVATION FEMA FLOOD ZONE X (NOTE 7) CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) w w WETLANDS - NATIONAL WETLAND INVENTORY EXISTING GROUND ELEVATION (NOTE 8) o CONTOURS IN OPEN AREAS (NOTE 1 AND 2) a 80 PROPOSED TOP OF LINER CONTOUR ---------------------- AERIAL MAPPING LIMIT (NOTE 6) U — — DRAINAGE CENTERLINE (NOTE 2) o —X X X X IE XX—x— FENCE LINE (NOTE 2) 0 Lo GRAVEL / DIRT PATH (NOTE 2) U----------- ---------- 0 0 X191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) Q U X 993.4 SPOT ELEVATION ESTIMATED a J /est. IN OBSCURED AREAS (NOTE 1, 2, AND 4) a TREE / BRUSH LINE (NOTE 2) uj cn O O UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS 9 F (NOTE 2 AND 3) Z O UTILITY POLE (NOTE 2 AND 3) } ui OE OVERHEAD ELECTRICAL TRANSMISSION LINE W Y WATER (NOTE 5) U 9 ASH BASIN/COOLING POND BOUNDARY w w (APPROXIMATE) Z 0 0� ❑ OY 1 2 3 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. ) F23l0 000 (LOLA) BOUNDARY BOUNDARY r A DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD I REV DI ATE DESCRIPTION DRN APP N 0 300' 600' SCALE IN FEET TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS TOP OF LINER GRADING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 oww l/ri i'�r �iryr J i jlo qoz 0 iS tifes'- DRAWN BY: JWO PROJECT NO.: GC5770 • 9 CHECKED BY: VMD FILE: GC5770.02PO70 42294 = SIGNATUR Q ` REVIEWED BY: MAO DRAWING NO.: �• �NGIN�E�' ' G�` r FOR PERMIT ONLY, NOT FOR CONSTRUCTIONDATE ,�,,,.. APPROVED BY: VMOF D 7 35 ii'rrrii���r+`' 4 5 6 7 8 0 c 0 E F 0 C x 1 I 2 I 3 4 I 5 I 6 I 7 I 8 GRADES SHOWN ON THIS SHEET 24" PROTECTIVE SOIL LAYER %/ i i i i i i i i 12" 10 -5 CM/S COMPACTED SOIL LAYERS/, NOT TO SCALE ) F23l0 000 BOUNDARY l r 0 .1 C 0 LEGEND NOTES: E — — PROPERTY BOUNDARY FEMA FLOOD ZONE AE (NOTE 7) 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. E ELEVATIONS ARE BASED ON NAVD88. EXISTING GROUND ELEVATION FEMA FLOOD ZONE X (NOTE 7) A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF REV DATE DESCRIPTION DRN APP w w WETLANDS - NATIONAL WETLAND INVENTORY IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON EXISTING GROUND ELEVATION (NOTE 8) THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 00 CONTOURS IN OPEN AREAS (NOTE 1 AND 2) Geosyntec" DUKE a 20 PROPOSED TOP OF LEACHATE 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, q ---------------------- AERIAL MAPPING LIMIT (NOTE 6) COLLECTION CONTOUR IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N Lo RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR consultantsOF NC, PC Lc Lc CONSTRUCTION. — — ENElnk%(.3%vT o DRAINAGE CENTERLINE (NOTE 2) LEACHATE COLLECTION AND 1300 SOUTH MINT STREET, SUITE 410 oLEAK DETECTION SYSTEM CHARLOTTE, NC 28203 USA X X X X IE XX—x— FENCE LINE (NOTE 2) 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' PHONE: 704.227.0840 PROGRESS o LFM LEACHATE TRANSMISSION COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 LICENSE NO.:C 3500 — — — — — — — — — — — GRAVEL / DIRT PATH (NOTE 2) SYSTEM FORCE MAIN APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET TITLE: ----------- ONLY. X 191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) CO -01 CLEAN OUT LOCATION TOP OF LEACHATE COLLECTION SYSTEM GRADING PLAN Q 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. a &SO SPOT ELEVATION ESTIMATED PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS a X (esf� IN OBSCURED AREAS (NOTE 1, 2, AND 4) 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY o DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS ONSITE CCR DISPOSAL FACILITY a TREE /BRUSH LINE (NOTE 2) AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SITE: LuSURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. L.V. SUTTON ENERGY COMPLEX O O UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS o F (NOTE 2 AND 3) 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND WILMINGTON, NORTH CAROLINA 28401 F Z UTILITY POLE (NOTE 2 AND 3) ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. DESIGN BY: VMD DATE: AUGUST 2015 fff fff#fl lrri i [IfOE OVERHEAD ELECTRICAL TRANSMISSION LINE 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH ; '�`sQ�� CAS <r f 0 ki�SSjp ,�` DRAWN BY: JWO PROJECT NO.: GC5770 Z AND WILDLIFE SERVICE WEBSITE. Y WATER (NOTE 5) oc t C'; 0 CHECKED BY: VMD FILE: GC5770.02PO80 ASH BASIN/COOLING POND BOUNDARY 42294 L Lu (APPROXIMATE) "SIGNATUFZ� . ' ;''�© REVIEWED BY: MAO DRAWING NO.: Zw FOR PERMIT ONLY NOT FOR CONSTRUCTION /�-rn ��! 0 0 fv ,, N G; Q K Y� DATE '�. fl,� ,�`� APPROVED BY: VMDy OF 35 � � +f+riefffff. 1 2 3 4 5 6 7 8 0 C x VEGETATION (TYP) �3 I— i� i 2 GRADES SHOWN ON THIS SHEET GEOCOMPOSITE DRAINAGE LAYER 6 CAP PROTECTIVE LAYER FlfflT 10' (MIN) - 40 -mil HDPE CCR J TEXTURED GEOMEMBRANE GRADING KEY NOT TO SCALE LEGEND E — — PROPERTY BOUNDARY 20 EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) LFM EXISTING GROUND ELEVATION o CONTOURS IN OPEN AREAS (NOTE 1 AND 2) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) U C7 DRAINAGE CENTERLINE (NOTE 2) g o —XX—X XIXX—x— FENCE LINE (NOTE 2) 0 ___________ GRAVEL/DIRTPATH(NOTE2) c� 0 X191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) a U a X 993.4 SPOT ELEVATION ESTIMATED a. J (est.) IN OBSCURED AREAS (NOTE 1, 2, AND 4) u- 0 TREE / BRUSH LINE (NOTE 2) Lu ~ O O UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS o F (NOTE 2 AND 3) z 0 UTILITY POLE (NOTE 2 AND 3) Lu OE OVERHEAD ELECTRICAL TRANSMISSION LINE Z Y WATER (NOTE 5) U 9 09 ASH BASIN/COOLING POND BOUNDARY 0o H w w (APPROXIMATE) z' 00 ow Ia 0-1 1 2 3 FEMA FLOOD ZONE AE (NOTE 7) FEMA FLOOD ZONE X (NOTE 7) WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) PROPOSED LANDFILL CONTOUR LEACHATE TRANSMISSION SYSTEM FORCE MAIN 3 E! 5 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 1.1 N 0 300' 600' SCALE IN FEET FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 6 7 I L-- V vL.UIVIL--) y J F23l0 000 (LOLA) BOUNDARY BOUNDARY r A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP TITLE: Geosptec '', consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (> DUKE ENERGY.: PROGRESS FINAL COVER SYSTEM GRADING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 4,1 111I1 Illryr •`5'L1�1 CAR '. ,(j F..�S.. DRAWN BY: JWO PROJECT NO.: GC5770 .7' CHECKED BY: VMD FILE: GC5770.02PO90 42284 SIGNATCdit ._0`= REVIEWED BY: MAO DRAWING NO.: � DATE ,' M. pp,M �•�� APPROVED BY: VMD 9 35 Dr'rlellnit+l'� OF 7 8 0 C 0 E F 20 LFM 3 FEMA FLOOD ZONE AE (NOTE 7) FEMA FLOOD ZONE X (NOTE 7) WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) PROPOSED LANDFILL CONTOUR LEACHATE TRANSMISSION SYSTEM FORCE MAIN 3 E! 5 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 1.1 N 0 300' 600' SCALE IN FEET FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 6 7 I L-- V vL.UIVIL--) y J F23l0 000 (LOLA) BOUNDARY BOUNDARY r A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP TITLE: Geosptec '', consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (> DUKE ENERGY.: PROGRESS FINAL COVER SYSTEM GRADING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 4,1 111I1 Illryr •`5'L1�1 CAR '. ,(j F..�S.. DRAWN BY: JWO PROJECT NO.: GC5770 .7' CHECKED BY: VMD FILE: GC5770.02PO90 42284 SIGNATCdit ._0`= REVIEWED BY: MAO DRAWING NO.: � DATE ,' M. pp,M �•�� APPROVED BY: VMD 9 35 Dr'rlellnit+l'� OF 7 8 0 C 0 E F 10 my �c o"c o� u F wC z� rc O, 0 0 O� I L J `t J V I V 0 c x V F �y i VEGETATION (TYP) �3 I— i� 40 -mil HDPE TEXTURED GEOMEMBRANE E GRADES SHOWN ON THIS SHEET GEOCOMPOSITE DRAINAGE LAYER q/I CAP PROTECTIVE LAYER 10'(MIN) -� CCR J NOT TO SCALE LEGEND 3 — — PROPERTY BOUNDARY FEMA FLOOD ZONE AE (NOTE 7) EXISTING GROUND ELEVATION FEMA FLOOD ZONE X (NOTE 7) CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) w w WETLANDS - NATIONAL WETLAND INVENTORY EXISTING GROUND ELEVATION (NOTE 8) CONTOURS IN OPEN AREAS (NOTE 1 AND 2) 80 PROPOSED LANDFILL CONTOUR ---------------------- AERIAL MAPPING LIMIT (NOTE 6) O CHIMNEY DRAIN (NOTE 10) — — DRAINAGE CENTERLINE (NOTE 2) –X X X X IE XX—x– FENCE LINE (NOTE 2) GRAVEL / DIRT PATH (NOTE 2) X 191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) X 993.4 SPOT ELEVATION ESTIMATED (8$0 IN OBSCURED AREAS (NOTE 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O O x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) OE OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) E! NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 5 1.1 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. PHASE 1 AIRSPACE EQUAL TO APPROXIMATELY 4,631,063 CUBIC YARDS. 10. CHIMNEY DRAIN LOCATIONS ARE FOR REPRESENTATION PURPOSES ONLY AND SUBJECT TO CHANGE BASED ON OPERATION AND FILLING CONDITIONS. CHIMNEY DRAINS MAY BE INSTALLED DURING INITIAL STAGES OF FILLING EACH CELL. WHEN APPLICABLE, CHIMNEY DRAINS SHALL BE EXTENDED WHEN APPROXIMATELY FOUR (4) FEET OF PIPE REMAINS ABOVE THE CCR. ACTUAL NEED FOR CHIMNEY DRAINS WILL BE EVALUATED BASED ON OPERATIONAL EFFICIENCY OF THE LEACHATE COLLECTION SYSTEM AND DISPOSAL RATES. N 0 300' 600' SCALE IN FEET FOR PERMIT ONLY, NOT FOR CONSTRUCTION 5 1 6 7 1 F23l0 000 LAY OF LAND AREA (LOLA) BOUNDARY BOUNDARY r A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 PHASING PLAN 1 (� DUKE ENERGY PROGRESS PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 11A CiAIIQ y, !" o ,fid. oggj� DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P110 . 42284 SIGNATUJ&,- 'SOF_ REVIEWED BY: MAO DRAWING NO.: ,` APPROVED BY: VMD 11 OF 35 DATE x+',r`' 7 8 0 c 0 E F U w Z 0 0 K O 0 L i 2 GRADES SHOWN ON THIS SHEET GEOCOMPOSITE VEGETATION (TYP) DRAINAGE LAYER 5 1� 1=1.1 I1 �,I 1=III=III III=III=III=III=III- VEGETP CAP PROTECTIVE LAYER GRADING KEY I NOT TO SCALE o F? 386 00 \ \ 0 0 cv N 2 3 — — /25� r � k,z—, — l 21 ----- ----- I f I NORTH SURFACE I )TER POND (111.85 ACRES) w LEACHATE C FACILITY �z. 10 ,. -. 'e.2 304 --------------- O 10 2� 20 �O V 15 15 \ M a ini x / � E — — PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTE 1 AND 2) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) — — DRAINAGE CENTERLINE (NOTE 2) —>>E—X X Ili X X X_ FENCE LINE (NOTE 2) GRAVEL / DIRT PATH (NOTE 2) X 191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) X 993.4 SPOT ELEVATION ESTIMATED (est) IN OBSCURED AREAS (NOTE 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O O x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS F (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) OE OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) 1 1 2 W LEGEND PHASE 2 (CELLS 1 AND 2) (NOTE 9) -41 3 1 4 1 5 00 } 00 F2 308 00 v 76 1.1 7 I 8 F?30 ti� 10 v l w WE N' iwai III.— - s• s 0 1 e,� I m PHASE 1\\ (NOTEit 11 — milli — r �a 1• - — 1 •1 =- ---��'� ��\ -ate � i 1 \ � \ \ WI 5 v ,_ LANDFILL J k LANDFILL ^ FOOTPRINT - _.-- J ACCESS ROAD _ 20 INTERIM ACCESS RAMP /! \ ? I (101.11 ACRES) xI max) ry o °z O a l xry IT OF DISTURBANCE k -- ------ ---' _=�s—_—_�4== r '1984 ASH BASIN BOUNDA �_ N I _ m3o I I 71 ASH BASIN / x M �, x a I. x ox k k k �x BOUNDARY a I a � x -15 0 tix� m h� o h "NSI oe no- x A-0 �. I V I x� x A � k \ � I I k � x � � � / V� � I LAY OF LAND AREA w I a a k o a x I k�� k o �'1 " (LOLA) BOUNDARY Ar k 1 y yk " ox\ X k aOOx " ,�� n . � o xo .,o � D o ro o o v' k w x k N x a "' x x - /��' `° x ao `•' k v ""' o o. (- -� x 41 p 100 UI r v x o n m' p x a �Qy w v xe O h o v an 20 J/ 01) w% m a o x x p10 vv ho k _ / V ° x W x I COOLING POND \ — o —4b- a Ix NOTES: 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS FEMA FLOOD ZONE AE (NOTE 7) 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE OBTAINED FROM THE US FISH AND WILDLIFE SERVICE E PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON WEBSITE. FEMA FLOOD ZONE X (NOTE 7) NAVD88. A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD 9. PHASE 1 AND 2 AIRSPACE EQUAL TO APPROXIMATELY REV DATE DESCRIPTION DRN APP WETLANDS - NATIONAL WETLAND INVENTORY 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON 5,598,897 CUBIC YARDS. (NOTE 8) PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE 10. CHIMNEY DRAIN LOCATIONS ARE FOR REPRESENTATION�UKE 80 PROPOSED LANDFILL CONTOUR ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. PURPOSES ONLY AND SUBJECT TO CHANGE BASED ON Geosyntec' OPERATION AND FILLING CONDITIONS. CHIMNEY DRAINS O CHIMNEY DRAIN (NOTE 10) 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON MAY BE INSTALLED DURING INITIAL STAGES OF FILLING EACH consultants OF NC, PC ENERC.7' � WHETHER PUBLIC OR PRIVATE, IS BASED ON CELL. WHEN APPLICABLE, CHIMNEY DRAINS SHALL BE 1300 SOUTH MINT STREET, SUITE 410 PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS EXTENDED WHEN APPROXIMATELY FOUR (4) FEET OF PIPE CHARLOTTE, INC 28203 USA THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO REMAINS ABOVE THE CCR. ACTUAL NEED FOR CHIMNEY PHONE: 704.227.0840 PROGRESS COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. DRAINS WILL BE EVALUATED BASED ON OPERATIONAL LICENSE NO.:C-3500 EFFICIENCY OF THE LEACHATE COLLECTION SYSTEM AND TITLE: 4. DASHESHOWNDIN OBSCURS AND URED AREASIMATED ARE COMPILED EDLFROMIONS LIMITED DISPOSAL RATES. PHASING PLAN 2 PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED PROJECT: AREAS ARE FOR REFERENCE ONLY. CONSTRUCTION PERMIT APPLICATION DRAWINGS 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC N ONSITE CCR DISPOSAL FACILITY SURVEYS CONDUCTED BY WSP IN JUNE 2014. SITE: L.V. SUTTON ENERGY COMPLEX 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT 0 300' 600' WILMINGTON, NORTH CAROLINA 28401 F ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS SCALE IN FEET DESIGN BY: VMD DATE: AUGUST 2015 AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE s",,,,,,, OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 *,■ ��A CAp (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. ;' �O�'ssr t''L DRAWN BY: JWO PROJECT NO.: GC5770 .QO yy 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER `Q { r CHECKED BY: VMD FILE: GC5770.02P120 COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO 2$4 _ FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 SIGNATUIEv'•, JUNE 2006. ;� �Q`= REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION-� ,, APPROVED BY: VMD 12 OF 35 DATE +1 ++yr0 3 4 5 6 7 8 0 c 9 VEGETATION (TYP) �3 I— i E GRADES SHOWN ON THIS SHEET GEOCOMPOSITE DRAINAGE LAYER 6 CAP PROTECTIVE LAYER FlfflT 10' (MIN) - 40 -mil HDPE CCR J TEXTURED GEOMEMBRANE NOT TO SCALE LEGEND E — — PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTE 1 AND 2) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) U — — DRAINAGE CENTERLINE (NOTE 2) 0 o —X X X X IE XX—x— FENCE LINE (NOTE 2) 0 Lo GRAVEL / DIRT PATH (NOTE 2) U----------- ---------- 0 0 X191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) Q U X 993.4 SPOT ELEVATION ESTIMATED a J (esti IN OBSCURED AREAS (NOTE 1, 2, AND 4) a TREE / BRUSH LINE (NOTE 2) uj cn O O UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS 9 F (NOTE 2 AND 3) Z 0 UTILITY POLE (NOTE 2 AND 3) } ui OE OVERHEAD ELECTRICAL TRANSMISSION LINE W ,�, Y WATER (NOTE 5) U � 9 ASH BASIN/COOLING POND BOUNDARY w w (APPROXIMATE) Z 0O o� 0 Ka O Y 1 2 3 FEMA FLOOD ZONE AE (NOTE 7) FEMA FLOOD ZONE X (NOTE 7) WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) PROPOSED LANDFILL CONTOUR CHIMNEY DRAIN (NOTE 10) 3 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 5 1.1 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. PHASE 1, 2, AND 3 AIRSPACE EQUAL TO APPROXIMATELY 8,274,124 CUBIC YARDS. 10. CHIMNEY DRAIN LOCATIONS ARE FOR REPRESENTATION PURPOSES ONLY AND SUBJECT TO CHANGE BASED ON OPERATION AND FILLING CONDITIONS. CHIMNEY DRAINS MAY BE INSTALLED DURING INITIAL STAGES OF FILLING EACH CELL. WHEN APPLICABLE, CHIMNEY DRAINS SHALL BE EXTENDED WHEN APPROXIMATELY FOUR (4) FEET OF PIPE REMAINS ABOVE THE CCR. ACTUAL NEED FOR CHIMNEY DRAINS WILL BE EVALUATED BASED ON OPERATIONAL EFFICIENCY OF THE LEACHATE COLLECTION SYSTEM AND DISPOSAL RATES. N 0 300' 600' SCALE IN FEET FOR PERMIT ONLY, NOT FOR CONSTRUCTION 5 1 6 7 \ J �' �o 0 C• 0T r �A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REVDI ATE DESCRIPTION DRN APP TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 PHASING PLAN 3 (� DUKE ENERGY PROGRESS PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 ,'1''.��A GA,q �('jQ`.-* . / DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P130 42284 SIGNATUIJ= REVIEWED BY: MAO DRAWING NO.: pNGN ` GSC,. IGemr ��,�' APPROVED BY: VMD 13 QF 35 DATE ",141''yDiA,+`' 7 8 0 c 0 E F 0 C x V F my 1 I 2 I 3 4 I 5 I 6 7 I 8 GRADES SHOWN ON THIS SHEET 24" PROTECTIVE SOIL LAYER %/ i i i i i i i 12" 10 -5 CM/S COMPACTED SOIL LAYER-/" NOT TO SCALE — — PROPERTY BOUNDARY EXISTING GROUND ELEVATION w w CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION 80 CONTOURS IN OPEN AREAS (NOTE 1 AND 2) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) — — DRAINAGE CENTERLINE (NOTE 2) —X X X X IE XX—x— FENCE LINE (NOTE 2) GRAVEL/DIRTPATH(NOTE2) X 191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) X 193.4 SPOT ELEVATION ESTIMATED (est.) IN OBSCURED AREAS (NOTE 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O O x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) OE OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) LEGEND OY 1 2 3 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. SEASONAL HIGH GROUNDWATER TABLE WAS CONSTRUCTED USING THE HIGHER OF THE MODEL PREDICTED GROUNDWATER ELEVATIONS FROM THE NON PUMPING SCENARIO AS DISCUSSED IN APPENDIX 7 OR THE HIGHEST MEASURED GROUNDWATERELEVATION ETE 1996. ONLY, NOT FOR CONSTRUCTION 4 5 1 6 ) F23l0 000 BOUNDARY A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP TITLE: Geosyntec" considtantS OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS GROUNDWATER MONITORING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 lvk 64, dR O' FSS�, Vii'; DRAWN BY: JWO PROJECT NO.: GC5770 .. CHECKED BY: VMD FILE: GC5770.02P140 42284 ' SIGNATURE -6". ;'0`; REVIEWED BY: MAO DRAWING NO.: eu-mfr+ +,++''1. flA ,�`� APPROVED BY: VMD 14 OF 35 DATE +rriitri 7 8 0 C 0 E F FEMA FLOOD ZONE AE (NOTE 7) FEMA FLOOD ZONE X (NOTE 7) w w WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) 80 PROPOSED LANDFILL CONTOUR 1 +0- SEASONAL HIGH GROUNDWATER CONTOUR (NOTE 9) GROUNDWATER MONITORING WELL OY 1 2 3 NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. SEASONAL HIGH GROUNDWATER TABLE WAS CONSTRUCTED USING THE HIGHER OF THE MODEL PREDICTED GROUNDWATER ELEVATIONS FROM THE NON PUMPING SCENARIO AS DISCUSSED IN APPENDIX 7 OR THE HIGHEST MEASURED GROUNDWATERELEVATION ETE 1996. ONLY, NOT FOR CONSTRUCTION 4 5 1 6 ) F23l0 000 BOUNDARY A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP TITLE: Geosyntec" considtantS OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS GROUNDWATER MONITORING PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 lvk 64, dR O' FSS�, Vii'; DRAWN BY: JWO PROJECT NO.: GC5770 .. CHECKED BY: VMD FILE: GC5770.02P140 42284 ' SIGNATURE -6". ;'0`; REVIEWED BY: MAO DRAWING NO.: eu-mfr+ +,++''1. flA ,�`� APPROVED BY: VMD 14 OF 35 DATE +rriitri 7 8 0 C 0 E F 0 B C x F 2 306 000 E l� 32 DOWN DRAIN PIPE AT POND 32 LANDFILL PERIMETER 21 -15.7 16 17.1 — OWE Wl^ ao\ WN 0 34 - — 32 •- - POND • (11.85 ACRES) NOR H POND EMERGENCY SPILLWAY,M, •- H -• I — - P 3 4 5 6 7 8 T- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0o DOWN DRAIN 2308000\'20 / / PERIMETER CHANNEL v / 1111111 1111111 1111111 / I 1111111 1111111 I 32 / I 1111111 's / iiiiiii PERIMETER DRAINAGE CHANNEL 1111111 1111111 W / 1111111 33 1111111 18" 0 HDPE DOWN 1111111 20 / °0°1 iiiiiii DRAIN PIPE A 1111111 � / I 1111111 1111111 SIDE SLOPE 26 's / DRAINAGE N 31 1111111 TERRACE / I 9h� 1111111 �� � 1111111 / I 1111111 � N 1111111 1111111 1111111 / I 1111111 1111111 1111111 �h � / I 1111111 1111111 DOWN DRAIN PIPE INLET AT SIDE SLOPE DRAINAGE TERRACE 31 iiiiiii I - to 1111111 �s / 1111111 DOWN DRAIN PIPE INLET AT TOP 1111111 -TOP DE K 24 °°01 31 1111111 DRAINAGE N / / DECK DRAINAGE TERRACE 1111111 � TERRACE 31 cNn I 1111111 1111111 / / I 1111111 1111111 `25 20 / AERIAL MAPPING LIMIT 1811 O HDPE DOWN 26�/ (NOTE 6) DRAIN PIPE CULVERT S6 HP SIDE SLOPE DRAINAGE TERRACE L-----------------------------------------_1 31 -j -/ 35 ,7 2&7-- - ---- -- - ---=- " -- k° lack k\ ----------- --- -' -- k- ---------- - PROP RTY BOUNDARY 35 i .1 k k / / 1 �(� 1�����.� 21 - 1,6 u SITE ENTRANCE'; , k CULVERT N4 _ � ,v r- e---�'.'---` "" ��� _ 1'Y zo s n , / Y / SOUTH SURFACE HPHP ( HP I HP HP HP HP HP HP HP WATER POND HP HP (10.54 ACRES) p q HP a �k/QOo 18" O HDPE DOWN DRAIN PIPE \ 108 � TOP DECK 24 ng \ HP HP HP f� I / I DRAINAGE 110 / TERRACE 31 DOWN DRAIN PIPE INLET AT 25 12 / EARTHEN BERM 34 k s 21 �I HP "'� / TOP DECK DRAINAGE TERRACE 31 \ M HP / -n1I - 3a/ovboo/Q�oO HP HP HIP HP HP 1 / 108 0 0 1 �k a -- --- HP HP - / 106 GRADE TO DRAIN Q- 0 HP HP HP HP HP HP �o / o Co/o o 1 Q HPHP HP k o �30 � ,. � �_ E HP HPHP An HP � 21/ Al 14.3 35 - CULVERT N1 9.3 230 NORTH POND n V k k 21 4 000 CONCRETE RISER �`k / 1 - - 28 \ LEACHATE STORAGE FACILITY 15� 3 _ � 10 j 2i 20 15 W .� 15 15 � 10 V til 3 o NORTH OUTFALL W/ 30 15 'Lj 7s 20 3 W �\ lA, m PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTE 1 AND 2) AERIAL MAPPING LIMIT (NOTE 6) DRAINAGE CENTERLINE (NOTE 2) FENCE LINE (NOTE 2) GRAVEL / DIRT PATH (NOTE 2) SPOT ELEVATION (NOTE 1, 2, AND 4) SPOT ELEVATION ESTIMATED IN OBSCURED AREAS (NOTE 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) LEGEND 1 ,'.� '��rca:�� ,�- � � I' �. _ - - _ _ _ - . . • ♦ � ♦ - • ♦ � � 1, � ������.� � j�`+� � �� i'P p �t � � �'�� ��, � til' � - .• ��► �,;' i � • � . - i� ��� � 1 I �t�iiit � i7 - � ♦ ♦ �_ II, Q) X11 I� �� i� 1; �1!// % ��`= i • e / ���~i ��• `� /// 01 a,� ��'•s . �'' 1 , , ate\ � �`. \. 1I,,�1 � \���,�`�♦� � `` � 1 � r ,� � �;( '! � � � � � � � l � r� / � i � � / • � 11 '-�� �� �� '� ! IIS � %/ , �� �.� � .i i� � / . I �•' 1i� � ..,��-!I � •-'�l\\\�\ ����/' � � ', ` ;, ' � �' I �` �' a -iI�" ► ,!' , ,.,r/ ►� FEMA FLOOD ZONE AE (NOTE 7) FEMA FLOOD ZONE X (NOTE 7) WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) HIGH POINT IN SIDE SLOPE DRAINAGE TERRACE HIGH POINT IN PERIMETER DRAINAGE CHANNEL 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. E ELEVATIONS ARE BASED ON NAVD88. A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF REV DATE DESCRIPTION DRN APP IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, Geosyntec" DUKE IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS N ENElnk%','w3%vT RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR consultantsOF NC, PC CONSTRUCTION. 1300 SOUTH MINT STREET, SUITE 410Q CHARLOTTE, NC 28203 USA 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE 0 300' 600' PHONE: 704.227.0840 PROGRESS — COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 LICENSE NO.:C-3500 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE SCALE IN FEET TITLE: ONLY. SURFACE WATER MANAGEMENT PLAN 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY ONSITE CCR DISPOSAL FACILITY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS TOPOGRAPHY DATED MARCH 2 AND WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN IAL SITE: 015 (FLOWN 17 APRIL 0 4) AND WERE OBTAINEDFROM WSP. SURVEL.V. SUTTON ENERGY COMPLEX 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND WILMINGTON, NORTH CAROLINA 28401 F ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. DESIGN BY: VMD DATE: AUGUST 2015 4,�1Y 91111l,�I` ,•`'4.11A CA,q 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH pF` .F$s�©. /, DRAWN BY: JWO PROJECT NO.: GC5770 AND WILDLIFE SERVICE WEBSITE. CHECKED BY: VMD FILE: GC5770.02P150 42284 SIGNATURE Q ` REVIEWED BY: MAO DRAWING NO.: /'."GINE. Cyd: FOR PERMIT ONLY, NOT FOR CONSTRUCTION A� .`aM.{,•� APPROVED BY: VMD 15 OF 35 5 6 7 8 0 I� C I E 0 0 E 0 0 r Lo Lo 0 U C7 0 0 0 Lo U U z Q U J a Q J 0 Z Q Lu cn o F Z 0 } uj w z Lu �w Y U = 0 0 �F ww z� 00 o� ELI O' Y H w w LL Z O Q w J w 1 1 2 I 3 1 4 1 5 1 6 1 7 50 40 0 a RIPRAP APRON CULVERT OUTLET1 WITH RIPRAP APRON ctD CtD* LEACHATE STORAGE FACILITY \ 0 0 EXISTING GROUND CULVERT N4 EMBANKMENT / \ INLET ELEV = 20.22' CREST ELEV = 22.0' \ \\ OUTLET ELEV = 19.00' / 100 -YR EVENT _ WATER ELEV = 19.8' \ 25 -YR EVENT _ r � ________ WATER ELEV = 1 /-a" --- NORTH POND _CONCRETE RISER POND BASE ELEV. = 15.0' — 10 28 SEASONAL HIGH NORTH POND OUTLET 32 GROUNDWATER N -10, 0+00 2+00 4+00 6+00 8+00 10+00 12+00 14+00 16+00 18+00 20+00 DISTANCE (FEET) D SECTION 16 NORTH SURFACE WATER POND SCALE: 1" = 200' XREF: 50 40 30 20 10 Ill ' -10 22+00 24+00 26+00 28+00 29+00 -------------------- X X X X X X X -------------------XXXXXXX X 993.4 (est) M^l-^!YW VY, -y 0 0 x I— w w A-& LL Z OE O Q J 20 Lu LEGEND PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTE 1 AND 2) AERIAL MAPPING LIMIT (NOTE 6) DRAINAGE CENTERLINE (NOTE 2) FENCE LINE (NOTE 2) GRAVEL / DIRT PATH (NOTE 2) SPOT ELEVATION (NOTE 1, 2, AND 4) SPOT ELEVATION ESTIMATED IN OBSCURED AREAS (NOTE 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) PROPOSED LANDFILL CONTOUR FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 1 6 I VP' ur-ur1 ri17In,ein�r rrMMA�r �-ol N 0 100' 200' SCALE IN FEET NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 AND FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosptec" DUKE consultants OF NC, PC ENElnk%','w3%vT D 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: NORTH SURFACE WATER POND PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 A CAS' f!>I 1� t3arGSBjp DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P160 } 42284 SIGNATUVI ' 4 � REVIEWED BY: MAO DRAWING NO.: Air'. APPROVED BY: VMD 16 QF 35 7 8 0 C 0 E F 0 I� C ic E 0 0 a 0 0 r r` Lo 0 U C7 0 0 0 Lo U U z Q U J a J 0 Z Q Lu cn 9 F Z 0 } uj W z Lu �w Y U = 00 �F ww z� 00 o� ELI 0 Y 1 1 2 1 3 1 4 1 5 1 6 SECTION 7 0 100' 200' SCALE IN FEET �-ol LEGEND PROPERTY BOUNDARY E - EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTE 1 AND 2) ---------------------- AERIAL MAPPING LIMIT (NOTE 6) DRAINAGE CENTERLINE (NOTE 2) —XXXXXXXx— FENCE LINE (NOTE 2) — — — — — — — — — — .. GRAVEL /DIRT PATH (NOTE 2) X 191.1 SPOT ELEVATION (NOTE 1, 2, AND 4) X 1934 SPOT ELEVATION ESTIMATED (est) IN OBSCURED AREAS (NOTE 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O O x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTE 2 AND 3) UTILITY POLE (NOTE 2 AND 3) DE OVERHEAD ELECTRICAL TRANSMISSION LINE WATER (NOTE 5) FEMA FLOOD ZONE AE (NOTE 7) 20 PROPOSED LANDFILL CONTOUR NOTES: 1. COORDINATES ARE BASED ON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE AERIAL MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 AND FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE AERIAL MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. A DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD I REVDI ATE DESCRIPTION DRN APP TITLE: Geosptec" consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 (� DUKE ENERGY PROGRESS SOUTH SURFACE WATER POND PLAN PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 17 SOUTH SURFACE WATER POND�Wrs DESIGN BY: VMD DATE: AUGUST 2015 ealarrfr SCALE: 1" = 200' �J� F ssi© ti'. 1A DRAWN BY: JWO PROJECT NO.: GC5770 XREF: qQ,o oc • - CHECKED BY: VMD FILE: GC5770.02P160 42284 4 Q ` SIGNARt YJ �NGI REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION p r ' I ,l� � ur .......... M,• • Cyd 17 35 APPROVED BY: VMD DATE +'�'"riircis r OF 1 2 3 4 5 6 7 8 0 C 0 E F 0 C 9 E F �N 1 CONSTRUCTION SEQUENCING NOTES: 1. INSTALL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT. 2. INSTALL PERIMETER BMPS (I.E., SEDIMENT FENCE). 3. CONSTRUCT NORTH POND AND INTERIM SOUTH POND SEDIMENT BASINS (INCLUDING POROUS BAFFLES AND SKIMMERS). 4. CONSTRUCT PHASE 1. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) 6. CONSTRUCT PHASE 2. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) J � o� F2 306 oma, s /2s C° 27.4 EARTHEN BERM �. 32 ' ° 25 ( 48 49 NORTH POND RISER i STRUCTURE WITH 2 35 35 SKIMMER s OUTLET STABILIZATION II k �a rr STRUCTURE COOLING POND 2 3 6. CONSTRUCT SOUTH POND SEDIMENT BASIN (INCLUDING POROUS BAFFLES AND SKIMMER). 7. CONSTRUCT PHASE 3. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) 8. CLEAN OUT SEDIMENT BASINS AND CONVERT TO DETENTION PONDS. 9. STABILIZE REMAINING DISTURBED AREAS OF THE SITE IN ACCORDANCE WITH PERMIT DRAWINGS AND TECHNICAL SPECIFICATIONS. 10. REMOVE BMPS UPON FINAL STABILIZATION. 1 ' 2 4 1 5 6 RECP MULCHING, PERMANENT SEEDING EROSION AND SEDIMENT CONTROL SYMBOLOGY DESCRIPTION SYMBOL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE -EXIT 39 34 SEDIMENT FENCE 47 �® 34 SEDIMENT BASIN 48 Q 35 ROCK PIPE INLET PROTECTION 44 34 CHECK DAM 45 34 OUTLET STABILIZATION STRUCTURE 40 34 50 TEMPORARY SEEDING TS 35 PERMANENT SEEDING 51 35 PS 46 POROUS BAFFLE 34 TEMPORARY DIVERSIONS 42 T° To to To 'D 34 ROLLED EROSION CONTROL PRODUCT 41RECPRECPRECP- 34 43 TEMPORARY SLOPE DRAINS 34 TSD TSD � TSD TSD 52 T T T TEMPORARY SEDIMENT TRAP 35 MULCHING @ 0MU 3 k x „ v - a ji k 800k Qv / N ^. NOTES 7 1 �� F23l0 000 AERIAL MAPPING LIMIT (NOTE 6) -/ N -- ------ r_Gl ----__ v Qovk `� ✓ �� TEMPORARY SEDIMENT TRAP #10 c6 LIMIT OF 1 \o h k DISTURBANCE) k (NOTE 17)� I o o° MoD Sao �� 1 PROPOSED LANDFILL k k FOOTPRINT 101 ACRES k k � OUTLET STABILIZATION STRUCTURE \ INTERIM SOUTH POND RISER 48 49 ryk STRUCTURE WITH SKIMMER 35 35 k MU TS MULCHING AND TEMPORARY SEEDING (NOTE 18) 1971 ASH BASIN BOUNDARY 10. THE PROJECT SITE IS LOCATED IN THE CAPE FEAR RIVER BASIN. LEGEND - - PROPERTY BOUNDARY GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. EXISTING GROUND ELEVATION SITE ENVIRONMENTAL COORDINATOR IS RESPONSIBLE FOR CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND, 4) 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS 12. (NOTES 1 AND 2) -------------------------- AERIAL MAPPING LIMIT (NOTE 6) - - DRAINAGE BASIN DELINEATION - _ DRAINAGE CENTERLINE (NOTE 2) _X X X X X X X X FENCE LINE (NOTE 2) POST -DEVELOPMENT CONDITIONS. GRAVEL / DIRT PATH (NOTE 2) LIMIT OF DISTURBANCE PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND SPOT ELEVATION (NOTES 1, 2, AND 4) TOTAL DISTURBED AREA IS 182.90 ACRES (119.33 ACRES, PHASE 1 SPOT ELEVATION ESTIMATED IN OBSCURED AREAS (NOTES 1, 2, AND 4) LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR TREE / BRUSH LINE (NOTE 2) O 0 x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS 14. (NOTES 2 AND 3) UTILITY POLE (NOTES 2 AND 3) dh I �L WET AREA WATER (NOTE 5) OBSCURED AREAS ARE COMPILED FROM LIMITED 15. FEMA FLOOD ZONE AE (NOTE 7) PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 w w WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) 80 PROPOSED LANDFILL CONTOUR OE OVERHEAD ELECTRICAL TRANSMISSION LINE ASH BASIN/COOLING POND BOUNDARY A (APPROXIMATE) 1 ' 2 4 1 5 6 RECP MULCHING, PERMANENT SEEDING EROSION AND SEDIMENT CONTROL SYMBOLOGY DESCRIPTION SYMBOL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE -EXIT 39 34 SEDIMENT FENCE 47 �® 34 SEDIMENT BASIN 48 Q 35 ROCK PIPE INLET PROTECTION 44 34 CHECK DAM 45 34 OUTLET STABILIZATION STRUCTURE 40 34 50 TEMPORARY SEEDING TS 35 PERMANENT SEEDING 51 35 PS 46 POROUS BAFFLE 34 TEMPORARY DIVERSIONS 42 T° To to To 'D 34 ROLLED EROSION CONTROL PRODUCT 41RECPRECPRECP- 34 43 TEMPORARY SLOPE DRAINS 34 TSD TSD � TSD TSD 52 T T T TEMPORARY SEDIMENT TRAP 35 MULCHING @ 0MU 3 k x „ v - a ji k 800k Qv / N ^. NOTES 7 1 �� F23l0 000 AERIAL MAPPING LIMIT (NOTE 6) -/ N -- ------ r_Gl ----__ v Qovk `� ✓ �� TEMPORARY SEDIMENT TRAP #10 c6 LIMIT OF 1 \o h k DISTURBANCE) k (NOTE 17)� I o o° MoD Sao �� 1 PROPOSED LANDFILL k k FOOTPRINT 101 ACRES k k � OUTLET STABILIZATION STRUCTURE \ INTERIM SOUTH POND RISER 48 49 ryk STRUCTURE WITH SKIMMER 35 35 k MU TS MULCHING AND TEMPORARY SEEDING (NOTE 18) 1971 ASH BASIN BOUNDARY OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A SITE WHERE LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED ACCORDING TO THE FOLLOWING SCHEDULE: a. ALL PERIMETER DRAINAGE CHANNELS AND SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3H:1V) SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. b. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 6 PROJECT: SITE: BOUNDARY (LOLA) BOUNDARY N 0 300' 600' SCALE IN FEET DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD DATE DESCRIPTION DRN APP Geosyntec' DUKE consultantsOF NC, PC E E ��� 1300 SOUTH MINT STREET, SUITE 410 Q CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 EROSION AND SEDIMENT CONTROL PHASING PLAN 1 CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 ....} f` O� $f7�ESSljq �y9 ; DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P180 42284 = SIGNAT ', Q REVIEWED BY: MAO DRAWING NO.: 'G f NVQ; ATE DM• i3 AM�,``. APPROVED BY: VMD 18 y OF 35 DATE ���°} 7 8 0 C 0 E F 10. THE PROJECT SITE IS LOCATED IN THE CAPE FEAR RIVER BASIN. 1. COORDINATES ARE BASED UPON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 11. SITE ENVIRONMENTAL COORDINATOR IS RESPONSIBLE FOR MAINTENANCE AND CAN BE CONTACTED AT 910-520-9642. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 12. ON-SITE SOILS WERE CONSERVATIVELY ASSUMED TO BE 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY HSG TYPE D SOILS WITHIN THE LANDFILL FOOTPRINT, AND OFF-SITE IS WITHIN 2' OF ITS TRUE POSITION. AREAS WERE ASSUMED TO BE HSG TYPE A SOILS FOR PRE- AND POST -DEVELOPMENT CONDITIONS. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND 13. TOTAL DISTURBED AREA IS 182.90 ACRES (119.33 ACRES, PHASE 1 IS APPROXIMATE ONLY. IT IS THE USERS RESPONSIBILITY TO VERIFY ONLY). LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 14. TOTAL AREA TO BE STABILIZED WITH VEGETATION IS 78.14 ACRES (PHASE 1 ONLY). 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED 15. RECEIVING WATER IS DISCHARGE CANAL TO THE CAPE FEAR RIVER. PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE 16. PROJECT ENTRANCE IS LOCATED AT 34° 17'28" NORTH, 77° 58'41" FOR REFERENCE ONLY. WEST. A 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC 17. SEDIMENT FENCE AND LIMIT OF DISTURBANCE ARE OFFSET REV SURVEYS CONDUCTED BY WSP IN JUNE 2014. FOR CLARITY. 6. CONTOURS SHOWN OUTSIDE THE MAPPING LIMIT ARE FROM A LIDAR 18. PHASE 1 AND THE NORTH POND TO RECEIVE PERMANENT SEEDING. SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA THE INTERIM SOUTH POND TO RECEIVE TEMPORARY SEEDING. DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED 19. TEMPORARY SLOPE DRAINS TO BE PROVIDED AS REQUIRED AT THE MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM DISCRETION OF THE CONTRACTOR ON THE INTERMEDIATE COVER WSP. DURING WASTE FILLING OPERATIONS. ONCE FINAL COVER IS INSTALLED FOR PHASE 2, PERMANENT SEEDING DOWN DRAINS AS 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY SHOWN ON DRAWING 18, SURFACE WATER MANAGEMENT PLAN, ARE TITLE: GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP TO BE INSTALLED. PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 20. ROLLED EROSION CONTROL PRODUCT SHALL BE PLACED ON 3H:1 V 8 NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS SIDE SLOPES OF THE LANDFILL OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A SITE WHERE LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED ACCORDING TO THE FOLLOWING SCHEDULE: a. ALL PERIMETER DRAINAGE CHANNELS AND SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3H:1V) SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. b. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 6 PROJECT: SITE: BOUNDARY (LOLA) BOUNDARY N 0 300' 600' SCALE IN FEET DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD DATE DESCRIPTION DRN APP Geosyntec' DUKE consultantsOF NC, PC E E ��� 1300 SOUTH MINT STREET, SUITE 410 Q CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 EROSION AND SEDIMENT CONTROL PHASING PLAN 1 CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 ....} f` O� $f7�ESSljq �y9 ; DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P180 42284 = SIGNAT ', Q REVIEWED BY: MAO DRAWING NO.: 'G f NVQ; ATE DM• i3 AM�,``. APPROVED BY: VMD 18 y OF 35 DATE ���°} 7 8 0 C 0 E F 0 C m E F �N 1 CONSTRUCTION SEQUENCING NOTES: 1. INSTALL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT. 2. INSTALL PERIMETER BMPS (I.E., SEDIMENT FENCE). 3. CONSTRUCT NORTH POND AND INTERIM SOUTH POND SEDIMENT BASINS (INCLUDING POROUS BAFFLES AND SKIMMERS). 4. CONSTRUCT PHASE 1. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) 6. CONSTRUCT PHASE 2. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) J 0Q) �­30� Off. �V Z OUTLET STABILIZATION STRUCTURE F0 - COOLING POND LEGEND 2 3 6. CONSTRUCT SOUTH POND SEDIMENT BASIN (INCLUDING POROUS BAFFLES AND SKIMMER). 7. CONSTRUCT PHASE 3. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) 8. CLEAN OUT SEDIMENT BASINS AND CONVERT TO DETENTION PONDS. 9. STABILIZE REMAINING DISTURBED AREAS OF THE SITE IN ACCORDANCE WITH PERMIT DRAWINGS AND TECHNICAL SPECIFICATIONS. 10. REMOVE BMPS UPON FINAL STABILIZATION. - - PROPERTY BOUNDARY EXISTING GROUND ELEVATION CONTOURS IN OBSCURED AREAS (NOTE 1, 2, AND, 4) EXISTING GROUND ELEVATION CONTOURS IN OPEN AREAS (NOTES 1 AND 2) -------------------------- AERIAL MAPPING LIMIT (NOTE 6) - - DRAINAGE BASIN DELINEATION - - DRAINAGE CENTERLINE (NOTE 2) -XXXXXXXXX_ FENCE LINE (NOTE 2) ------------- GRAVEL / DIRT PATH (NOTE 2) LIMIT OF DISTURBANCE SPOT ELEVATION (NOTES 1, 2, AND 4) SPOT ELEVATION ESTIMATED IN OBSCURED AREAS (NOTES 1, 2, AND 4) TREE / BRUSH LINE (NOTE 2) O 0 x UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS (NOTES 2 AND 3) �- UTILITY POLE (NOTES 2 AND 3) X11/1 ,11/1 lll/1 �11l1 lll/1 WET AREA WATER (NOTE 5) FEMA FLOOD ZONE AE (NOTE 7) w w WETLANDS - NATIONAL WETLAND INVENTORY (NOTE 8) 80 PROPOSED LANDFILL CONTOUR OE OVERHEAD ELECTRICAL TRANSMISSION LINE ASH BASIN/COOLING POND BOUNDARY (APPROXIMATE) 1 1 2 E! o oma, F2 \308 2 000 - CULVERT N4 / -- I LIVIF'UKAKY SEDIMENT TRAP #11� "" 1984 ASH BASIN BOUNDARY CHECK DAM (TYP) I CIVIY'UKFiKY OLUF r_ VIi DRAINS (NOTE 19)I I r ( \ SEDIMENT FENCE (TYP) (NOTE 17) \! .N I P � EROSION AND SEDIMENT CONTROL SYMBOLOGY DESCRIPTION SYMBOL 39 TEMPORARY GRAVEL CONSTRUCTION ENTRANCE -EXIT .. 34 SEDIMENT FENCE 47 �® 34 SEDIMENT BASIN 48 Q 35 ROCK PIPE INLET PROTECTION 44 34 CHECK DAM 45 34 OUTLET STABILIZATION STRUCTURE 40 34 50 TEMPORARY SEEDING TS 35 PERMANENT SEEDING 51 35 PS 46 POROUS BAFFLE 34 TEMPORARY DIVERSIONS 42 To o to To 'D 34 ROLLED EROSION CONTROL PRODUCT 41RECPRECPRECP- 34 43 TEMPORARY SLOPE DRAINS 34 TSDT T TSD TSD TSD -) 52 TEMPORARY SEDIMENT TRAP 35 MULCHING @ 0MU 5 v ul , N -)I IA Ir A(I/ A I 1� NOTES: 1. COORDINATES ARE BASED UPON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS WITHIN 2' OF ITS TRUE POSITION. 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS APPROXIMATE ONLY. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR CONSTRUCTION. 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 6. CONTOURS SHOWN OUTSIDE THE MAPPING LIMIT ARE FROM A LIDAR SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE MAPPING LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. 9. SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A SITE WHERE LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED ACCORDING TO THE FOLLOWING SCHEDULE: a. ALL PERIMETER DRAINAGE CHANNELS AND SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3H:1V) SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. b. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. 1.1 7s 10. THE PROJECT SITE IS LOCATED IN THE CAPE FEAR RIVER BASIN. 11. SITE ENVIRONMENTAL COORDINATOR IS RESPONSIBLE FOR MAINTENANCE AND CAN BE CONTACTED AT 910-520-9642. 12. ON-SITE SOILS WERE CONSERVATIVELY ASSUMED TO BE HSG TYPE D SOILS WITHIN THE LANDFILL FOOTPRINT, AND OFF-SITE AREAS WERE ASSUMED TO BE HSG TYPE A SOILS FOR PRE- AND POST -DEVELOPMENT CONDITIONS. 13. TOTAL DISTURBED AREA IS 182.90 ACRES (9.72 ACRES, PHASE 2 ONLY). 14. TOTAL AREA TO BE STABILIZED WITH VEGETATION IS 18.77 ACRES (PHASE 2 ONLY). 15. RECEIVING WATER IS DISCHARGE CANAL TO THE CAPE FEAR RIVER. 16. PROJECT ENTRANCE IS LOCATED AT 34° 17'28" NORTH, 77' 58'41" WEST. 17. SEDIMENT FENCE AND LIMIT OF DISTURBANCE ARE OFFSET FOR CLARITY. 18. PHASE 2 TO RECEIVE PERMANENT SEEDING. 19. TEMPORARY SLOPE DRAINS TO BE PROVIDED AS REQUIRED AT THE DISCRETION OF THE CONTRACTOR ON THE INTERMEDIATE COVER DURING WASTE FILLING OPERATIONS. ONCE FINAL COVER IS INSTALLED FOR PHASE 2, PERMANENT SEEDING DOWN DRAINS AS SHOWN ON DRAWING 18, SURFACE WATER MANAGEMENT PLAN, ARE TO BE INSTALLED. 20. ROLLED EROSION CONTROL PRODUCT SHALL BE PLACED ON 3HAV SIDE SLOPES OF THE LANDFILL. 21. PHASE 1 BMPS TO REMAIN IN PLACE UNTIL STABILIZATION OF DISTURBED AREAS HAS BEEN ACHIEVED AND VEGETATION ESTABLISHED. FOR PERMIT ONLY, NOT FOR CONSTRUCTION 3 4 5 1 6 7 1 AERIAL MAPPING LIMIT N F?3l0 000 / N 0 300' 600' SCALE IN FEET BOUNDARY LAY OF LAND AREA[`Y��, (LOLA) BOUNDARY A DEC 2015 REVISED PER NCDEO COMMENTS JWOVMD REV DATE DESCRIPTION DRN APP Geosyntec' DUKE consultantsOF NC, PC E E ��� 1300 SOUTH MINT STREET, SUITE 410 Q CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: EROSION AND SEDIMENT CONTROL PHASING PLAN 2 PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 {,41111i1�,, o . `, {1XA CARO'. 0 r•. 1 %� DRAWN BY: JWO PROJECT NO.: GC5770 QUO 4+ . "9 CHECKED BY: VMD FILE: GC5770.02P190 42284 - sicvAT '=d`REVIEWED BY: MAO DRAWING NO.: ., M, fj}'1M {�'*, , APPROVED BY: VMD 19 OF 35 DATE'I�flt41 +V 4{{' 7 8 0 i C 0 E F 0 C 9 1 CONSTRUCTION SEQUENCING NOTES: 1. INSTALL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT. 2. INSTALL PERIMETER BMPS (I.E., SEDIMENT FENCE). 3. CONSTRUCT NORTH POND AND INTERIM SOUTH POND SEDIMENT BASINS (INCLUDING POROUS BAFFLES AND SKIMMERS). 4. CONSTRUCT PHASE 1. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) 6. CONSTRUCT PHASE 2. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) J F2 306 oma, 000 N (2 3 I /2s ) 34 t EARTHEN 32 32 BERM 0 zs 48 49 NORTH POND RISER' 35 35 STRUCTURE WITH SKIMMER' OUTLET- STABILIZATION UTLET STABILIZATION '�^a STRUCTURE CULVERT N1 k 2. I ° ,4.3 � k E - 2 3 6. CONSTRUCT SOUTH POND SEDIMENT BASIN (INCLUDING POROUS BAFFLES AND SKIMMER). 7. CONSTRUCT PHASE 3. a. LINER AND PERIMETER DRAINAGE CHANNELS (INCLUDING ROCK INLET PROTECTION, CHECK DAMS, AND OUTLET STABILIZATION STRUCTURES) b. FILL LANDFILL c. COVER (INCLUDING TEMPORARY SLOPE DRAINS AS NEEDED) d. STABILIZATION (INCLUDING ROLLED EROSION CONTROL PRODUCT, TEMPORARY SEEDING, AND PERMANENT SEEDING) 8. CLEAN OUT SEDIMENT BASINS AND CONVERT TO DETENTION PONDS. 9. STABILIZE REMAINING DISTURBED AREAS OF THE SITE IN ACCORDANCE WITH PERMIT DRAWINGS AND TECHNICAL SPECIFICATIONS. 10. REMOVE BMPS UPON FINAL STABILIZATION. �o oma, F2 308 2 000 J E! w v k� 20 5 CD 76 1.1 7 I 8 Lo � O TEMPORARY 25 01 ?O o SEDIMENT TRAP #13 OUTLE �5 DELINEATION BETWEEN DRAINAGE BASINS TO �L) STRU( (� 1 NORTH SURFACE WATER POND AND SOUTH / TEMP E ASEITREIAE SURFACE WATER POND 171 DRAINS (NOTE 19) - - - -- �+-- ��- 4 PROPOSED LANDFILL--- - �`� FOOTPRINT 101 ACRES ^� x POROUS CULVERT N4 �Y`�` -. D zos� CULVERT S6 BAFFLE (TYP) LOD a Loo- -FOD Lol] foo ioo Loo IOD LOL SC NORTH SURFACE 10 WATER POND = J-50: di 0U__ 60, N (11.85 ACRES) 70 I 70 80 -I Y w J TEMPORARY u- 80 90'100 - 90100-� M 50=40 U) 0 Q SEDIMENT TRAP #14 104 104 104 - -60- I- pyo o 106 106- 106 i-80 70 10b 108- 108 10-0 11C 110 100=90- 108 110- D__Ii� 16 108 3:1 EARTHEN 34 _90,100-' I 100-1u06� 1068 106 108 BERM 32 0 100_104 70 90=80 MULCHING AND PERMANENT MU PS SEEDING (NOTE 18) 70=60_ -- `y) SOUTH POND OUTLET j��� �. dill - 1984 ASH BASIN BOUNDAR R ROLLED EROSION CONTROL STRUCTURE (TYP) t 23p� 00 O k� x� D INTERIM POROUS BAFFLES TYP \ 1 "zoo ( ) 15 ,-� - k,�s_ k... a _ ACCESS CULVERT S3 . x 1 - -- ^ i t t� I - , MULCHING AND RAMP C 3D TEMPORARY m MU /7► ti w _' 2, w w - _ SEDIMENT TRAP #12 PERMANENT ROCK PIPE PS SEEDING (NOTE 18) INLET PROTECTION � w o Qo - - - - - = CHECK DAM (TYP) 0 C 20 O Zi k ^ k cI k x ox I rs., k 10 a a k I� ° mx o -x SEDIMENT FENCE ( TYP)l NOTE 17) 6 e ko Ar zo \ k II M 0 50 III N N 1971 ASH BASIN BOUNDARY \� k m h LIMIT OF DISTURBANCE (NOTE 17) 2l �� 15 I ��I m 3, 15 10 I ma' hk ho' � k 5I k 41 h h o a a a a o a k \ x " LAY OF LAND AREA . ^ oa k s x k k a J 30 t V, (LOLA) BOUNDARY � � r All VV 0k k n 9 X�� xo D 0 v A' COOLING POND w \ a a h k N k �p N k 16 x T w x h a / I yV / h k m I k _ /�// <o ao "' lY m a k O✓ � a �° .D Q k ° x y' 30 �15 ^ ♦��' ��_ I k h k Ln//'�C� y x Mk - .. % LEGEND EROSION AND SEDIMENT - - PROPERTY BOUNDARY SYMBOL 39 TEMPORARY GRAVEL CONSTRUCTION ENTRANCE -EXIT .. 34 EXISTING GROUND ELEVATION 1. COORDINATES ARE BASED UPON NORTH CAROLINA STATE PLANE GRID 47 CONTOURS IN OBSCURED AREAS SEDIMENT FENCE 34 0 ® (NOTE 1, 2, AND, 4) Q SEDIMENT BASIN 35 EXISTING GROUND ELEVATION ROCK PIPE INLET PROTECTION 44 34 CONTOURS IN OPEN AREAS 40 (NOTES 1 AND 2) OUTLET STABILIZATION STRUCTURE 34 -------------------------- AERIAL MAPPING LIMIT (NOTE 6) 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON - - DRAINAGE BASIN DELINEATION PERMANENT SEEDING 51 35 - - DRAINAGE CENTERLINE (NOTE 2) E POROUS BAFFLE 34 ON-SITE SOILS WERE CONSERVATIVELY ASSUMED TO BE TEMPORARY DIVERSIONS 42 34 -XXXXXXXXX_ FENCE LINE (NOTE 2) 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS ------------- GRAVEL / DIRT PATH (NOTE 2) TEMPORARY SLOPE DRAINS 34 LOD LOD LOD LOD LOD LIMIT OF DISTURBANCE a 0 MULCHING @ SPOT ELEVATION (NOTES 1, 2, AND 4) SPOT ELEVATION ESTIMATED IN OBSCURED AREAS (NOTES 1, 2, AND 4) N 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER TREE / BRUSH LINE (NOTE 2) Lo 0 UNIDENTIFIED UTILITIES / STRUCTURES / OBJECTS 0 13. (NOTES 2 AND 3) Q a �- UTILITY POLE (NOTES 2 AND 3) a u_ WET AREA 0 14. TOTAL AREA TO BE STABILIZED WITH VEGETATION IS 38.91 ACRES Lu WATER (NOTE 5) cn (PHASE 3 ONLY). 9 F FEMA FLOOD ZONE AE (NOTE 7) Z 15. RECEIVING WATER IS DISCHARGE CANAL TO THE CAPE FEAR RIVER. aw w WETLANDS - NATIONAL WETLAND INVENTORY OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC (NOTE 8) uj w 80 PROPOSED LANDFILL CONTOUR � Y U � o' OVERHEAD ELECTRICAL TRANSMISSION LINE ww INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE 0 o ASH BASIN/COOLING POND BOUNDARY 0 OY al (APPROXIMATE) ONLY. 17. 1 2 EROSION AND SEDIMENT CONTROL SYMBOLOGY DESCRIPTION SYMBOL 39 TEMPORARY GRAVEL CONSTRUCTION ENTRANCE -EXIT .. 34 1. COORDINATES ARE BASED UPON NORTH CAROLINA STATE PLANE GRID 47 SEDIMENT FENCE 34 0 ® 48 Q SEDIMENT BASIN 35 SITE ENVIRONMENTAL COORDINATOR IS RESPONSIBLE FOR ROCK PIPE INLET PROTECTION 44 34 CHECK DAM 45 34 40 MAINTENANCE AND CAN BE CONTACTED AT 910-520-9642. OUTLET STABILIZATION STRUCTURE 34 50 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON TEMPORARY SEEDING 35 TS PERMANENT SEEDING 51 35 PS 46 PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL POROUS BAFFLE 34 ON-SITE SOILS WERE CONSERVATIVELY ASSUMED TO BE TEMPORARY DIVERSIONS 42 34 TD o TD TD TD ROLLED EROSION CONTROL PRODUCT 41RECPRECPRECP�- 34 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS 43 HSG TYPE D SOILS WITHIN THE LANDFILL FOOTPRINT, AND OFF-SITE TEMPORARY SLOPE DRAINS 34 TSD TSD TSD TSD T T T 52 TEMPORARY SEDIMENT TRAP 35 ,-T, MULCHING @ 0MU 3 NOTES 10. THE PROJECT SITE IS LOCATED IN THE CAPE FEAR RIVER BASIN. 1. COORDINATES ARE BASED UPON NORTH CAROLINA STATE PLANE GRID SYSTEM, NAD83. ELEVATIONS ARE BASED ON NAVD88. 11. SITE ENVIRONMENTAL COORDINATOR IS RESPONSIBLE FOR MAINTENANCE AND CAN BE CONTACTED AT 910-520-9642. 2. THE PLANIMETRIC LOCATION ON THIS MAP IS BASED ON - PHOTOGRAMMETRIC MAPPING OF IMAGERY COLLECTED ON 17 APRIL 12. ON-SITE SOILS WERE CONSERVATIVELY ASSUMED TO BE 2014. DATA PROVIDED WHERE CLEAR AND VISIBLE ON THE IMAGERY IS HSG TYPE D SOILS WITHIN THE LANDFILL FOOTPRINT, AND OFF-SITE WITHIN 2' OF ITS TRUE POSITION. AREAS WERE ASSUMED TO BE HSG TYPE A SOILS FOR PRE- AND POST -DEVELOPMENT CONDITIONS. N 3. THE LOCATION OF ANY AND ALL UTILITIES SHOWN HEREON WHETHER PUBLIC OR PRIVATE, IS BASED ON PHOTOGRAMMETRIC MAPPING AND IS 13. TOTAL DISTURBED AREA IS 182.90 ACRES (53.85 ACRES, PHASE 3 ONLY). APPROXIMATE ONLY. IT IS THE USERS RESPONSIBILITY TO VERIFY LOCATION PRIOR TO COMMENCEMENT OF ANY DESIGN OR 14. TOTAL AREA TO BE STABILIZED WITH VEGETATION IS 38.91 ACRES 0 300' 600' CONSTRUCTION. (PHASE 3 ONLY). 4. DASHED CONTOURS AND ESTIMATED SPOT ELEVATIONS SHOWN IN 15. RECEIVING WATER IS DISCHARGE CANAL TO THE CAPE FEAR RIVER. SCALE IN FEET OBSCURED AREAS ARE COMPILED FROM LIMITED PHOTOGRAMMETRIC DATA DUE TO CONDITIONS DURING THE 17 APRIL 2014 FLIGHT. 16. PROJECT ENTRANCE IS LOCATED AT 34° 17'28" NORTH, 77'58'41" WEST, E INFORMATION SHOWN IN OBSCURED AREAS ARE FOR REFERENCE ONLY. 17. SEDIMENT FENCE AND LIMIT OF DISTURBANCE ARE OFFSET A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD FOR CLARITY. REV DATE DESCRIPTION DRN APP 5. CONTOURS SHOWN UNDERWATER ARE FROM BATHYMETRIC SURVEYS CONDUCTED BY WSP IN JUNE 2014. 18. PHASE 3 TO RECEIVE PERMANENT SEEDING. 6. CONTOURS SHOWN OUTSIDE THE MAPPING LIMIT ARE FROM A LIDAR 19. TEMPORARY SLOPE DRAINS TO BE PROVIDED AS REQUIRED AT THE Geosyntec'', DUKE SURVEY DATED APRIL 2007 OBTAINED FROM THE NORTH CAROLINA DOT DISCRETION OF THE CONTRACTOR ON THE INTERMEDIATE COVER GIS WEBSITE. CONTOURS AND TOPOGRAPHY WITHIN THE MAPPING DURING WASTE FILLING OPERATIONS. ONCE FINAL COVER IS consultantsOF NC, PC © LIMIT WERE OBTAINED FROM AN AERIAL SURVEY DATED MARCH 2015 INSTALLED FOR PHASE 2, PERMANENT SEEDING DOWN DRAINS AS 1300 SOUTH MINT STREET, SUITE 410 E N E�\ Yu a (FLOWN 17 APRIL 2014) AND WERE OBTAINED FROM WSP. SHOWN ON DRAWING 18, SURFACE WATER MANAGEMENT PLAN, ARE TO CHARLOTTE, NC 28203 USA BE INSTALLED. PHONE: 704.227.0840 PROGRESS - 7. FLOOD ZONE INFORMATION OBTAINED FROM NEW HANOVER COUNTY LICENSE NO.:C-3500 GIS WEBSITE AND ARE SHOWN IN REFERENCE TO FEMA FIRM MAP 20. ROLLED EROSION CONTROL PRODUCT SHALL BE PLACED ON 3HAV SIDE TITLE: PANELS 3109 AND 3200, LAST REVISED 2 JUNE 2006. SLOPES OF THE LANDFILL. EROSION AND SEDIMENT CONTROL PHASING PLAN 3 8. NATIONAL WETLAND INVENTORY INFORMATION SHOWN WAS OBTAINED 21. PHASE 1 AND PHASE 2 BMPS TO REMAIN IN PLACE UNTIL STABILIZATION FROM THE US FISH AND WILDLIFE SERVICE WEBSITE. OF DISTURBED AREAS HAS BEEN ACHIEVED AND VEGETATION PROJECT: ESTABLISHED. CONSTRUCTION PERMIT APPLICATION DRAWINGS 9. SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A SITE ONSITE CCR DISPOSAL FACILITY WHERE LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED ACCORDING TO THE FOLLOWING SCHEDULE: SITE: L.V. SUTTON ENERGY COMPLEX a. ALL PERIMETER DRAINAGE CHANNELS AND SLOPES STEEPER THAN 3 WILMINGTON, NORTH CAROLINA 28401 HORIZONTAL TO 1 VERTICAL (3H:1V) SHALL BE PROVIDED F TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DESIGN BY: VMD DATE: AUGUST 2015 DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. ,•���A CAR •i, 0E' 'VESS16 ��'i, "; DRAWN BY: JWO PROJECT NO.: GC5770 b. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR 4 PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS _ - _ CHECKED BY: VMD FILE: GC5770.02P200 PRACTICABLE BUT IN ANY EVENT WITHIN 14 CALENDAR DAYS FROM = THE LAST LAND -DISTURBING ACTIVITY. 422E34 SIGNATUFj..w�' �0�- REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION p 20 35 APPROVED BY: VMD DATE OF , 4 5 6 7 8 A n n A G n 7 A k O I L J 'Y J V / V A n 7 A G n_ 7 D k I G J Y J V / V 0 4.9 c E 1 6' (MIN) 3 1� % VARIES f- 2 3 PRIMARY GEOCOMPOSITE 24" PROTECTIVE SOIL LAYER DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER / 12" 10 _5 CM/S COMPACTED SOIL LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GENERAL FILL OR SUBGRADE GEOSYNTHETIC CLAY LINER 4 DETAIL 7 LINER SYSTEM ON FLOOR SCALE: 1" = 2' XREF: GC5770.02X051 24" PROTECTIVE SOIL LAYER 6' (MIN) 12 10 5 CM/S COMPACTED SOIL LAYER LINER \\/\\/\\/\\/\\/\\/\\ , GENERAL FILL OR r\\/\\/\\/\�2' (MIN).\ 4 //// / /i\/i\/i\/i\/i\/i\/i\/i\� /i\/i\/i\, \/i SYSTEM / \/\/\/\/\/\/\/\/\/\PREPARED SUB GRADE 23ON FLOOR 6' (MIN) CELL UNDER 3 CONSTRUCTION 1� %VARIES COMPLETE INTERCELL BERM I:] 4' EDGE OF LINER MARKER (NOTE 2 \/i\ 4 LINER SYSTEM /O PPG //\//\\jj\jj 23 O N F LOO R ,5 GMIS // ////\\\\\\jj / /N G // ENE RAL FILL OR PREPARED SUBGRADE /� \i\ PK! MARYGEOCOMPOSITE TEMPORARY TERMINATION %DRAINAGE LAYER OF INTERCELL BERM PRIMARY 60 -mil HDPE / TEXTURED GEOMEMBRANE F — — — -- ------- r ------r BACKFILL I I SECONDARY I I GEOCOMPOSITE DRAINAGE LAYER I I SECONDARY 60 -mil HDPE L TEXTURED GEOMEMBRANE — — — — — — — — — — — EXTRUSION WELD GEOSYNTHETIC CLAY LINER 6' (MIN) EXISTING CELL 3 N %� VARI E` 0 24" P Lo N /SO\V a Q 4 LINER / P PGCE1 V/1" // \/\ u SYSTEM \\\/ 23 ON FLOOR / \/�//�///�%`�/ //jam//\//�//�/ \/j� GENERAL FILL OR \'\�\PREPARED SUBGRADIE Lu cn \\i\ a F %,�i�/;;/;//;\�/��j,\/�\\/�\/�,�y/�\�/�\ .� TIE— I N TI I N T E F r Of Of w Lu 8 DETAIL �w Y U = 6 INTERCELL BERM a SCALE: 1" = 2' oX XREF: GC5770.02X071 10- 0 YI 3 �1 % VARI FUTURE CELL INTERCELL BERM ANCHOR TRENCH (NOTE 3) 3 6' (MIN) 3 11 24 PROTFCTIIt FSO/` �q YFR 1 ' 2 3 TIE-IN TO EXISTING GRADE FUTURE CELL % VARI 5 3 �1 24-pROrFC�/V � "so 10-s pkt DETAIL PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER LINER SYSTEM ON SIDE SLOPE SCALE: 1" = 2' XREF: GC5770.02X052 TOE OF FINAL COVER 6 7 EDGE OF LINER / OUTLET MARKER (NOTE 1) WELD PRIMARY TO SECONDARY ALONG PERIMETER EXTRUSION PRIMARY GEOCOMPOSITE — WELD (TYP) — — — — — — — — — DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED LINER TIE--IN AREA � GEOMEMBRANE I (NOTES 4, 5, AND 6) I I I SECONDARY GEOCOMPOSITE DRAINAGE LAYER I - SECONDARY 60 -mil HDPE 1' (MIN) TEXTURED GEOMEMBRANE LGEOSYNTHETIC CLAY CUT EXISTING LINER LINER SYSTEM COMPONENTS (SEE NOTE 5) @ I BACKFILL I - I — --—————————————— — — — — — — EXISTING WELD BACKFILL 3 1� 2' 2' 3 �1 5 LINER SYSTEM 23 ON SIDESLOPE \ /_ CCR 24" PROTECTIVE SOIL LAYER LINER SYSTEM 4 A ON FLOOR 23 10 -5 CM/S COMPACTEDLAYER--,----, AYE R �/, \�\\GENE\RAL FILL�OR SUBGRADE\%\i\\\�\\i\ 6 DETAIL 7 LINER SYSTEM AT BASE SCALE: 1" = 2' XREF: GC5770.02X054 LIMIT OF WASTE 3END PRIMARY GEOCOMPOSITE �1 DRAINAGE LAYER 3 FEET BELOW END IT-iAGEOTEKTILE THE CREST OF SLOPE AND WRAP 24 PROTECT/V T SO�� TACKED TO GEOCOMPOSITE F Cq YFR 70-s cm/s OW SOj LINER SYSTEM 5 \\\\� \\�\\\\i \\�\�\i / �R / ON SIDESLOPE 23 \�\\%\\i NOTES: GENERAL FILL OR SUBGRADE 1. THE EDGE OF LINER / OUTLET MARKER SHALL BE PLACED ADJACENT TO EACH 4" 0 DISCHARGE OUTLET OR AT 200' (MINIMUM) INTERVALS. THE MARKERS SHALL BE 4"x4"x8' PRESSURE -TREATED TIMBER POST (OR EQUIVALENT) AND SHALL BE PAINTED YELLOW. 2. LINER SYSTEM ANCHOR TRENCH SHALL HAVE ROUNDED CORNERS. DETAIL ANCHOR TRENCH AT CREST OF PERIMETER BERM SCALE: 1" = 2' XREF: GC5770.02X053 NOTES: 1. DETAILS ARE SHOWN TO SCALE AS NOTED EXCEPT FOR THE GEOSYNTHETICS WHICH ARE SHOWN AT AN EXAGGERATED SCALE FOR CLARITY. 2. THE EDGE OF LINER MARKER SHALL BE PLACED ALONG THE BERM AT 200' (MINIMUM) INTERVALS. THE MARKERS SHALL BE 4"X4"X8' PRESSURE -TREATED TIMBER POST (OR EQUIVALENT) AND SHALL BE PAINTED YELLOW. 3. LINER SYSTEM ANCHOR TRENCH SHALL HAVE ROUNDED CORNERS. 4. TO CONNECT THE BOTTOM LINER SYSTEMS DURING CONSTRUCTION, EXCAVATE THE LINER PROTECTIVE LAYER, REMOVE ANY SACRIFICIAL GEOTEXTILE SEPARATOR, AND CONNECT LIKE COMPONENTS OF GEOSYNTHETICS AS INDICATED. STAGGER THE SEAMS/OVERLAPS BETWEEN LIKE COMPONENTS OF GEOSYNTHETICS BY A MINIMUM OF 1 FOOT. 5. DO NOT CUT THE EXISTING SECONDARY GEOMEMBRANE AND GCL. TIE-IN AS SHOWN. 6. UPON REMOVAL OF PROTECTIVE COVER FROM THE TIE-IN AREA OF THE CELL, CONTRACTOR SHALL USE EXTREME CARE NOT TO DAMAGE EXISTING GEOSYNTHETICS. DAMAGED GEOSYNTHETICS SHALL BE REPAIRED AT CONTRACTOR'S EXPENSE. SITE MANAGER SHALL INSPECT TIE-IN AREA DURING REMOVAL. FOR PERMIT ONLY, NOT FOR CONSTRUCTION 4 5 6 A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosyntec'', DUKE consultantsOF NC, PC 03 E N E R ( Y 1300 SOUTH MINT STREET, SUITE 410 Q CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: LINER AND FINAL COVER SYSTEM DETAILS I PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 CARO 4• `C, rrSSlp . t DRAWN BY: JWO PROJECT NO.: GC5770 - CHECKED BY: VMDFILE: GC5770.02P230 284 REVIEWED BY: MAO DRAWING NO.: ti SIGNATA .- DAM. , ` APPROVED BY: VMD 23 35 DATE afii�iat1lA OF 7 8 c E F 1 0 GEOCOMPOSITE DRAINAGE LAYER 40 -mil HDPE TEXTURED GEOMEMBRANE -11 VEGETATION (TYP) 3 CCR DETAIL E FINAL COVER SYSTEM ON SIDESLOPE SCALE: 1" = 2' XREF: GC5770.02X055 C I "�LI������ 1 m E 0 v N N O 0 r f` Lo 0 U 0 N O 0 r` I` 0 U Z O Q U J a a J 0 Z Q Lu cn o F z 0 } uj w z Lu �w Y U = 00 aD F ww z� }Q o� �a O YI SWALE WITH RIP RAP GEOTEXTILE RIP RAP / 2 1 2c 0 2% 0 i 3 4 I 5 I 6 7 GEOCOMPOSITE VEGETATION (TYP) DRAINAGE LAYER 3 q/� - 5% 1� I= 1=III=III III=III=III=III=III= VEGETATIVE LAYER=III-III-III=III=III=III=III=III=III=III= 6 =I I= VEGETATION (TYP) I=1 11= =III- CAP PROTECTIVE LAYER 5% 18" ��� ���\ EGETATIVE LAYER ������!��\��\\���� 6" INTERMEDIATE COVER SOIL 12" 18" CAP PROTECTIVE LAYER 10 (MIN) - INTERMEDIATE COVER SOIL 40 -mil HDPE CCR 12" - TEXTUREDSaU GEOMEMBRANE 40 -mil HDPE CCR TEXTURED GEOMEMBRANE ri DETAIL 11 DETAIL 9 FINAL COVER SYSTEM AT CREST g FINAL COVER SYSTEM ON TOP DECK SCALE: 1" = 2' XREF: GC5770.02X056 SCALE: 1" = 2' XREF: GC5770.02X057 15' PERMANENT ACCESS ROAD 8" GRAVEL f2% - 18" (MIN) PROTECTIVE SOIL LAYER 5% .... .III EXTRUSION WELD 40 -MIL GEOMEMBRANE FLAP TO FINAL COVER GEOMEMBRANE DETAIL GEOTEXTILE SEPARATOR 6" TOP SOIL AND VEGETATION 12" INTERMEDIATE COVER SOIL LANDFILL ACCESS ROAD SCALE: 1" = 4' XREF: GC5770.02X099 4" O PERFORATED SEWN SEAM HEADER PIPE \\ (NOTES 1-5) EXTRUSION WELD D/ I VEGETATION (TYP) EDGE OF LINER / OUTLET MARKER (NOTE 6) SEWN SEAM DRAINAGE CORRIDOR AT PERIMETER ROAD p Q 0� (SODDED) \ 4" O DISCHARGE OUTLET (NOTES 1-5) L/. O Oso _ RIP RAP o ppO O C_> 2' - 1 2' GEOTEXTILE ANCHOR TRENCH EXTRUSION WELD 40 -mil FINAL COVER GEOMEMBRANE TO � 60 -mil PRIMARY BASE LINER DETAIL 3 1 � P GEOCOMPOSITE DRAINAGE LAYER �I FINAL COVER SYSTEM FINAL COVER 9 SYSTEM ON SIDESLOPE 24 Gp,P PRO '— IILmi. 1111'1 ..., `•111 •••1 HEADER PIPE - (NOTES 1-5) .• GENERAL OR PR - -- ..- . SUBGRADEII FINAL COVER SYSTEM TIE—IN AT PERIMETER BERM ANCHOR TRENCH SCALE: 1" = 2' XREF: GC5770.02X058 �- CCR FOR PERMIT ONLY, NOT FOR CONSTRUCTION 5 1 6 �-ol NOTES: 1. HEADER AND DISCHARGE OUTLET PIPES SHALL BE CORRUGATED HDPE PIPE 4 -IN IN DIAMETER. THE HEADER PIPE SHALL BE PERFORATED. 2. DISCHARGE OUTLET PIPES SHALL BE SPACED NO MORE THAN 250 FT APART. 3. HEADER PIPE SHALL BE INSTALLED AT A MINIMUM SLOPE OF 1%. 4. PIPE SHALL BE PROVIDED WITH A SCREENED OUTLET (T OR L) THAT DISCHARGES THE WATER INTO THE DRAINAGE SWALE. 5. HEADER PIPES SHALL BE TERMINATED WITH A CAP ON EITHER SIDE OF THE FINAL COVER DOWNCHUTES AND AT END LOCATIONS. 6. THE EDGE OF LINER / OUTLET MARKERS SHALL BE PLACED ADJACENT TO EACH 4" DIAMETER DISCHARGE OUTLET OR AT 200' (MINIMUM) INTERVALS. THE MARKERS SHALL BE 4"X4"X8' PRESSURE -TREATED TIMBER POST (OR EQUIVALENT) AND SHALL BE PAINTED YELLOW. 7. DETAILS ARE SHOWN TO SCALE AS NOTED EXCEPT FOR THE GEOSYNTHETICS WHICH ARE SHOWN AT AN EXAGGERATED SCALE FOR CLARITY. A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosptec" DUKE consultants OF NC, PC ENElnk%','w3%vT D 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: LINER AND FINAL COVER SYSTEM DETAILS II PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 CA%�}"1 ort (JQ rSSj l,� %� DRAWN BY: JWO PROJECT NO.: GC5770 ,j •.10 ti • 9 ;¢ CHECKED BY: VMDFILE: GC5770.02P240 $4 ,-� SIGNATl7R REVIEWED BY: MAO DRAWING NO.: DATE ",4 4 DANS APPROVED BY: VMD 24 OF 35 1;ffl 1111' ff 7 8 0 C 0 E F 10 >z I L J Y J V I V 0 c x F �y 1 2' RAL FILL OR SUBGRADE '110 F"'. 1 I " ` 3 l 28 PROTECT/VF s \ \i�/\/\/\/\� ixi\\>i �R S(�gG / L� Q 28 E GENERAL FILL OR SUBGRADE 1 3 3 PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER SOLID SECONDARY SUMP RISER PIPE 24"0 HDPE SDR 17 K 25 SECTION SUBMERSIBLE PUMP PERFORATED SECONDARY SUMP RISER PIPE 24" 0 HDPE SDR 17 GEOTEXTILE FILTER WRAP WITH SEWN SEAMS SECONDARY RISER PIPE AT SUMP SCALE: 1" = 2' XREF: GC5770.02X067 PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER SOLID LEAK DETECTION CLEAN HDPE OUT PIPE 6" O HDPE SDR 11 ELBOW - 16 28 PERFORATED LEAK DETECTION PIPE 6" O HDPE SDR 11 1ia-_ SOLID I PERFORATED GEOTEXTILE FILTER WRAP WITH SEWN SEAMS (TYP) 2' SUMP GRAVEL 12" 10 -5 CM/S COMPACTED SOIL LAYER 16' L DETAIL 25 LEAK DETECTION PIPE AT SUMP (NOTE) SCALE: 1" = 2' XREF: GC5770.02X068 OY 1 2 3 L': rp L. 28 5 TED HDPE END CAP L^' GENERAL FILL OR SUBGRADE LINER4 SYSTEM ON FLOOR 23 7 r� 1.-0% NOTES: 1. DETAILS ARE SHOWN TO SCALE AS NOTED EXCEPT FOR THE GEOSYNTHETICS WHICH ARE SHOWN AT AN EXAGGERATED SCALE FOR CLARITY. 2' A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD LEACHATE COLLECTIO7GRAVELREV DATE DESCRIPTION DRN APP 1.5' consultantsOF NC, PC ENEInk%l'..'7% Yo 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS RIGRESS LICENSE NO.:C-3500 \\/�1 TITLE: GENERAL 2 SUBGRADEILLOR SECONDARY SUMP CROSS SECTIONS PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 CA1Cf"o,� 0 •Fr�$Sj�j • DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P260 42284 - SIGNATUfjE&'. ;'.�o`_ REVIEWED BY: MAO DRAWING NO.: %FOR PERMIT ONLY, NOT FOR CONSTRUCTIONDATE + .."4f `�'''' APPROVED BY: VMD 26 OF 35 5 6 7 8 IA1 A 0 E F 0 IV c •J E F my i / Q 28 PROTFCTi�� S � ol` 44 yFR KA SOLID PRIMARY SUMP RISER PIPES 24" 0 HDPE SDR 17 3 PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER P SOLID 3"0 SDR 11 r— 28 HDPE PIPE SOLIDI PERFORATED HDPE ELBOW ^Ol11 IPl 1 GA/-LJATC f f -\l 1 C!`TI(lAl 1-1 CAAI C! PERFORATED PRIMARY SUMP RISER 15 PIPES 24" O HDPE SDR 17 28 5 GEOTEXTILE FILTER WRAP WITH SEWN SEAMS 1.0% 1SUBMERSIBLE PUMP 2,5' ------ --� 0 0 0 0 0 0 0 6-16 --6 o o- 'O -V-o- -o -O-`6 -0-31 O O O O O O O O O O O O O O O O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12" 10 -5 CM/S COMPACTED SOIL LAYER 16' rm-" SECTION 25 PRIMARY SUMP RISER SCALE: 1" = 2' XREF: GC5770.02X069 PERFORATED HDPE END CAP SUMP GRA v E -L X11111' • ••-® x:1:1:1: .••• ,,. OY 1 2 3 N 25 SECTION LEACHATE COLLECTION PIPE AT SUMP SCALE: 1" = 2' XREF: GC5770.02X070 0 1.5' i 7 �-ol NOTES: 1. DETAILS ARE SHOWN TO SCALE AS NOTED EXCEPT FOR THE GEOSYNTHETICS WHICH ARE SHOWN AT AN EXAGGERATED SCALE FOR CLARITY. A I DEC 2015 I REVISED PER NCDEQ COMMENTS I JWO I VMD REV DATE DESCRIPTION DRN APP TITLE: GeosyntecO' consultants OF NC, PC 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 LICENSE NO.:C-3500 PRIMARY SUMP CROSS SECTIONS PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 +�+++91P111+�r •'.\\A GA,q 0 *'*SGSj . /4"; ' DRAWN BY: ,JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P270 - 42284 - SIGNATUF4- 1.D = REVIEWED BY: MAO DRAWING NO.: / �NGIN�C G<c,�= FOR PERMIT ONLY, NOT FOR CONSTRUCTION � � 4f DAl$ APPROVED BY: VMD 27 OF 35 DATE J"O 111 a 11+++ 5 6 7 8 I'1 Eo FI E F DUKE E�IERY� PRIMARY SUMP CROSS SECTIONS PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 +�+++91P111+�r •'.\\A GA,q 0 *'*SGSj . /4"; ' DRAWN BY: ,JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P270 - 42284 - SIGNATUF4- 1.D = REVIEWED BY: MAO DRAWING NO.: / �NGIN�C G<c,�= FOR PERMIT ONLY, NOT FOR CONSTRUCTION � � 4f DAl$ APPROVED BY: VMD 27 OF 35 DATE J"O 111 a 11+++ 5 6 7 8 I'1 Eo FI E F 24"0 SDR 17 HDP LEACHATE SUMP RISER PIPE (FOUI ROWS OF A ALTERNATING PERFORATIONS) C 9 E 0 N N O 0 r Lo Lo U p C7 0 0 0 Lo U U z 0 U J a J J 0 Z Q w cn o F z 0 } li w z Lu �w Y U = aD F ww zI 0 0� 0 �a o ELI - 15 25 #57 DRAINAC AGGREGAI 3/8" DIA. HOLE 3/8" DIA. HC 1 PLAN 90° 45° 45° 45° 45° 90° SECTION DETAIL 10LES PERFORATIONS FOR LEACHATE SUMP RISER PIPES SCALE: NOT TO SCALE XREF: GC5770.02X065 E PLAN 120° SECTION 16'\\ DETAIL 1/2"0 HOLES SDR 11 HDPE PIPE (TWO ROWS OF PERFORATIONS) 25 PERFORATIONS FOR LEAK DETECTION AND LEACHATE COLLECTION PIPES SCALE: NOT TO SCALE XREF: GC5770.02X402 3 � 4 PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER 5 I 6 16 PERFORATED LEACHATE COLLECTION PIPE 8" O HDPE SDR 11 (TYP) 28 PERFORATED PRIMARY SUMP RISER 15 PIPES 24" 0 HDPE SDR 17 28 7 �-ol )�j�/ /- • 1k,� /tl!/ ,, .r��I '1. �' ) v/ t..3 ''�.•�/''� Y 1 �[/it�jl•� �r �" ` M,> �Y/ t■ • �1 Ii'•.)�) ,>�.1�)��''�'r•} i,'►-. 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IVA ////l 2" 10 -5 CM/S COMPACTED SOIL-� •- ® - - • ■ PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER 1 2.5' 2.5' ?" OR 18" DIA. ERFORATED HDPE GENERAL FILL ISER PIPE 3EE NOTE 1) OR SUBGRADE GENERAL FILL PROFILE rl 7 DETAIL 28 CHIMNEY DRAIN PIPE PERFORATIONS SCALE: 1" = 2' XREF: GC5770.02X407 17 SEGMENT OF 12" OR 18" DIA. PERFORATED HDPE RISER PIPE 28 3/8" DIA. PERFORATIONS (4 PER ROW, 90 -DEGREE SEPARATION) AND 4 ROWS PER FOOT 5' 2 5' 1F 4.0' 2' 12 10 CM/S COMPACTED SOIL LAYER SOLID LEACHATE COLLECTION CLEAN OUT PIPE 8" 0 HDPE SDR 11 SOLID LEAK DETECTION CLEAN OUT PIPE 6" 0 HDPE SDR 11 SOLID SECONDARY SUMP RISER PIPE 24" 0 HDPE SDR 17 /Q \ SECTION 25 / RISER TRENCH ON SIDE SLOPE SCALE: 1" = 2' XREF: GC5770.02X060 O r 28 6" 0 HDPE PERFORATED PIPE 28 DRAINAGE AGGREGATE AND SAND OR SELECT BOTTOM ASH TO PERFORATED RISER PIPE INTERFACE AGGREGATE DRAINAGE 8 OZ/SY NON -WOVEN GEOTEXTILE 1' pO 0000000°0000000°000000 o°0000000000000°000000 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 0000000000000OpOOC. 00-0- 0-0- QOpo000Opop00000 10' - PROTECTIVE COVER 12" 0 HDPE PERFORATED PIPE L_ ro 28 rl DETAIL 11 CHIMNEY DRAIN SCALE: 1" = 4' XREF: GC5770.02X405 SAND OR SELECT BOTTOM ASH TOP OF LEACHATE LATERAL OR CORRIDOR 2 �1 1 1.5 FT. GEOTEXTILE RUNOUT (TYP.) CHIMNEY DRAIN NOTES: 1. CHIMNEY DRAIN SHALL BE LOCATED DIRECTLY OVER LCS LATERALS AND/OR CORRIDORS. THE CHIMNEY DRAIN LOCATION MAY BE ESTABLISHED BY THE OPERATOR. 2. CHIMNEY DRAIN PIPES SHALL NOT BE DIRECTLY CONNECTED TO LCS LATERAL OR HEADER PIPES. 3. DETAIL ILLUSTRATES THE TYPICAL CHIMNEY DRAIN CONCEPT. DIMENSIONS AND MATERIALS MAY BE VARIED AND ADJUSTED TO FIELD FIT CONDITIONS AND ADAPT TO FIELD PERFORMANCE. 4. CHIMNEY DRAIN SHALL BE POSITIONED NO CLOSER THAN 50 FEET FROM AN EXTERIOR SLOPE, WITH THE EXCEPTION OF SUMP AREA DRAINAGE FEATURES. 3 PERFORATED LEAK DETECTION 16 PIPE 6" 0 HDPE SDR 11 (TYP) 28 Pl SECTION 25 LEACHATE COLLECTION SUMP SCALE: 1" = 2' XREF: GC5770.02X059 PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER (NOTE 1) SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER PROTECTIVE SOIL LAYER LINER 5 SYSTEM ON SIDESLOPE 23 SOLID PRIMARY SUMP RISER PIPES 24" 0 HDPE SDR 17 12" OR 18" 0 PERFORATED HDPE RISER PIPE 3/8" 0 PERFORATIONS (4 PER ROW, 90 -DEGREE SEPARATION) AND 4 ROWS PER FOOT PROTECTIVE COVER - 5. DRAINAGE MEDIA AND/OR INTERFACES BETWEEN DRAINAGE MEDIA SHALL BE DESIGNED TO PROVIDE FILTRATION AND LIMIT CLOGGING. 6. CHIMNEY DRAIN LOCATIONS ARE FOR REPRESENTATION Q PURPOSES ONLY AND SUBJECT TO CHANGE BASED ON OPERATION AND FILLING CONDITIONS. CHIMNEY DRAINS MAY 28 BE INSTALLED DURING INITIAL STAGES OF FILLING EACH CELL. WHEN APPLICABLE, CHIMNEY DRAINS SHALL BE EXTENDED WHEN APPROXIMATELY FOUR (4) FEET OF PIPE REMAINS ABOVE THE CCR. ACTUAL NEED FOR CHIMNEY DRAINS WILL BE EVALUATED BASED ON OPERATIONAL EFFICIENCY OF THE LEACHATE COLLECTION SYSTEM AND DISPOSAL RATES. GEOTEXTILE FILTER WRAP WITH SEWN SEAM AT TOP (TYP) CCR OF CELL PERFORATED LEACHATE 16 3.75' COLLECTION PIPE 8" 0 HDPE SDR 11 28 2.1% 1, 2.1% 1 1 24" PROTECTIVE SOIL LAYER -q - •����������������������������w - ...■.....■------■------------------------ 12" 10 -5 CM/S COMPACTED SOIL LAYER �!•_ ` �� �..•.0 ��'.i � _J•••• � iN/N/N/v�.r/�B//.V/.�/Ie/%7/I�/I�/ NOTE: ���//j\�////�/%�'\ LEACHATE COLLECTION GRAVEL 1. WITHIN LEAK DETECTION TRENCH, THE GEOCOMPOSITE 1 ����//��//�//�//�//�//�//�//�//\�//�/%� 1 16 PANEL SHALL BE ORIENTED WITH MACHINE DIRECTION 2 \ \��\��\��\��\��\��\��\�� 2 PERFORATED LEAK DETECTION 28 PARALLEL TO TRENCH CENTERLINE. GENERAL FILL PIPE 6" 0 HDPE SDR 11 OR SUBGRADE �GENERAL FILL 1 OR SUBGRADE R \ SECTION 21 LEACHATE COLLECTION AND LEAK DETECTION SYSTEMS SCALE: 1" = 2' XREF: GC5770.02X061 C C WILMINGTON, NORTH CAROLINA 28401 F SECTIONIIil tlii�IR DESIGN BY: VMD DATE: AUGUST 2015 r,r'rr �kl CAR CHIMNEY DRAIN AT LEACHATE PIPE,?Q,o .� DRAWN BY: JWO PROJECT NO.: GC5770 SCALE: 1" = 4' XREF: GC5770.02X406 - - CHECKED BY: VMD FILE: GC5770.02P280 42284 SIGNATUFj -b% REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION DATE '-�.';!,�flAM��'APPROVED BY: VMD 28 OF 35 5 6 7 8 6" 0 HDPE PERFORATED PIPE 16 28 NOTES: DRAINAGE AGGREGATE AND 1. DETAILS ARE SHOWN TO SCALE AS NOTED EXCEPT FOR THE GEOSYNTHETICS WHICH ARE SAND TO PERFORATED RISER SHOWN AT AN EXAGGERATED SCALE FOR CLARITY. PIPE INTERFACE E #57 DRAINAGE AGGREGATE 8 OZ/SY NON -WOVEN A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD GEOTEXTILE FILTER REV DATE DESCRIPTION DRN APP ° o SAND OR SELECT BOTTOM ASH Geosyntec" [ UKE 0 ° 0 1 �1 2 �1 COriSL11taI1tS OF NC, PC �Yo ENER 1300 SOUTH MINT STREET, SUITE 410 °c ° O CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS ' LICENSE NO.:C-3500 TITLE: LEACHATE COLLECTION SYSTEM DETAILS I PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY 1.5 FT. GEOTEXTILE RUNOUT (TYP.) SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 F SECTIONIIil tlii�IR DESIGN BY: VMD DATE: AUGUST 2015 r,r'rr �kl CAR CHIMNEY DRAIN AT LEACHATE PIPE,?Q,o .� DRAWN BY: JWO PROJECT NO.: GC5770 SCALE: 1" = 4' XREF: GC5770.02X406 - - CHECKED BY: VMD FILE: GC5770.02P280 42284 SIGNATUFj -b% REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION DATE '-�.';!,�flAM��'APPROVED BY: VMD 28 OF 35 5 6 7 8 0 I� C NEOPRENE GASKET SILICONE SEALANT i PIPE WALL \ / \ TWO 1/2" WIDE STAINLESS STEEL / \ BAND CLAMP (NON-ADJUSTABLE) / GEOMEMBRANE SKIRT NOTE: 6 -INCH DIAMETER LEACHATE COLLECTION CLEANOUT PIPES SHALL ALSO BE BOOTED AS INDICATED IN THIS FIGURE. I / CAP AND FLANGE i SOLID PRIMARY SUMP RISER y — \ PIPES 24" 0 HDPE SDR 17 1 (SEE NOTE) _3- 1 REINFORCED CONCRETE PADS 4 ° ° ° ° '/7 /'7/ 77''//i////i//i GENERAL FILL OR SUBGRADE EXTRUSION WELD (TYP) — EXTRUSION WELD PIPE BOOT TO PRIMARY GEOMEMBRANE 19 25 NEOPRENE GASKET \\\\\\\\\\\\\ /\ GENERAL FILL \,\\//\/ �OR SUBGRADE PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE SECONDARY GEOCOMPOSITE DRAINAGE LAYER SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER DETAIL SACRIFICIAL GEOTEXTILE OR GEOMEMBRANE PIPE BOOT TO WELD FUTURE FINAL COVER CCR i� Q 24„ pRQT�CT/� 2$ \\/ 12"1p S CQMP 3 PRIMARY SUMP RISER PIPE AT ANCHOR TRENCH SCALE: 1" = 2' XREF: GC5770.02X062 SILICONE SEALANT i PIPE WALL \ NOTE: 6 -INCH DIAMETER LEACHATE COLLECTION CLEANOUT PIPES SHALL ALSO BE BOOTED AS INDICATED IN THIS FIGURE. II \ /< CAP AND FLANGE I REINFORCED E CONCRETE PAD 0 rn N N O O r r` u7 U 0 0 0 U Z 0 U Q LL 0 z a Lu o F z 0 } ui uiz z w 'w Y U � ww z� > 0 0 0 WO -1 Y EXTRUSION WELD (TYP) — EXTRUSION WELD PIPE BOOT TO PRIMARY GEOMEMBRANE TWO 1/2" WIDE STAINLESS STEEL BAND CLAMP (NON-ADJUSTABLE) GEOMEMBRANE SKIRT 4" O PERFORATED DRAINAGE HEADER PIPE 6LUUNUAKY C3tUL;UMF'U6I I t UKAINAUL: LAYEK SECONDARY 60 -mil HDPE TEXTURED GEOMEMBRANE GEOSYNTHETIC CLAY LINER Wa lf_111 FINAL COVER SYSTEM ON SUMP RISER PIPE AT ANCHOR TRENCH SCALE: 1" = 2' XREF: GC5770.02X064 1 2 ' 3 5 CAP AND FLANGE —\ -3' REINFORCED CONCRETE PAD ° Q ° ° ° GENERAL FILL OR SUBGRADE EXTRUSION WELD PIPE BOOT TO SECONDARY GEOMEMBRANE L^' NEOPRENE GASKET SILICONE SEALANT — — PIPE WALL i 1 / 11 1 1 1 K02 0 25 8 VEGETATION (TYP) flCrIRACf.ADMAAIC Cl AM —JCVVIV JCHIVI EXTRUSION WELD (TYP) 3 Cl CAP AND 2' (MIN.) FLANGE 6" 0 SDR 11 SOLID HDPELEACHATE CLEANOUT RISER PIPE 3 1� FINAL COVER SYSTEM ON SIDESLOPE GEOCOMPOSITE DRAINAGE LAYER PRIMARY 40 -mil HDPE TEXTURED GEOMEMBRANE CCR DETAIL TWO 1/2" WIDE STAINLESS STEEL BAND CLAMP (NON-ADJUSTABLE) GEOMEMBRANE SKIRT SOLID SECONDARY SUMP RISER PIPE 24" O HDPE SDR 17 (SEE NOTE) — PIPE BOOT 7 EXTRUSION WELD PRIMARY GEOMEMBRANE TO PIPE BOOT AND TERMINATE PRIMARY GEOCOMPOSITE 24„PRQTRC7 /V \� F sQ/t 44 yFR r� CCR PRIMARY GEOCOMPOSITE DRAINAGE LAYER PRIMARY 60 -mil HDPE TEXTURED GEOMEMBRANE GENERAL FILL OR SUBGRADE O cSECONDARY DRrF SECONDARY 60-OCOSITEmil DPEOTEXTUREID GEOMEMBRANE \�\j\\ j/ D SOjtq yER GEOSYNTHETIC CLAY LINER 3 SECONDARY SUMP RISER PIPE AT ANCHOR TRENCH SCALE: 1" = 2' XREF: GC5770.02X063 NEOPRENE GASKET SILICONE SEALANT i PIPE WALL \ / \ TWO 1/2" WIDE STAINLESS STEEL / \ BAND CLAMP (NON-ADJUSTABLE) / GEOMEMBRANE SKIRT 1 / LEAK DETECTION CLEAN OUT CCR J LINER SYSTEM 5 23 2' (MIN.) 28 LEACHATE COLLECTION t�LtHIV VU I 23 DETAIL 8 CLEANOUT RISER PIPE SCALE: 1” = 2' XREF: GC5770.02X403 NOTES 1. DETAILS ARE SHOWN TO SCALE AS NOTED EXCEPT FOR THE GEOSYNTHETICS WHICH ARE SHOWN AT AN EXAGGERATED SCALE FOR CLARITY. JER STEM / 5 23 I'1 C E GENERAL 1 A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD BACKFILL F, REV DATE DESCRIPTION DRN APP TRACING TAPE / WIRE 3' Geosyntecl> DUKE (MIN) consultantsOF NC, PC ENEnm CYD 1300 SOUTH MINT STREET SUITE 410 HDPE CONTAINMENT PIPE T CHARLOTTE, NC 28203 USA TI PHONE: 704.227.0840 PROGRESS ROGRESS LICENSE NO.:C-3500 8" O HDPE PRIMARY PIPE 1' TITLE: LEACHATE COLLECTION SYSTEM DETAILS II CENTERING RIBS 2" O ELECTRICAL CONDUIT PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS PIPE BEDDING MATERIAL ONSITE CCR DISPOSAL FACILITY 3" SITE: (MIN) L.V. SUTTON ENERGY COMPLEX 6" WILMINGTON, NORTH CAROLINA 28401 (MIN) DESIGN BY: VMD DATE: AUGUST 2015 4,4191A 111/ 2' MIN �.��1 CAf1 '•.. DETAIL ( ) 0 ...... © ���' DRAWN BY: JWO PROJECT NO.: GC5770 LEACHATE TRANSMISSION SYSTEM FORCE MAIN _ r7r� {py _= CHECKED BY: VMD FILE: GC5770.02P290 • 2284 SCALE: 1" = 1' SIGNATUR1; 0 ` REVIEWED BY: MAO DRAWING NO.: XREF: GC5770.02X404cj FOR PERMIT ONLY, NOT FOR CONSTRUCTIONM flA �5,``• APPROVED BY: VMD 29 OF 35 DATE +'f+rrlllocl+ 5 6 7 8 rj e F A n n A G n 7 A k I L J Y J V / V 0 C I V F my GEOCOMPOSITE DRAINAGE LAYER 1 I 2 I 3 4 5 I 6 7 8 VEGETATION (TYP) 3 11 40 -mil PE TEXTURED GEOMEMBRANE VEGETATION (TYP) 10'(MIN) CCR �3 1 1.5' 5 CAP PROTECTIVE LAYER INTERMEDIATE COVER S 6" :I I T j FINAL COVER 11 SYSTEM ON 18" TOP DECK 24 r74 24 DETAIL (TYPICAL) 15 TOP DECK DRAINAGE TERRACE SCALE: 1" = 2' XREF: GC5770.02X078 RIP RAP INSTALL TYPICAL 3 FLARED END SECTION WITH TRAFFIC BEARING DROP-IN GRATE I- - O (j 00 6" THICK CONCRETE EROSION PROTECTION =III= 5% e.. a; . •e CAP PROTECTIVE LAYER GEOCOMPOSITE DRAINAGE LAYER 40 -mil HDPE TEXTURED GEOMEMBRANE VEGETATION (TYP) 1 3 25 l DETAIL (TYPICAL DOWN DRAIN PIPE INLET AT TOP DECK DRAINAGE TERRACE SCALE: 1" = 2' XREF: GC5770.02X076 DVER SIDE SLOPE DRAINAGE TERRACE VARIES VARIES (0.75' MIN) VARIES (13.5' MIN) C .����°lnllll�'L'll�iii_III� CAP PROTECTIVE LAYER (MIN) CCR 26 DETAIL (TYPICAL) 15 SIDE SLOPE DRAINAGE TERRACE SCALE: 1" = 2' XREF: GC5770.02X077 OY 1 2 3 f FINAL COVER 11 SYSTEM ON TOP DECK 24 A PE TEXTURED )MEMBRANE 9 FINAL COVER SYSTEM 24 ON SIDESLOPE 3 -III-1 I - MIM 4; GEOCOMPOSITE DRAINAGE LAYER 40 -mil HDPE TEXTURED GEOMEMBRANE �"" EXTRUSION WELD 40 -MIL GEOMEMBRANE FLAP TO FINAL COVER GEOMEMBRANE WELDED TYPICAL PLAN VIEW \/C(_CT/\TI(lAl /TVD\ N IENT SLOPE DRAINAGE TERRACE SCALE: 1" = 2' XREF: GC5770.02X083 FOR PERMIT ONLY, NOT FOR CONSTRUCTION 5 1 6 A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosyntec" DUKE considtantS OF NC, PC ENElnk%','w3%vT o 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: SURFACE WATER MANAGEMENT DETAILS I PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 1/ DESIGN BY: VMD DATE: AUGUST 2015 `k�11Y 4111 �.•'.�,rk CA,q ' . 4�Q5Sjp .,�', DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P310 42284o _ */SIGNATUR�s!�'• REVIEWED BY: MAO DRAWING NO.: ••'-0��= ,�- ...... �� , 31QF 35 DAPPROVED BY: VMD DATE *+'Y1$jt I}I11[`�"� >ya 7 8 0 C 0 E F 0 C 1 18" ID RCP "OS EL 4' RATE A 17.5 6" (TYP) 2" (TYP) SINGLE 4" ORIFICE AT INV EL 15.0 PLAN VIEW LIGHT-DUTY STEEL GRATING PANEL 15" 0 SUPPORTED INSIDE GRATING FRAME INV EL 17.5 18" ID RCP (CLASS III) INV EL 15.0 )TTnNA ()F PnNjn FI 1r, In SINGLE 4" ORIFICE INV EL 15.0 3" EXISTING 1' GROUND BOTTOM OF RISER EL 14.5 6' ELEVATION VIEW r28DETAIL DOWN DRAIN 3 PIPE TRENCH �1 (TYP) 33 32 DOwN �RAI/v plpF CCR 4 LINER 23 SYSTEM D E D■ o� DOWN DRAIN PIPE TRENCH (TYP) 33 32 _ 4 LINER 23 SYSTEM _ 3 LIGHT-DUTY STEEL GRATING PANEL 15" 0 SUPPORTED INSIDE GRATING FRAME COMPACTED FILL INV EL 17.5 6" (MIN) GROUT PIPE IN-PLACE 24" (MIN) 18 ID RCP 4" ORIFICE I DM OF POND EL 15.0 INV EL 15.0 EXISTING f 1' GROUND BOTTOM OF RISER EL 14.5 6' PROFILE VIEW 15 NORTH POND CONCRETE RISER SCALE: 1" = 2' XREF: GC5770.02X088 I LIMIT OF WASTE I 3 �1 CCR 7 ANCHOR 23 TRENCH LIMIT OF WASTE I i 3 I, 3 �1 DOWN DRAIN DOWNCHUTE 30 AT PERIMETER CHANNEL 32 12' 18" ID RCP 2" (TYP) 5 4" ORIFICE AT INV EL 16.5 PLAN VIEW LIGHT-DUTY STEEL GRATING 0 PANEL 12" O SUPPORTED LIGHT-DUTY STEEL GRATING IPANEL 12" O SUPPORTED INSIDE GRATING FRAME INSIDE GRATING FRAME INV EL 21.75 INV EL 21.75 6" (MIN GROUT PIPE IN-PLACE 24" (MIN) 18" ID RCP (CLASS III) SINGLE 4" 18" ID RCP INV EL 16.5 4" ORIFICE — ORIFICE INV / \ EL 16.5 i \ C 30TTOM OF POND EL 16.5 \ BOTTOM OF POND EL 16.5 INV EL 16.5 EXISTING 1' EXISTING GROUND GROUND BOTTOM OF RISER BOTTOM OF RISER EL 16.0 EL 16.0 6' 6' ELEVATION VIEWPROFILE VIEW ('029 DETAIL 15 SOUTH POND CONCRETE RISER SCALE: 1" = 2' XREF: GC5770.02X089 27' (PERIMETER CHANNEL) 3' 12' RIP RAP D 31 DETAIL (TYPICAL) 15 DOWN DRAIN AT TYPICAL LANDFILL PERIMETER SCALE: 1" = 4' XREF: GC5770.02X075 4) ANCHOR NC H OH GENERAL FILL OR PREPARED SUBGRADE z VARIES 3 �1 2 1% 2 DETAIL (TYPICAL DOWN DRAIN PIPE AT POND LANDFILL PERIMETER SCALE: 1" = 4' XREF: GC5770.02X085 3 4 15' (PERIMETER ACCESS ROAD) GENERAL FILL OR PREPARED SUBGRADE 23' (PERIMETER ROAD) _ 15' AT DOWN DRAIN OUTLET (PERIMETER ROAD) DOWN DRAIN OUTLET WITH FLARED END 12" (MIN) COVER EL= 24' 3 �1 RIP RAP 3 �1 STORM WATER POND POND BOTTOM EXISTING GROUND FOR PERMIT ONLY, NOT FOR CONSTRUCTION 5 6 7 r� 18" 0 CORRUGATED HDPE PIPE (TYP) 33 32 ACCESS ROAD DETAIL (TYPICAL) DOWN DRAIN DOWNCHUTE AT PERIMETER CHANNEL SCALE: 1" = 8' XREF: GC5770.02X086 T 6" TOP SOIL AND — 3 VEGETATION 11 18" (MIN) FINAL COVER 18" (MIN) PROTECTIVE SOIL LAYER SYSTEM 9 ON LANDFILL 24 SIDE SLOPE CCR DETAIL (TYPICAL) DOWN DRAIN PIPE TRENCH SCALE: 1" = 4' XREF: GC5770.02X084 PREPARED SUBGRADE 34 DETAIL 6 EARTHEN BERM SCALE: 1"=4' XREF: GC5770.02X090 M Fs C C E A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP GeosyntecO' DUKE const Rants OF NC, PC ENEInk%','..'7%vT 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: SURFACE WATER MANAGEMENT DETAILS II PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 F DESIGN BY: VMD DATE: AUGUST 2015 ++++++orrrrr* * ,••°.�� CA q ** `^y •-*eg j6-.. • �4, •� DRAWN BY: ,1W0 PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P320 - 42$4 ' *GNATUR€on', y �- REVIEWED BY:MAO DRAWING NO.: cj AFI APPROVED BY: VMD 32 OF 35 *+rrrru++ 7 8 k I L J "t J V / V 1 E I� C E 0 M d O 0 U c7 0 o - 0 Lo U Z 0 a U Q J 0 Z g L o F Z 0 F - Z) } 0 of L z L 'L Y 00 m F Lw Z I 00 0 o Y MAINTENANCE NOTES: 1. Maintain the gravel pad in a condition to prevent mud or sediment from leaving the construction site. This may require periodic top dressing with 2 -inch stone. 2. After each rainfall, inspect any structure used to trap sediment and clean it out as necessary. 3. Immediately remove all objectionable materials spilled, washed, or tracked onto public roadways. �39 DETAIL 18 TEMPORARY GRAVEL CONSTRUCTION ENTRANCE -EXIT SCALE: NTS XREF: GC5770.02X030 DIVERSION DIKE HOLD-DOWN STAKES 10' SPACING PLASTIC e CORRUGATED PIPE 4' (MIN) LEVEL SECTION STABILIZED OUTLET 4' (MIN) ISLAND OVER INLET 3 __T 1.5' (MIN) SIZING TABLE (NOTE 1) Maximum Drainage Pipe Diameter Area per Pipe (acres) (inches) 0.50 12 0.75 15 1.00 18 NOTE: 1. Temporary slope drains to be provided as required at the discretion of the contractor using the sizing table provided during waste filling operations. Once final cover is installed for phase, permanent down drains as shown on drawing 15, surface water management plan, are to be installed. MAINTENANCE NOTE: 1. Inspect the slope drain and supporting diversion after every rainfall. and promptly make necessary, repairs. When the protected area has been permanently stabilized. temporary measures may be removed, materials disposed of properly. and all disturbed areas stabilized appropriately. 4' (MIN) TOP OF HAND-COMACTED TOP OF DIVERSION r FILL (ISLAND) 1' (MIN) 0.5' (MIN) NATURAL GROUND DIVERSION CHANNEL 43 18 1.5' (MIN) ------------ -7------------ ------------------------ DETAIL TEMPORARY SLOPE DRAINS SCALE: NTS XREF: GC5770.02X096 Natural Ground MAINTENANCE NOTES: 1. Inspect rock pipe inlet protection at least weekly and after each significant ('/2 inch or greater) rainfall event and repair immediately. Remove scdirnent and restore the sediment storage area to its original dimensions when the sediment has accumulated to one-half the design depth of the trap. Placc the sediment that is removed in the designated disposal area and replace the contaminated pari of the ,gravel facing. 2. Check the structure for damage. Any riprap displaced from the stone horseshoe must be replaced imnnediately. 3. After all the sediment -producing areas have been permanently stabilized. remove the structure and all the unstable sediment. Smooth the area to blend with the adjoining areas and provide permanent ground cover (,surface Slahilizafion). 44 DETAIL 18 ROCK PIPE INLET PROTECTION SCALE: NTS XREF: GC5770.02X034 3 Pipe Outlet to Flat Area -- No Well-defined Channel IMM - ,� - Rte.• • �� Notes 1. La is the length of the riprap apron. 2. d =1.5 times the maximum stone diameter but not less than 6". 3. In a well-defined channel ex- tend the apron up the channel banks to an elevation of 6" above the maximum tailwater depth or to the top of the bank, whichever is less. 4. A filter blanket or filter fabric should be installed between the riprap and soil foundation. 5. Stone size (d50), apron length (La), and apron thickness (d) are provided in table 35 on drawing 33. Filter blanket MAINTENANCE NOTE: ■ Inspect riprap outlet structures weekly and after significant (112 inch or greater) rainfall events to see if any erosion around or below the riprap has talion place, or if stones have been dislodged. Innntediately make all needed repairs to prevent further damage. 00'40 DETAIL 18 OUTLET STABILIZATION STRUCTURE SCALE: NTS XREF: GC5770.02X031 1.5"thin, 9" mire 12" of NCDOT #5 or #57 washed stone Class B Riprop w Plan View 1,5' Filter Cloth A`'*-{ r, s � 4' to 6' Cross -Section 'View rilTer c10Tn 3 MAINTENANCE NOTES: 1. Inspect check dams and channels at least weekly and after each significant (112 inch or greater) rainfall event and repair immediately. Clean out sediment, straw, limbs, or other debris that could clog the channel when needed. 2. Anticipate submergence and deposition above the check dam and erosion from high flows around the edges of the dam. Correct all damage immediately. If significant erosion occurs between darns, additional measru'es can be taken such as, installing a protective riprap liner in that portion of the channel (Practice 6.3 1, Riprap-litre and I- m ed Channels). 3. Remove sediment accumulated behind the darns as needed to prevent damage to channel vegetation, allow the channel to drain through the stone check dam, and prevent large flows from carrying sediment over the dam. Add stones to dams as needed to maintain design height and cross section, CHANNEL MAXIMUM CHECK DAM SPACING (FT) CHECK DAM HEIGHT N1 800 2 N4 310 2 S1 800 2 S3 800 2 S6 340 2 45 DETAIL 18 CHECK DAM SCALE: NTS XREF: GC5770.02X035 2' max. at center 5 Slope surface shall be smooth before placement for proper soil contact. Stapling pattern as Min. 2" per manufacturers overlap recommendations. L If there is a berm at the top of slope, anchor upslope of the berm. Anchor in 6"x6" min. Trench and staple at 12' intervals. Min. 6" overlap. staple overlaps max. 5" spacing. Bring material down to a level area, Do not stretch blankets/matting tight -allow turn the end under 4" and staple at 12" the rolls to conform to any irregularities. intervals. For slopes less than 3HAV, rolls Lime, fertilize, and seed before installation. Planting may be placed in horizontal strips. of shrubs, trees, etc. should occur after installation. MAINTENANCE NOTES: 1. Inspect Rolled Erosion Control Products at least weekly and after each significant (112 inch or greater) rain fall event repair immediately. 2. Good contact with the ground must be maintained, and erosion must not occur beneath the RECP. 3. Any areas of the RECP that are chumaged or not in close contact with the ground shall be repaired and stapled. 4. If erosion occurs due to poorly controlled drainage- the problem shall be Fixed and the eroded area protected. 5. Monitor and repair the RECP as necessary until ground cover is established. r4l DETAIL 18 ROLLED EROSION CONTROL PRODUCT SCALE: NTS XREF: GC5770.02X032 Drape baffle material overwire strand and Extend 9 gauge wire to basin side or install T -post to anchor secure with plastic ties at posts and on wire every 12 baffle to side of basin and secure to vertical post -� 4' fMax. 9GaugeMinHigh Tension Wire Strand 3' MIN ° Variable Depth Shall Be Secured To PostTo Support Baffle Material ' ! Secure bottom of baffle to ground with ' 12"staples at 12" maximum spacing. Baffle Material If the temporary sediment basin will be converted to a permanent stormwater basin of greater depth, the baffle height should be based on the pool depth during use as a temporary sediment basin. Note: Install three (3) coir fiber baffles in basins at drainage outlets with a spacing of 114 the basin length. ✓�"-- Baffle Material 11 Gauge Landscaping Staple IIJ i, i�il�� ��L-4 I --I I 11. Steel Post 2'4S"Depth Baffle Material should be secured to the bottom and sides of basin using 12" landscape staples MAINTENANCE NOTES: 1. Inspect baffles at least once a week and after each rainfall. Make any required repairs immediately. 2. Be sure to maintain access to the baffles. Should the fabric of baffle collapse, tear, decompose, or become ineffective, replace it promptly. 3. Remove sediment deposits when it reaches half full, to provide adequate storage volume for the next rain and to reduce pressure on the baffles. Take care to avoid damaging the baffles during cleanout, and replace if damaged during cleanout operations. Sediment depth should never exceed half the designed storage depth. 4. After the contributing drainage area has been properly stabilized, remove all baffle materials and unstable sediment deposits, bring the area to grade, and stabilize it. POND BAFFLE HEIGHT (FT) NORTH 3 SOUTH 5.25 INTERIM SOUTH 3 46 DETAIL 16 POROUS BAFFLE 7 1 8 Compacted soil 2' (Note 1) I -a min '� ; 18" min (Note 1)� - -IIII dl - f ICEII lllllt + +p I -4 6' typical (Note 1) NOTE: 1. Geometry of temporary diversion shall match the geometry of the perimeter drainage channel which it continues as shown in Detail 37 on Drawing 33. MAINTENANCE NOTE: 1. Inspect temporary diversions once a week and afterevery, rainfall. Irmnediaiely remove sediment from the flow area and repair the diversion ridge. Carefully check outlets and make timely repairs as needed. When the area protected is permanently stabilized, remove the ridge and the channel to blend with the natural ground level and appropriately stabilize it. 42 DETAIL 18 TEMPORARY DIVERSIONS SCALE: NTS XREF: GC5770.02X033 Wire fence Cross -Section View Filter Steel fabric Backfill trench Natural post and compact ground f thoroughly 1C • • • •• ! : • • a'a "4 • ' • ■ ps �•. min • ■• • go g ■ / 6 a: T .•••e a +•deep 8, a. • ..: • ■ ■ min as //■r■■s rt/ • / • • • •■ IF MAINTENANCE NOTES: 1. Inspect sediment fences at least once a week and after each rainfall. Make any required repairs immediately. 2. Should the fabric of a sediment fence collapse, tear, decompose or become ineffective, replace it promptly. 3. Remove sediment deposits as necessary to provide adequate storage volume for the next rain and to reduce pressure on the fence. Take care to avoid undermining the fence during cleanout. 4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it after the contributing drainage area has been properly stabilized. K4 DETAIL 18 SEDIMENT FENCE SCALE: NTS XREF: GC5770.02X037 SCALE: NTS A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD XREF: GC5770.02X036 REV DATE DESCRIPTION DRN APP Geosyntecl> DUKE consultantsOF NC, PC ENEIR D 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: EROSION AND SEDIMENT CONTROL DETAILS I PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 ,,,,�a,,�. DESIGN BY: VMD DATE: AUGUST 2015 ., � OSSjp •!�', DRAWN BY: JWO PROJECT NO.: GC5770 - CHECKED BY: VMD FILE: GC5770.02P340 - 42284 - SIGNATuW n 0 - l REVIEWED BY: MAO DRAWING NO.: FOR PERMIT ONLY, NOT FOR CONSTRUCTION ,�,�',�;�'DM •� �` APPROVED BY: VMD 34 OF 35 DATE p�'rItIin��+`' 5 6 7 8 C E F 0 1 STEEL--'-' INLET CULVERT 46 POROUS BAFFLES 34 PLACED AT QUARTER MARKS OF POND (SEE F _...._ E 49 SKIMMER (SIZE VARIES) STONE PAD PI AN Vl FW (below skimmer) RISER STRUCTURE EMBANKMENT WOOD STAKE OR METAL POST TOP OF EMBANKMENT (C) RISER STRUCTURE (E) TRASH RACK L' MIN'. y�y7 = -^.41Eh1ERGENCY SPILLWAY (B) FREEBOARD- 49 1' MIN. iitlllli -flh Ill=ilfl illi=flJl -1 E 3, B 35 SKIMMER A Ox- I III(ll6fll`IIlIli111�JllyllSrlillflllSlflflSlflfll(Sf9lll!()11111V�lliVifl=�`S'�OA 31 Jfllg{li Iili= ILII -Siff llbf_ 1ifl llffwlfid -Ilfl= llfr fllf=f�ST F �� _ „�I-X11.11�1a41�i111X1141"liff�li6i.-ff11=1111�111>�'I���Illf=11lI�Illl.�llil�= _ •1N i A 01 POND BOTTOM (A) r� r C V 0� �y Jf /\�� \��/ /\� L.L'1d6.L/1'1!✓�f�dLL���tl/J�1 .0 CLASS B STONE PAD (4'X 4' X 1' MIN.)ANTIFL TATION BLOCK SECTIONAL VIEW CUT-OFF TRENCH 2' DEEP 1.1 NOTES 1. SEED AND PLACE MATTING FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES. 2. INSTALL A MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE STANDARD 6.65. 3. INSTALL SKIMMER AND COUPLING TO RISER STRUCTURE. 4. THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT. BETWEEN THE SKIMMER AND COUPLING. MAINTENANCE NOTES: 1. Inspect temporary sediment basins at least weekly and after each significant (1/2 inch or greater) rainfall event and repair immediate] -y. Remove sediment and restore the basin to its original dimensions when it accumulates to one-halfthc design depth. Place removed sediment in an area with sediment controls. 2. Check the embankment, spillways, and outlet for erosion darnage, and inspect the embankment for piping and settlement. Make all necessary repairs immediately. Remove all trash and other debris from the riser and pool area. 3 '.� BARREL PIPE (D) ANTI -SEEP STABILIZED COLLAR OUTLET / STONE ENERGY EMERGENCY SPILLWAY jG D ISSI PATO R BARREL PIPE 90' ELBOW Ian POND (A) ___ ---- r -. ..... . I OUTLET (E) CULVERT ROPE 15.0 20.0 EMERGENCY SPILLWAY 18" DIA 3'X 3' (INSIDE) WOOD STAKE OR METAL POST TOP OF EMBANKMENT (C) RISER STRUCTURE (E) TRASH RACK L' MIN'. y�y7 = -^.41Eh1ERGENCY SPILLWAY (B) FREEBOARD- 49 1' MIN. iitlllli -flh Ill=ilfl illi=flJl -1 E 3, B 35 SKIMMER A Ox- I III(ll6fll`IIlIli111�JllyllSrlillflllSlflflSlflfll(Sf9lll!()11111V�lliVifl=�`S'�OA 31 Jfllg{li Iili= ILII -Siff llbf_ 1ifl llffwlfid -Ilfl= llfr fllf=f�ST F �� _ „�I-X11.11�1a41�i111X1141"liff�li6i.-ff11=1111�111>�'I���Illf=11lI�Illl.�llil�= _ •1N i A 01 POND BOTTOM (A) r� r C V 0� �y Jf /\�� \��/ /\� L.L'1d6.L/1'1!✓�f�dLL���tl/J�1 .0 CLASS B STONE PAD (4'X 4' X 1' MIN.)ANTIFL TATION BLOCK SECTIONAL VIEW CUT-OFF TRENCH 2' DEEP 1.1 NOTES 1. SEED AND PLACE MATTING FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES. 2. INSTALL A MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE STANDARD 6.65. 3. INSTALL SKIMMER AND COUPLING TO RISER STRUCTURE. 4. THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT. BETWEEN THE SKIMMER AND COUPLING. MAINTENANCE NOTES: 1. Inspect temporary sediment basins at least weekly and after each significant (1/2 inch or greater) rainfall event and repair immediate] -y. Remove sediment and restore the basin to its original dimensions when it accumulates to one-halfthc design depth. Place removed sediment in an area with sediment controls. 2. Check the embankment, spillways, and outlet for erosion darnage, and inspect the embankment for piping and settlement. Make all necessary repairs immediately. Remove all trash and other debris from the riser and pool area. 3 '.� BARREL PIPE (D) ANTI -SEEP STABILIZED COLLAR OUTLET 48 DETAIL 18 SEDIMENT BASIN SCALE: NTS XREF: GC5770.02X038 Cross- ctiart 12" rrdin. of E OT min,�- 51 �c- #57 4Yc31 store 2 ---- --- ---------------- -- AL �"- 1.5 rnlrt ---_ --- 361 cu ft acre, }, +V r _ rA� I - - ,, 11HT1 V, 4, min br c Design seed ��- overfill 6m for top ;r. settlement Plan View Weir Length _ _ E�It 7to ------ mein)ed top ofnwx �� fitk ---- - - - - -- NThtrql Gmund filter 3. f abrin rimy. MAINTENANCE NOTES: 1. INSPECT TEMPORARY SEDIMENT TRAPS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT ('/2 INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT, AND RESTORE THE TRAP TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. PLACE THE SEDIMENT THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA, AND REPLACE THE PART OF THE GRAVEL FACING THAT IS IMPAIRED BY SEDIMENT. 2. CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT IS A MINIMUM OF 1.5 FEET BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT TO SLIGHTLY ABOVE DESIGN GRADE. ANY RIPRAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY. 3. AFTER ALL SEDIMENT -PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE THE STRUCTURE AND ALL UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND WITH THE ADJOINING AREAS, AND STABILIZE PROPERLY (REFERENCES: SURFACE STABILIZATION). 52 DETAIL 18 TEMPORARY SEDIMENT TRAP SCALE: NTS XREF: GC5770.02X042 PVC End Cap Ll Arm Assembly PERSPECTIVE VIEW PVC Vent PVC Elbow pipe PVC End Cap Schedule 40 PVC Tee PVC Pipe PVC Pipe 1" Holes in Underside Flexible Hose C "C" Enclosure .iter Entry Unit PVC Tee Schedule 40 FVC Pipe Orifice Plate 5 Bottom Surface END VIEW FRONT VIEW MAINTENANCE NOTES: 1. Inspect skimmer sediment basins at least weekly and after each significant (one-half inch or greater) rainfall event and repair immediately. Pull the skimmer to one side so that the sediment underneath it can be excavated. Make sure vegetation growing in the bottom of the basins does not hold down the skimmer. 2. If the skimmer is clogged with trash and there is water in the basin, usually jerking on the rope will make the skimmer bob up and down and dislodge the debris and restore flow. If this does not work, pull skimmer over to the side of the basin and remove the debris. Also check the orifice inside the skimmer to see if it is clogged; if so remove debris. 3. If the skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction cleared with a plumber's snake or by flushing with water. Be sure and replace the orifice before repositioning the skimmer. 4. Freezing weather can result in ice forming in the basin. Some special precautions should be taken in the winter to prevent the skimmer from plugging with ice. POND POND BOTTOM EMERGENCY SPILLWAY TOP OF EMBANKMENT BARREL PIPE RISER STRUCTURE CLEANOUT ELEVATION POND (A) (B) (C) (D) (E) (F) NORTH 15.0 20.0 22.0 18" DIA 3'X 3' (INSIDE) 15.2 SOUTH 16.5 23.0 24.0 18" DIA 3'X 3' (INSIDE) 16.7 INTERIM SOUTH 15.0 19.0 20.0 12" DIA 3'X 3' (INSIDE) 15.1 48 DETAIL 18 SEDIMENT BASIN SCALE: NTS XREF: GC5770.02X038 Cross- ctiart 12" rrdin. of E OT min,�- 51 �c- #57 4Yc31 store 2 ---- --- ---------------- -- AL �"- 1.5 rnlrt ---_ --- 361 cu ft acre, }, +V r _ rA� I - - ,, 11HT1 V, 4, min br c Design seed ��- overfill 6m for top ;r. settlement Plan View Weir Length _ _ E�It 7to ------ mein)ed top ofnwx �� fitk ---- - - - - -- NThtrql Gmund filter 3. f abrin rimy. MAINTENANCE NOTES: 1. INSPECT TEMPORARY SEDIMENT TRAPS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT ('/2 INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT, AND RESTORE THE TRAP TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. PLACE THE SEDIMENT THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA, AND REPLACE THE PART OF THE GRAVEL FACING THAT IS IMPAIRED BY SEDIMENT. 2. CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT IS A MINIMUM OF 1.5 FEET BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT TO SLIGHTLY ABOVE DESIGN GRADE. ANY RIPRAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY. 3. AFTER ALL SEDIMENT -PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED, REMOVE THE STRUCTURE AND ALL UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND WITH THE ADJOINING AREAS, AND STABILIZE PROPERLY (REFERENCES: SURFACE STABILIZATION). 52 DETAIL 18 TEMPORARY SEDIMENT TRAP SCALE: NTS XREF: GC5770.02X042 PVC End Cap Ll Arm Assembly PERSPECTIVE VIEW PVC Vent PVC Elbow pipe PVC End Cap Schedule 40 PVC Tee PVC Pipe PVC Pipe 1" Holes in Underside Flexible Hose C "C" Enclosure .iter Entry Unit PVC Tee Schedule 40 FVC Pipe Orifice Plate 5 Bottom Surface END VIEW FRONT VIEW MAINTENANCE NOTES: 1. Inspect skimmer sediment basins at least weekly and after each significant (one-half inch or greater) rainfall event and repair immediately. Pull the skimmer to one side so that the sediment underneath it can be excavated. Make sure vegetation growing in the bottom of the basins does not hold down the skimmer. 2. If the skimmer is clogged with trash and there is water in the basin, usually jerking on the rope will make the skimmer bob up and down and dislodge the debris and restore flow. If this does not work, pull skimmer over to the side of the basin and remove the debris. Also check the orifice inside the skimmer to see if it is clogged; if so remove debris. 3. If the skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction cleared with a plumber's snake or by flushing with water. Be sure and replace the orifice before repositioning the skimmer. 4. Freezing weather can result in ice forming in the basin. Some special precautions should be taken in the winter to prevent the skimmer from plugging with ice. POND SKIMMER SIZE NUMBER OF SKIMMERS NORTH 8 -INCH 2 SOUTH 8 -INCH 2 INTERIM SOUTH 8 -INCH 2 SEDIMENT TRAP ID # DISTURBED AREA [AC] SEDIMENT STORAGE [CF] WEIR LENGTH [FT] 1 0.73 2628 4 2 1.24 4464 6 3 0.69 2484 4 4 0.44 1584 4 5 0.73 2628 4 6 0.56 2016 4 7 0.36 1296 4 8 1.14 4104 6 9 2.29 8244 8 10 2.29 8244 8 11 0.52 1872 4 12 1.47 5292 6 13 0.41 1476 4 14 2.29 8244 8 OY 1 2 3 49 DETAIL 35 SKIMMER SCALE: NTS XREF: GC5770.02X039 R 7 r� SEEDING MIXTURE AND RATE SEEDING DATES SOIL AMENDMENTS MULCH MAINTENANCE WARM SEASON GERMAN MILLET BY SOIL TEST OR: Straw REFERTILIZE IF GROWTH ' RYE (GRAIN) 120 LB/ACRE Should come from wheat or oats, Jute net APPLY 4000 LB/ACRE STRAW. INADEQUATE. RESEED, REFERTILIZE, spread by hand or machine; must DECEMBER 1 - APRIL 15 2000 LB/ACRE AGRICULTURAL LIMESTONE ANCHOR STRAW WITH TACKIFIER AND MULCH IMMEDIATELY ' ANNUAL LESPEDEZA (KOBE) 50 LB/ACRE 5-6 tons Air dry OR NETTING. FOLLOWING EROSION OR OTHER PRIMARY STABILIZATION 12/1-4/1 750 LB/ACRE 10-10-10 FERTILIZER Excelsior DAMAGE PRIMARY STABILIZATION by hand. Not for use in fine turf. BY SOIL TEST OR: 0.5-1 tons REFERTILIZE IF GROWTH Also referred to as wood cellulose. mat APPLY 4000 LB/ACRE STRAW. INADEQUATE. RESEED, REFERTILIZE, ' GERMAN MILLET 40 LB/ACRE APRIL 15 - AUGUST 15 2000 LB/ACRE AGRICULTURAL LIMESTONE ANCHOR STRAW WITH TACKIFIER AND MULCH IMMEDIATELY 35 cubic yards Air dry, shredded or Apply with mulch blower, chip OR NETTING. FOLLOWING EROSION OR OTHER hammer -milled, or chips. handler, or by hand. Do not use ' 750 LB/ACRE 10-10-10 FERTILIZER DAMAGE asphalt tack. Corn stalks BY SOIL TEST OR: Cut or shredded in 4-6 REFERTILIZE IF GROWTH in. lengths. APPLY 4000 LB/ACRE STRAW. INADEQUATE. RESEED, REFERTILIZE, ' RYE (GRAIN) 120 LB/ACRE AUGUSTS 15 - DECEMBER 30 2000 LB/ACRE AGRICULTURAL LIMESTONE ANCHOR STRAW WITH TACKIFIER AND MULCH IMMEDIATELY contain mature seed. OR NETTING. FOLLOWING EROSION OR OTHER ' 750 LB/ACRE 10-10-10 FERTILIZER DAMAGE Material Rate Per Acre Quality Notes Organic ]Mulches WARM SEASON GERMAN MILLET SETARIA ITALICA Straw 1-2 tons Dry, unchopped, Should come from wheat or oats, Jute net Cover area unweathered; avoid spread by hand or machine; must 8/15-4/15 BIG BLUESTEM weeds. be tacked down. Wood chips 5-6 tons Air dry Treat with 12 lbs nitrogen/ton. Apply 3.5 PRIMARY STABILIZATION 12/1-4/1 with mulch blower, chip handler, or Excelsior Cover area PRIMARY STABILIZATION by hand. Not for use in fine turf. Wood fiber 0.5-1 tons 2.5 Also referred to as wood cellulose. mat May be hydroseeded. Do not use in Fiberglass roving 0.5-1 tons Continuous fibers of hot, dry weather. Bark 35 cubic yards Air dry, shredded or Apply with mulch blower, chip hammer -milled, or chips. handler, or by hand. Do not use agent. asphalt tack. Corn stalks 4-6 tons Cut or shredded in 4-6 Apply with mulch blower or by hand. in. lengths. Not for use in fine turf. Sericea 1-3 tons Green or dry; should lespedeza contain mature seed. seed -bearing BOTANICAL NAME RATE (LB/AC) PURPOSE stems WARM SEASON GERMAN MILLET SETARIA ITALICA Nets and Mats' NURSE CROP 4/15-8/15 COOL SEASON Jute net Cover area Heavy, uniform; woven Withstands waterflow, Best when 8/15-4/15 BIG BLUESTEM of single jute yarn. used with organic mulch. Fiberglass net Cover area SWITCHGRASS Withstands waterflow. Best when 3.5 PRIMARY STABILIZATION 12/1-4/1 used with organic mulch. Excelsior Cover area PRIMARY STABILIZATION Withstands waterflow. (wood fiber) CHASMANTHIUM LATIFOLIUM 2.5 PRIMARY STABILIZATION mat Fiberglass roving 0.5-1 tons Continuous fibers of Apply with a compressed air ejector. drawn glass bound Tack with emulsified asphalt at a together with a non-toxic rate of 2 5-3 5 gal/1,000 sq ft. agent. Chemical Stabilizers2 Aquatain follow Aerospray manufacturer's Curasol AK specifications Petroset SB Terra Tack Crust 500 Genaqua 743 M-145 ''Refer to Practice No. 6.30, Grass Lined Channels. ?Use of trade names does not imply endorsement of product. 4; 53 DETAIL 18 MULCHING SCALE: 1" = 1' XREF: GC5770.02X043 (MULCHING) 50 DETAIL 18 TEMPORARY SEEDING SCALE: NTS XREF: GC5770.02X040 COMMON NAME BOTANICAL NAME RATE (LB/AC) PURPOSE OPTIMAL PLANTING DATES WARM SEASON GERMAN MILLET SETARIA ITALICA 10 NURSE CROP 4/15-8/15 COOL SEASON RYE GRAIN SECALE CEREALE 10 NURSE CROP 8/15-4/15 BIG BLUESTEM ANDROPGON GERADII / EARL 7 PRIMARY STABILIZATION 12/1-5/1 SWITCHGRASS PANICUM VIRGATUM / BLACKWELL, SHELTER, OR CARTHAGE 3.5 PRIMARY STABILIZATION 12/1-4/1 VIRGINIA WILD RYE ELYMUS VIRGINICUS 6 PRIMARY STABILIZATION 2/15 - 3/20 AND 9/1- 11/1 INDIAN WOODOATS CHASMANTHIUM LATIFOLIUM 2.5 PRIMARY STABILIZATION 2/15 - 3/20 AND 9/1 - 11/1 51 DETAIL 18 PERMANENT SEEDING SCALE: NTS XREF: GC5770.02X041 A DEC 2015 REVISED PER NCDEQ COMMENTS JWO VMD REV DATE DESCRIPTION DRN APP Geosyntec" D UKE COriSLIItSI1tS OF NC, PC ENEnR%(.v7%vT 1300 SOUTH MINT STREET, SUITE 410 CHARLOTTE, NC 28203 USA PHONE: 704.227.0840 PROGRESS LICENSE NO.:C-3500 TITLE: EROSION AND SEDIMENT CONTROL DETAILS II PROJECT: CONSTRUCTION PERMIT APPLICATION DRAWINGS ONSITE CCR DISPOSAL FACILITY SITE: L.V. SUTTON ENERGY COMPLEX WILMINGTON, NORTH CAROLINA 28401 DESIGN BY: VMD DATE: AUGUST 2015 `l�11911i 11 , •�`;•� S` CAR Q,FS�� ./, DRAWN BY: JWO PROJECT NO.: GC5770 CHECKED BY: VMD FILE: GC5770.02P340 42284 SIGNATU ten , ` C7 ' REVIEWED BY: MAO DRAWING NO.: AP FOR PERMIT ONLY, NOT FOR CONSTRUCTION 0" DIaM,.0 APPROVED BY: VMD 35 OF 35 DATE �� 5 6 7 8 C 0 E F ATTACHMENT E FINANCIAL ASSURANCE V. Off -Site Clay a. Area to be capped (1 acre=4840yd2) b. Depth of clay needed (6" = 0.16 yd) acres x 4840 yd2/acre = inches x 1 yd/ 36 inches = 0 yd 0.00 yd Geosyntec "' Facility Name: L.V. Sutton Energy Complex, Onsite CCR Landfill Date: 11/23/15 Phase 1 (Cells 3-8) Calculated By: VMD CMI:SLIItantS Permit No.: Checked By: JC 1300 South Mint Street, Suite 410 Facility Address: Sutton Steam Plant Road Charlotte, North Carolina 28203 Wilmington, North Carolina Revision No.: 0 phone - 704.227.0861 Facility Owner: Duke Energy Progress, LLC Project No.: GC5770 Phase No.: 02 www.geosyntec.com CLOSURE COSTS: I. Native Soil for Slope and Fill (Site Preparation) a. Area to be capped 56.1 acre 56.1 acre b. Unit cost for recompacting and grading 750 / acre 750.00 / acre C. Cost for recompacting and grading (a x b) $42,075 d. Unit cost for subgrade preparation 500 / acre 500.00 / acre e. Cost for subgrade preparation (a x d) $28,050 o. Total native soil cost (c + e) $70.125.00 II. Topsoil a. Area to be capped 56.1 acres x 4840 yd2/acre = 271,524 yd b. Depth of topsoil needed 6 inches x 1 yd/ 36 inches = 0.17 yd C. Quantity of topsoil needed (a x b) 45,254 yd d. Percentage of soil from off-site 100% 100% e. Excavation unit cost (on-site material) $5.00 $5.00 /yd3 f. Purchase unit cost (off-site material) $13.00 $13.00 /yd3 g. Delivery Cost (off-site material) $12.00/yd3 for 5 mil RT $12.00 /yd3 h. Placement/Spreading unit cost included in e. included in e. /yd3 i. Compaction unit cost included in e. included in e. /yd3 j. Total on-site topsoil unit cost (e + h + i) $5.00 /yd3 k. Total off-site topsoil unit cost (f+ g + h + i) $25.00 /yd3 I. Total on-site topsoil cost p x (1-d) x c] $0 M. Total off-site topsoil cost (c x d x k) $1,131,350 n. Percent compaction 10% 10% o. Total topsoil cost (I + m) (1 + n) $1.244.485.00 III. Drainage Layer a. Area to be capped 56.1 acres x 4840 yd2/acre = 271,524 yd' b. Depth of sand or gravel needed 0 inches x 1 yd136 inches= 0.00 yd C. Quantity of sand or gravel needed (a x b) 0 yd d. Purchase unit cost $6.90 $6.90 /yd3 e. Delivery cost (for off-site material) $7.85/yd3 for 10 mil RT $7.85 /yd3 f. Spreading unit cost $1.39 $1.39 /yd3 g. Compaction unit cost $0.12 $0.12 /yd3 h. Percent compaction sand = 10%, gravel = 5% 10 % i. Total drainage layer unit cost (d + e + f+ g) $16.26 /yd3 j. Total drainage layer cost is x i x (1+h)] 0.0 IV.On-Site Clay a. Area to be capped 56.1 acres x 4840 yd2/acre = 271,524 yd b. Depth of clay needed 0 inches x 1 yd/ 36 inches = 0.00 yd C. Quantity of clay needed (a x b) 0 yd d. Excavation unit cost $2.50 $2.50 /yd3 e. Placement/Spreading unit cost $1.25 $1.25 /yd3 f. Compaction unit cost $0.85 $0.85 /yd3 g. Total on-site clay unit cost (d + e + f + g) $4.60 /yd3 h. Percent compaction 25% 25 % i. Total on-site clay cost [c x g x (1 + h)] $0.00 V. Off -Site Clay a. Area to be capped (1 acre=4840yd2) b. Depth of clay needed (6" = 0.16 yd) acres x 4840 yd2/acre = inches x 1 yd/ 36 inches = 0 yd 0.00 yd Facility Name: L.V. Sutton Energy Complex, Onsite CCR Landfill Phase 1 (Cells 3-8) Permit No.: Facility Address: Sutton Steam Plant Road Date: Calculated By: Checked By: Wilmington, North Carolina Revision No Facility Owner: Duke Energy Progress, LLC Project No Phase No C. Quantity of clay needed (a x b) d. Purchase unit cost e. Delivery cost (for off-site material) f. Spreading unit cost g. Compaction unit cost h. Total off-site clay unit cost i. Percent compaction j. Total on-site clay cost VI. Drainage Pipe 11/23/15 VMD JC 0 GC5770 02 (a x b) $5.35 $7.85/yd3 for 10 mil RT $1.39 $0.82 (d+e+f+g) 25% [cxhx(1+i)] Geosyntec "' consultants 1300 South Mint Street, Suite 410 Charlotte, North Carolina 28203 phone - 704.227.0861 www.geosyntee.com 0 yd $5.35 /yd3 $7.85 /yd3 $1.39 /yd3 $0.82 /yd3 $15.41 /yd3 25 % U-00 e. a. Length of pipe needed 4958.2 4958.2 LF b. Pipe unit cost $4.22 $4.22 /LF C. Trenching and backfilling cost $0.99 $0.99 /LF d. Total drainage pipe unit cost (b + c) $5.21 /LF e. Total drainage pipe cost (a x d) $25.832.22 VII. Synthetic Membrane Installation unit cost e. a. Area to be capped with 60 -mil HDPE 56.1 acres x 43560 ft2/acre = 2,443,716 ft2 b. Purchase unit cost $0.65 $0.65 /ft2 C. Taxes unit cost $0.03 $0.03 /ft2 d. Installation unit cost $0.16 $0.16 /ft2 e. Total synthetic membrane unit cost (b + c + d) $0.84 /ft2 f. Total synthetic membrane cost (a x e) $2.052.721.44 VIII. Geotextile Filter Fabric a. Quantity of filter fabric needed b. Purchase unit cost C. Taxes unit cost d. Installation unit cost e. Total synthetic membrane unit cost f. Total geotextile filter fabric cost VIII -a. Geonet Composite a. Quantity of Geonet Composite needed b. Purchase unit cost C. Taxes unit cost d. Installation unit cost e. Total geonet composite unit cost f. Total geonet composite cost VIII -b. Geosynthetic Clay Liner a. Quantity of GCL needed b. Purchase unit cost C. Taxes unit cost d. Installation unit cost e. Total GCL unit cost f. Total GCL cost 0_0 acres x 43560 ft2/acre = $0.25 $0.00 $0.00 (b+c+d) (a x e) Notes & Guidance Values 56.1 acres x 43560 ft2/acre = $0.64 $0.03 $0.16 (b+c+d) (a x e) 0_0 acres x 43560 ft2/acre = $0.48 $0.03 $0.15 (b+c+d) (a x e) 0 ft2 $0.25 /ft2 $0.00 /ft2 $0.00 /ft2 $0.25 /ft2 $0.00 2,443,716 ft2 $0.64 /ft2 $0.03 /ft2 $0.16 /ft2 $0.83 /ft2 $2.028.284.28 0 ft2 $0.48 /ft2 $0.03 /ft2 $0.15 /ft2 $0.66 /ft2 $0.00 IX. Soil Admixture a. Area to be capped 56.1 acres x 4840 yd2/acre = 271,524 yd b. Soil admixture unit cost $2.57 $2.57 /yd2 C. Total soil admixture cost (a x b) $697.816.68 XI. Soil Testing / Construction Quality Assurance a. Number of acres to be capped 56.1 56.1 acres b. Testing unit cost Geosyntec "' Facility Name: L.V. Sutton Energy Complex, Onsite CCR Landfill Date: 11/23/15 C. Total Soil Testing Unit Cost (a x b) Phase 1 (Cells 3-8) Calculated By: VMD WfI:SLIItantS Permit No.: 56.1 Checked By: JC 1300 South Mint Street, Suite 410 Facility Address: Sutton Steam Plant Road (a x b) $84.150.00 Charlotte, North Carolina 28203 Wilmington, North Carolina Revision No.: 0 phone - 704.227.0861 Facility Owner: Duke Energy Progress, LLC Project No.: GC5770 0 0 /acre d. Length of LFG detection probe in linear feet Phase No.: 02 www.geosyntec.com X. Protective Soil Cover / Vegetative Cover $5,000 /event f. LFG detection probe unit cost $40.00 a. Area to be capped 56.1 acres x 4840 yd2/acre = 271,524 yd b. Depth of soil needed 24 inches x 1yd/36 inches= 0.67 yd C. Quantity of soil needed (a x b) 181,016 yd' d. Percentage of soil from off-site $1,225 per well 100% 100% e. Excavation unit cost (on-site material) d. Additional well length of 50' $5.00 $5.00 /yd3 f. Purchase unit cost (off-site material) $22.00 /LF $13.00 $13.00 /yd3 g. Delivery Cost (off-site material) (b x c) $12.00/yd3 for 5 mil RT $8.00 /yd3 h. Placement/Spreading unit cost XV. Mobilization/demobilization included in e. included in e. /yd3 i. Compaction unit cost $75.000.00 included in e. included in e. /yd3 j. Total on-site soil unit cost assumes $2,500/acre (e + h + i) $5.00 /yd3 k. Total off-site soil unit cost (f+ g + h + i) $21.00 /yd3 I. Total on-site soil cost p x (1-d) x c] $0 M. Total off-site soil cost (c x d x k) $3,801,336 n. Percent compaction 10% 10% 0. Total protective soil cover cost (i + m) ' (1 + n) $4.181.469.60 XI. Soil Testing / Construction Quality Assurance a. Number of acres to be capped 56.1 56.1 acres b. Testing unit cost (Includes density & permeability tests and technician) $10,000.00 $10,000.00 /acre C. Total Soil Testing Unit Cost (a x b) $561.000.00 XII. Vegetative Cover a. Number of acres to be vegetated 56.1 56.1 acres b. Unit cost for preparation, seeding, and fertilization $1,500.00 $1,500.00 /acre C. Total Vegetative Cover Cost (a x b) $84.150.00 XIII. Landfill Gas (LFG) Management System a. Number of acres of landfill to be closed 56.1 56.1 acres b. Number of LFG detection probes to be installed 0 0 probes C. Average number of LFG vents required per acre 0 0 /acre d. Length of LFG detection probe in linear feet 0 100 LF e. Average cost per LFG vent $5,000.00 $5,000 /event f. LFG detection probe unit cost $40.00 $40.00 /LF g. Total cost for LFG vents (a x c x e) $0 h. Total cost for LFG detection probes (b x d x 0 $0 i. Total gas management cost (g + h) $0.00 XIV. Groundwater monitoring system a. Hydrogeologic study $10,000 or as needed $0 b. Monitoring well construction/well $1,225 per well $1,225.00 /well C. Number of wells to be installed 0 0 wells d. Additional well length of 50' 0 0 LF e. Unit cost for additional well length over 50' $22.00 $22.00 /LF f. Total additional cost for well length over 50' (e x d) $0 g. Total monitoring well construction cost (b x c) $0 h. Total Groundwater monitoring system cost (a + e + r) $0.00 XV. Mobilization/demobilization a. Cost for mobilization/demobilization assumes 1 event $75.000.00 XVI. Survey and deed notation a. Cost for survey and deed notation assumes $2,500/acre 5140.250.00 Facility Name: L.V. Sutton Energy Complex, Onsite CCR Landfill Date: Phase 1 (Cells 3-8) Calculated By: Permit No.: Checked By: Facility Address: Sutton Steam Plant Road Wilmington, North Carolina Revision No.: Facility Owner: Duke Energy Progress, LLC Project No.: Phase No.: XVII. Closure Certification a. Closure certification costs XVIII. Miscellaneous Costs to Close a. Erosion Control b. Storm Water Control (diversion berms and drainage ditches) C. Drainage Layer Piping d. Anchor Trench e. Tie-in Seams f. Geosynthetic Boots Total Construction Closure Costs Total Unadjusted Closure Costs City Cost Index (CCI) Total Adjusted Closure Costs CCI x (I..XIV) Closure Cost -Estimate Subtotal (Total adj. closure costs +XV + XVI + XVII + XVIII) Contingency (10%) Engineering Fees Permitting and Construction Documents Total Closure Cost (Phase 1) Total Area to be capped Approximate closure cost per acre Notes: Guidance values attained from similar projects. Material Costs for Geosynthetics include Delivery. 11/23/15 VMD JC 0 GC5770 02 $35,500 or as needed $50,000 or as needed Geosyntec "' COnsultants 1300 South Mint Street, Suite 410 Charlotte, North Carolina 28203 phone - 704.227.0861 www.geosyntee.com $35.000.00 550.000.00 550.000.00 50_00 50_00 50_00 50_00 10.945.884 96.4 510.551.832 $1,090,208 $109,021 12.101.311 56.1 acres $215,710 /acre Facility Name: L.V. Sutton Energy Complex, Onsite CCR Landfill Phase 1 Permit No.: Facility Address: Sutton Steam Plant Road Wilmington, North Carolina Facility Owner: Duke Energy Progress, LLC POST -CLOSURE COSTS: Date: 11/23/15 Calculated By: VMD Checked By: JC GeosMtec l> consultants 1300 South Mint Street, Suite 410 Charlotte, North Carolina 28203 Revision No.: 0 phone - 704.227.0861 Project No.: GC5770 Phase No.: 02 www.geosyntec.com I. Groundwater Monitoring Notes & Guidance Values a. Total number of monitoring wells 9 9 wells b. Number of sampling events per year 2 sampling events per year 2 events C. Monitoring and analysis costs per sample $1,750 $1,750 /sample d. Miscellaneous Engineering Fees $10,000 or as required $10,000 /year e. Total annual monitoring costs [(a x b x c) +d] $41,500 /year f. Post -closure period 30 30 years g. Total cost for post -closure period (e x t) $1.245.000.00 II. Landfill Gas Monitoring a. Frequency of testing (4 events per year) 0 events/year b. Cost of sampling per event $1,000.00 $1,000.00 /event C. Total LFG Monitoring unit cost per year (a x c) $0.00 /year d. Post -closure period 30 30 years e. Total cost for post -closure period (d x e) 50.00 III. Leachate Management a. Private disposal unit cost $0.00 $0.00 /gal b. POTW disposal unit cost $0.10 $0.10 /gal C. Direct discharge to a POTW unit cost $0.00 $0.00 /gal d. Amount of leachate generated 50,000 50,000 gal/yr e. Load/unload unit cost $150 $150.00 /truck f. Capacity of truck 5,500 5,500 gallons g. Number of trucks required per year (d + f) 9 trucks/year h. Distance over 5 miles of hauling (one way) 10 10 miles i. Cost of hauling per mile $1.50 $1.50 /mile j. Total cost for loading / unloading and hauling f(e x g) + (h x i)] $1,378.64 /year k. Total annual cost for Private Disposal (a x d) $0.00 /year I. Total annual cost for POTW Disposal (delivered) f(b x d) + j] $6,378.64 /year M. Total annual cost for POTW Disposal (direct) (c x d) $0 /year n. Total leachate management cost (k or 1 or m) $6,378.64 /year o. Post -closure period 30 30 years p. Total cost for post -closure period (n x o) $191.359.09 IV. Routine Maintenance and Repairs a. Mowing frequency 2 2 visits/year b. Area to be maintained (acres) 56.1 56.1 acres C. Mowing unit cost per visit $80 $80 /acre/visit d. Total mowing cost per year (a x b x c) $8,976 /year e. Fertilizer unit cost $500 $500 /acre f. Total fertilizer cost per year (b x e) $28,050 /year g. Number of years to reseed (max 3 years) 3 3 years h. Area to reseed (acres) 18.70 18.70 acres i. Reseeding unit cost $1,786 $1,786 /acre j. Total reseeding cost (g x h x i) $100,195 k. Mobilization/demobilization cost per year $150 $150 /year 1. Total maintenance and repairs cost per year (d + f + k) $37,176.00 /year m. Post -closure period 30 30 years n. Total cost for post -closure period f(m x 0 +j] 51.215.475 V. Vector and Rodent Control a. Total vector and rodent control costs per year $2,000 or as required $2,000.00 /year b. Post -closure period 30 30 years C. Total cost for post -closure period (a x b) 560=000 Total Post -Closure Costs Total Unadjusted Post -Closure Costs $2,711,833.69 City Cost Index (CCI) 96.4 Total Adjusted Post -Closure Costs $2,614,207.68 CCI x (I..V) Contingency (10%) $261,420.77 Total Post -Closure Cost -Estimate (Phase 1) 52.875.628 ATTACHMENT F ASH TRANSPORT CONTINGENCY PLAN (� DUKE ENERGY November 12, 2015 North Carolina Department of Environmental Quality Attn: Mr. Larry Frost Division of Waste Management Solid waste Section 2090 U.S. Highway 70 5wannanoa, NC 28778 Re: Ash Transportation Information Plan SuBmittal L.V. Sutton Plant New Hanuvcr County, North Carolina Dear Mr. Frost, 410 S. Wilmington Street. Kaleigh. NC 27601 Mailing Address Mail Code NC 14, Raleigh, NC 27601 919-546-7663 919-546-6302 (fax) Attached you will find the Ash Transportation Information Plan (Rev. 0) for the Duke Energy L.V. Sutton Plant located in New Hanover County. This intormadon is Being submitrd ill rebpvnbc to a verbal request trom the Solid Waatc SEI-tiU i (SEUlun) in addition to item #li from the un -Site Landfill Permit to Construct Technical Review comments from the Section to Duke Energy on uctoBer 7, 2015 which reads: 17. The Section requests a copy of Duke Energy's contingency plan for spin prevention/emergency action for the transportation of coal ash off the Surron properry. L;keW;se, the Section requests nor;f c.ur;un from Duke Energy when con/ ash begins to be moved off site, ;r,cluding mode of transportation and ultimate destination. Ash hauling via trucks trom the Suttvii Plaut tv tfic Brickhaven btructural till site near Moncure began on OctvBer 30, 2015. Therefore, the attached plan has been created for truck transport. Rail transport is not anticipated to begin until late December or early next year. The attached will Be updated and submitted to DEQ prior to transporting ash via rail. This submittal is for information only and does not require a tormal response trom the Section. Please do not hesitate to contact me at 919-546-7863 or icjfin.tFjCpter@dakc-energy.com it you have any questions, wnimCnts, or concerns. Sinc , J n Toepfer, P.E. Lead Engineer Waste and Groundwater Programs Mr. Carry Frust letter Ncjvembcr 11, 2u15 Aiiachmenib: L.V. Sutton Plant Ash Transportation Information Plan Rev u; 11/11/Zu15 cc (via e-mail): Ed Mussler, NCDEQ Ed Sullivan, Duke Energy Jeremy Pruett, Duke Energy RicFiard BAt.1, Duke Energy Steve bordy, Duke Energy Ash Transportation Information Plan L.V. Sutton Plant 801 Sutton Steam Plant Road, Wilmington -North Carolina New Hanover County DUKE ENERGY Created by: Ash Basin Strategic Action Team (ABSAT) November 11, 2015 — Revision 0 Duke Energy DUKE Sutton Transportation Plan ENERGY" 1.0 Sutton Steam Station Ash Transportation Information The scope of work in this ash transportation plan (Plan) outlines information for the support of excavation and transportation activities from the 1971 and 1984 Dry Ash Stacks (see Figures 1 and 2) located at the Duke Energy L.V. Sutton Plant to the Brickhaven Structural Fill site (Brickhaven) located in Moncure, North Carolina. Excavation, loading, and transportation services are provided by Charah. The work area utilizes existing Ash Basin roads along with a newly constructed roads and load out area inside the 1971 basin. Ash from the facility will be hauled by tuck to Brickhaven as outlined in the Coal Ash Excavation Plan acknowledged by the North Carolina Department of Environmental Quality (NCDEQ) on February 2,2015. M4 air Baso „ 1 1371 f9r Briar -Jr-e to Ash tmmpent W Mily 3.tmkp;le Figure 1— Sutton Steam Plant General Site Plan Page 2 of 7 DUKE �. ENERGY.: Duke Energy Sutton Transportation Plan Figure 2 — Sutton Steam Plant On-site Haul Route 2.0 Excavation and Loading Charah will excavate coal combustion products (CCPs) from the 1971 and 1984 Ash Basins and load highway dump trucks for offsite removal. Excavation, loading, and hauling activities at the facility will occur in accordance with required regulatory permits. 2.1 General truck loadina activities include but are not limited to: Erosion and Sediment Control (E&SC) measures will be maintained throughout the project. Storm water run-off from the Ash Stacks, haul roads, load -out pad/road are contained within the ash basin system. Charah will conduct work in accordance with their Health and Safety Plan (HASP), including the Material Transport Job Hazard Analysis (JHAs). The HASP and JHAs have detailed procedures to mitigate potential hazards anticipated for the project. Excavation of material from the 1971 and 1984 dry ash stack will be conducted with an excavator and loaded in off-road dump trucks for transport to the daily load -out stock pile. Off-road dump trucks will enter the load -out area via the existing roads on the 1971 and 1984 basins, deposit the ash at the daily stockpile, and proceed back to the ash stack area. Operators will use spotters, horn signals, and 3 part radio communications when staging off- road dump trucks in the ash excavation area and the load -out pad. If communication is unclear, employees are instructed to call an all -stop until absolute clarity can be obtained. Page 3 of 7 DUKE ENERGY Duke Energy Sutton Transportation Plan Federal DOT certified and inspected highway trucks will be loaded with CCPs by loader at the designated load out. Trucks will retract tarps at the loading zone. Haul truck will be proportionately loaded from the driver's side without pushing material in bed and allowing for the load to be fully covered by tarp. Ash will be loaded proportionally and to a level of the truck bed that the tarp will not touch the bed material. Once the trucks are loaded and loader operator signals for truck to exit loading zone, the operator will activate automatic placement of tarp to cover load. Trucks will lower their drop axles at this location before proceeding to the truck wash. Trucks will be weighed on site utilizing the existing truck scale before departing onto state roads at which time a weigh ticket will be issued to the driver. The truck load will be confirmed to be within approved limits before allowing to leave site. Upon exiting site, trucks are to follow the Primary transportation route to safely guide transportation to Brickhaven. In the event that unforeseen delays or adverse conditions make for unsafe travel, trucks will stop at approved stopping locations and will continue on route once approved (see Incident Notification Cards for communication procedures). Any trucks that have not departed from site will remain at respective site until safe travel conditions are restored. 4.0 Environmental Controls 4.1 Truck Wash A truck wash station will be utilized to ensure that all haul trucks leaving the facility are free of displaced ash material. The truck wash station includes a manual wash pad followed by an automated wheel and undercarriage wash. Operations include but are not limited to: Ash debris will be washed from trucks at the truck wash area before leaving the site. Wash waters will be captured and appropriately disposed of to prevent localized ash contamination. In the event of a malfunction with the automatic truck wash, the manual truck wash operation (high pressure washing) will be implemented. drivers will approach the wash pad location at walking speed and come to a complete stop as directed through visual or 3 way radio communication. Once the haul truck has reached a complete stop and applied the parking brake, wash attendants will utilize manual hose cleaning to wash the truck cab, sides, tailgate, wheels, mud -flaps and any other locations where material is observed. Tarp covers will be deployed and secured over the truck beds at the wash pad. Once verified by the wash station attendants as clean, tarp covers secure and turnbuckles snug, the haul truck will be directed to exit the wash pad and proceed to the automated wheel and undercarriage wash station at walking speed. Trucks will proceed through the automated wash station and exit the facility once clean Page 4 of 7 �C (' DUKE ENERGY 4.1 Dust Control Duke Energy Sutton Transportation Plan Water will be the primary method of dust suppression at the facility with application via water truck. Polymer based alternate cover material may be utilized for dust suppression if conditions dictate need. Water will be applied to gravel haul roads and work areas via water truck as needed to mitigate fugitive dust. 4.2 Spill prevention and clean-up Routine inspections occur during hours of operation to identify spills or areas of potential spills. Displaced ash will be removed within 24 hours. 5.0 Haul to Brickhaven Structural Fill Site General truck hauling Charah's subcontracted trucks will utilize NCDOT maintained highways to transport CCPs to Brickhaven. The general haul route is shown in figure 3. General truck hauling activities include but are not limited to: Truck drivers will maintain a heightened sense of awareness, be fit for duty and free of external distractions (i.e. no operating of personal electronic devices while the truck engine is running, unless an emergency situation warrants the use) and use due care and diligence in their travels between sites to ensure safety of all parties. Trucks will follow the route on Figure 3. Truck drivers will adhere to all traffic laws and regulations throughout travels. In the event of detours along provided routes drivers must return to appropriate route as soon as possible. Drivers are to alert Dispatch immediately if a detour is encountered. The NCDOT website does not show any planned construction along the approved route between Sutton and Brickhaven. In the event of an accident or incident resulting in displaced ash once off Duke Energy property, Charah is responsible for cleanup, and has emergency responders on call. If a spill occurs, truck driver will notify Charah dispatch. Charah dispatch will alert HAZMAT crews for assessment and removal of material. Charah will make all required regulatory notifications. Charah dispatch will notify Duke Energy in the event of a release. If an emergency or spill occurs, notifications will be made according to the Charah emergency response plan which is summarized in the call tree included as Figure 4. Charah is responsible for removal of any ash displaced from trucks during transport. Page 5 of 7 DUKE �. ENERGY., ,Gr,ec�nsbora� BurlE0ngtQn Mh�'oin a + - 1Flaleat�h Brickhaven AA(?ncure-Flatwood d 43' 1m Jwhartle I i I2 h 18 ri41 ti MO le5 Sautl,ern Pyres Faye ttevi llev t_:11"tor, 0 Rockingham 52 DOM d1, 1S svrile ,,,� j i 0r'wrHr+git�n Florence ` 4' Flr�atxlhkc,wn v WhIlewil lF 0 Duke Energy Sutton Transportation Plan Hocky MOU111 4 i` XAW 64 Gr nville 1MFfMennllE 1Mashrr+g�ttxn' Gold b4ro, l3 FKinston ID "M I -- �ra�arart National Forest Jacksooville M01 Q Emerald tsk 801 Su"on Stealer Plant Rel 0 Wilmington ,Frena Beacfi `purl 1;14y n �1rtr, F+"yrile a+,tthpan sta sway rie��r'h [Uk IslandFieure 3-Truckine Haul Route from Sutton to Brickhaven Page 6 of 7 DUKE �. ENERGY.: Duke Energy Site Enuirenment it Coordinator Duke Energy Waste Subject Matter Expert Figure 4 — Sutton Ash SDiII Resaonse Tree Duke Energy— Sutton Steam Station Ash Basin Strategic Action Team - Ash SniII ResnonseTree Duke Energy Property Charah Site Superintendent Duke Energy Site project Manager North Carolina Duke Energy Site DEQ Solid Waste Safety Officer (919) 707-8200 Duke Energy Sutton Transportation Plan Outside Duke Energy Property Charah Trucking Superintendent Charah Dispatch Duke Energy Site Safety Officer Cha ra h Erni ron menta Response Coordinator Duke Energy Site Project Manager North Caroiina DEQSolid Waste 707-8200 (919) Duke Energy Waste Subject Matter Expert State, Federal, Loca4 regulators as a p p rop riate NorthCaroiina Environmental Emergency Response I -SW -858-0368 Alnorouriate NC County Emergency Resaonse New Hanover Caunty9ll; (91o)452-6120 Render County911;(910) 259-1210 Du p I i n Cou my 911; (910) 296-2160 Sampson County 911; (910) 592-8996 Johnston County 911; (919)989-5050 Wake County 911; (919) 8.56-6480 Chatham County 911; (919) 542-2911 Page 7 of 7 ATTACHMENT G CHIMNEY DRAIN CALCULATIONS COMPUTATION COVER SHEET Duke Energy Client: Progress, LLC Project: Sutton Landfill and Pond Closure Geosyntec consultants Project No.: GC5770 Phase No.: 02 Title of Computations LEACHATE COLLECTION SYSTEM CHIMNEY DRAIN FLOW CAPACITY Computations by: Signature 1 December 2015 Printed Name osh Colley, EI Date Title Senior Staff 26gineer Assumptions and Signature Procedures Checked 1 December 2015 by: Printed Name for Damasceno, Ph.D ; .E. Date (peer reviewer) Title Senior Engineer Computations Checked Signature by I December 2015 Printed Name ctor Damasceno, Ph. , P.E. Date Title enior Engineer Computations Signature Backchecked by: I December 2015 (originator) Printed Name osh Colley, EI Date Title Senior Staff E16gineer Approved by: Signature (pm or designate) 1 December 2015 Printed Name ictor Damasceno, Ph. ., P.E. Date Title Senior Engineer Approval notes: Revisions (number and initial all revisions) No. Sheet Date By Checked by Approval GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 1 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 LEACHATE COLLECTION SYSTEM CHIMNEY DRAIN FLOW CAPACITY L.V. SUTTON ENERGY COMPLEX, CCR LANDFILL DISPOSAL FACILITY, WILMINGTON, NEW HANOVER COUNTY, NORTH CAROLINA INTRODUCTION A leachate collection system (LCS) has been proposed for the proposed onsite Coal Combustion Residuals (CCR) landfill disposal facility (landfill) located at the L.V. Sutton Energy Complex (Sutton) in Wilmington, New Hanover County, North Carolina. A calculation package titled "Leachate Collection System Analysis" presented the engineering design and performance evaluation for the proposed leachate collection system and was submitted to the North Carolina Department of Environmental Quality (NCDEQ) on 7 August 2015 as part of an application for a permit to construct (application). The proposed leachate collection system consists of a geocomposite drainage layer (on top of a geomembrane) designed to collect leachate that percolates vertically through the CCR and convey it to a sump for removal from the cell. For each cell, the leachate collection system includes (i) a geocomposite drainage layer, (ii) leachate collection pipes, and (iii) a leachate collection sump. Each sump will have a sump pump to remove the leachate and transfer it via a leachate transmission line to an on-site leachate storage area. The adequacy of the leachate management system proposed for the landfill was evaluated based on the leachate generation rates and heads on the liner estimated by the analyses presented in the previously mentioned calculation package. Each cell is also proposed to have a chimney drain. The purpose of this calculation package is to present calculations demonstrating the proposed leachate collection system pipes provide adequate flow capacity when considering runoff collected by the proposed chimney drains. 2 SYSTEM CONFIGURATION The grading for the leachate collection system proposed for the landfill is indicated on Sheet 8 of the permit drawings included as part of the application. The landfill facility will consist of 11 cells (Cells 1 through 11) that will be constructed in three phases (Phases 1 through 3). The floor of the Cells are graded in a "herringbone" pattern with a leachate collection pipe (perforated HDPE collection pipe surrounded by high -permeability gravel wrapped in a geotextile) installed in the valley of the "herringbone" floor grades along the center of each cell. The floor of the proposed cells has an initial slope of approximately 2.1 percent towards the leachate collection pipe (i.e. perpendicular to the leachate collection corridor), and the leachate collection pipe slopes from the back of the cell to the approximate mid -point of the corridor at 0.3 percent, the slope breaks and the leachate collection pipe slopes from the approximate mid- point towards the sump at 1 percent (see Sheet 8 of the permit drawings). This configuration GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 2 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 allows post -settlement slopes to be greater than or equal to 2 percent on the cell floor and 0.3 percent along the leachate collection corridor. The "herringbone" slope configuration is designed to sustain a maximum drainage path (i.e., maximum distance leachate travels to reach the collection pipe) of 390 ft. The maximum height of CCR is approximately 90 ft and corresponds to a maximum elevation of approximately 112 ft North American Vertical Datum of 1988 (NAVD88) with final cover. The design side and top slopes are 33 percent (3 horizontal to 1 vertical, 3H:1V) and 5 percent (20H:1 V), respectively. The subgrade elevations for Cells 1 through 11 range from approximately 18 ft NAVD88 in the sump area to 28 ft NAVD88 towards the back of each cell. An average bottom of CCR elevation of 25 ft NAVD88 was assumed accounting for 2 feet of protective soil cover on top of the bottom liner system. The proposed chimney drains will be positioned above the leachate collection corridor, at the approximate center of each cell and the chimney drain base will sit on the protective soil cover. Runoff that is collected by the chimney drain is anticipated to flow from the base of the drain, through the protective soil cover and enter the leachate collection corridor pipe. 3 DESCRIPTION OF RELEVANT SYSTEMS AND OPERATIONS 3.1 Bottom Liner System The components of the bottom liner system that will be installed include (from top to bottom): 24 -inch thick protective soil layer; geocomposite lateral drainage layer (high density polyethylene (HDPE) geonet with non- woven geotextile heat -bonded on both sides); 60 -mil HDPE textured geomembrane; geocomposite lateral drainage layer (HDPE geonet with non -woven geotextile heat - bonded on both sides); 60 -mil HDPE textured geomembrane; geosynthetic clay liner (GCL); and 12 -inch compacted soil layer. Properties of the protective soil layer, manufacturing and installation defects for the geomembrane liner, and transmissivity data for the geocomposite used in the analyses are discussed in the "Leachate Collection System Analysis" calculation package. The hydraulic conductivity of the protective soil layer shall be a minimum of 1 X 10-4 centimeters per second (cm/s). GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 3 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 3.2 Leachate Collection Pipe and Sump As shown on Sheet 8 of the permit drawings submitted as part of the application, the leachate collection piping is located in the valley of the "herringbone" pattern base grade, typically along the centerline of each cell. The leachate collection pipe consists of a minimum of 6 -inch diameter SDR 11 perforated HDPE pipe surrounded by drainage gravel wrapped in a non -woven geotextile filter fabric. The initial slopes of the leachate collection corridors within each landfill cell are 0.3 and 1 percent for the upper and lower part of the leachate collection corridor, respectively (Sheet 8 of the permit drawings). The upper slope of the leachate collection corridor is likely to increase due to differential settlement. The lower slope of the leachate collection corridor is expected to decrease due to differential settlement; however, post settlement grades are expected to be equal to or greater than 0.3 percent throughout the length of the collection corridor. Therefore the slope of the leachate collection corridor was conservatively assumed to be 0.3 percent to establish the required leachate collection pipe flow capacity. 4 HELP MODEL ANALYSES 4.1 Purpose The Hydrogeologic Evaluation of Landfill Performance (HELP) model, Version 3.07 [Schroeder, et. al., EPA/600/R-94/168a and EPA/600/R-94/168b, 1994] was used to estimate leachate generation rates, and leakage through geomembranes for the proposed leachate collection system for the landfill cells. The HELP model is a quasi -two dimensional water balance computer program used to evaluate the movement of water through the waste and components of the liner system. The computer program, along with site-specific weather data and design information, was utilized to estimate runoff, evapotranspiration, drainage, leachate collection, and liner leakage for the initial startup, intermediate development, and the final configurations. The estimated leachate generation rates and other information obtained from the HELP model were used to estimate the leachate and runoff generation rates. The leachate generation rates were also used to design the leachate transmission system and leachate storage system for the landfill (refer to the calculation packages titled "Leachate Generation Life Cycle Analysis" and "Leachate Pump and Transmission System Design," included as part of the application). 4.2 Landfill Development Conditions Analyzed The CCR configuration analyzed to estimate the leachate and runoff generation rates assumed a unit area of 1 acre. The leachate generation rate and runoff were conservatively evaluated assuming the initial conditions of operation with a top slope of 5 percent to be collected by the chimney drain. The selected configuration represents a conservative case that maximizes runoff GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 4 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 to be collected by the chimney drains (i.e. the CCR height is such that final side slopes will not have been graded yet). This configuration is considered to be conservative since it results in a higher total liquid generation rates, thus requiring a higher pipe flow capacity. The leachate and runoff generation rates were estimated for the case described below: Initial conditions of operation in a cell after the placement of a start-up lift and additional lifts of CCR for a total of 10 ft of waste. Ninety percent of the available surface was assumed to be available for runoff from the daily cover surface, and surface vegetation was not considered for this case. The runoff is assumed to be collected through the chimney drain and conveyed to the top of the LCS. 4.3 Input Data for HELP Model The HELP model requires weather, soil, and basic design data as input and uses solution techniques that account for above -surface and subsurface hydraulic processes including precipitation, runoff, and evapotranspiration. The simulation period used in the HELP model analysis for the landfill was 30 years. 4.3.1 Weather Data Description The HELP model allows user defined weather data as well as default and synthetically generated precipitation, temperature, solar radiation, and evapotranspiration data for specific cities in the United States. The temperature, wind and humidity (i.e. evapotranspiration data), and precipitation data used in the HELP model were obtained from the North Carolina Climate Retrieval and Observations Network of the Southeast Database (NC CRONOS) website [State Climate Office of North Carolina, 2015], based on true observations made from April 2011 to April 2015 at the Wilmington International Airport weather station (Station ID 319457). The weather station is located approximately 5 miles southeast of the proposed landfill location. Solar radiation data were synthetically generated using Charleston, South Carolina as the nearby city. 4.3.2 Soil and Design Data The following subsections describe the parameters considered for the soil and design data in the cases analyzed for landfill. Attachment 1 presents a summary of the input parameters used in the HELP model analyses. 4.3.2.1 Model Plan Area Areas were assumed equal to 1 acre (43,560 ft2) in the HELP analyses. 4.3.2.2 Runoff GC5770/1,eachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 5 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 This input parameter specifies the percentage of area that will allow drainage from the surface. As described in Section 4.2, the runoff was assumed to be 90 percent. 4.3.2.3 Initial Moisture Content Default values for initial moisture content were calculated by the HELP model for approximately steady-state conditions and used for all soil layers. 4.3.2.4 Layer Data Layer data was defined based on Geosyntec's experience, knowledge with local soils and site conditions, and HELP model recommendations. The HELP model provides default parameters based on the USCS (Unified Soil Classification System) soil classification or the United States Department of Agriculture (USDA) textural classification system. The HELP model recognizes four general types of layers: 1. vertical percolation layer; 2. lateral drainage layer designed to convey drainage laterally to a collection and removal system; 3. a soil barrier layer designed to restrict vertical leakage or percolation through which a saturated vertical flow is allowed; and 4. geomembrane liners. 4.3.2.5 Geomembrane Liner Pinhole density corresponds to the number of assumed defects in a given area with a hole diameter equal to or smaller than the geomembrane thickness. A conservative hole diameter of 1 mm was used in the HELP model analyses. Two pinholes per acre were assumed in the analyses, which is a typical assumption design purposes. Installation defects correspond to the assumed number of defects in a given area with a hole diameter larger than the geomembrane thickness. A hole size of 1 cm2 was used in the HELP model analyses. Installation defects are the result of seaming faults and punctures during installation. Two defects per acre were assumed in the analyses, which is a typical assumption for a project with a good construction quality assurance program. 4.3.2.6 Liner System and Final Cover Drainage Path Lengths The HELP model analysis was performed using the critical design length (drainage path); for the landfill cell floor grades presented in the permit drawings, the longest drainage path is approximately 390 ft. 4.3.2.7 Surface Soil Texture GC5770/1,eachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 6 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 The surface soil texture for CCR was used since this is top exposed layer and no vegetative cover was assumed. 4.3.2.8 Surface Vegetation The surface vegetation was assigned a surface vegetation number equal to 1, corresponding to bare ground. 5 HELP MODEL ANALYSES AND RESULTS HELP model analysis was performed to estimate the peak monthly liquid impingement rate (i.e. leachate generation rate) and runoff generation rate. These values are provided as part of the HELP output file provided in Attachment 2. 6 LEACHATE COLLECTION SYSTEM PIPE DESIGN 6.1 Pipe Flow Capacity The flow capacity through a pipe is calculated using Manning's equation, as follows: 1.486R 0.661 0.5A QP n where: Q1, = pipe flow capacity, ft3/sec; Rh = Bi/4, hydraulic radius where B;= pipe inner diameter, ft; ip = hydraulic gradient (i.e., slope of the pipe); AP = cross-sectional area of the pipe, ft2; and n = Manning's roughness coefficient (0.011 for smooth HDPE). Equation 1 For a circular pipe flowing full, Manning's equation assumes steady uniform turbulent conditions. The leachate collection pipes proposed for the leachate collection corridor within the cells are a minimum 6 -inch diameter perforated HDPE, with a standard dimension ratio (SDR) of 11. The estimated flow conveyed through the leachate collection corridor pipe was calculated to be approximately 122 gpm. The total flow capacity through the system is approximately two and a half times greater than the design flow. The leachate collection system calculations are presented as part of Attachment 3. GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 7 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 6.2 Peak Leachate Flow The peak monthly average runoff and leachate generation rates are 6.07 and 0.0841 inches per acre, respectively. Assuming a 30 day month and an approximately 10.6 acre cell, the total liquid flow rate was calculated to be approximately 46 gallons per minute (gpm). 6.3 Leachate Collection Corridor and Chimney Drain Pipes The flow capacities for a minimum 6 -inch diameter HDPE pipe (SDR 11) were calculated for various slopes using the following input data: Parameter Assumed/Calculated value B; 5.348 in Rh 1.34 in Ap 22.46 int n 0.011 (Note: Calculations presented as part of Attachment 3) For varying pipe slopes the following flow capacities were calculated: Pipe Slope Flow % (gpm) 1.25 248 1.00 222 0.75 192 0.3 122 (Note: Calculations presented as part of Attachment 3) The upper and lower portions of the leachate collection pipe have initial slopes of 0.3 and 1.0 percent, respectively. Post -settlement, the upper slope is expected to increase whilst the lower slope decreases. However, as presented above, the flow capacity of the pipe at an assumed minimum slope of 0.3 percent is approximately two and a half times larger than the maximum expected flow in a cell (i.e., 46 gpm). Therefore, the flow capacity of the vertical chimney drain pipes is also expected to exceed the expected flow in a cell since the pipe slope is steeper (i.e. vertical) than that of the leachate collection corridor pipes. 6.4 Pipe Perforation Sizing The maximum allowable perforation diameter in the leachate collection pipes and leachate sump pipes that will prevent gravel from passing through may be determined as follows [US EPA, 1983]: GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 8 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 dhmax F Equation 2 where: dhm,,= maximum perforation diameter to provide particle retention (inches); d85 = particle size of the pipe bedding material for which 85 percent by weight of the particles are finer (inches); and F = reduction factor varying from 1.2 to 2.0. The design calculations assume the use of No. 57 stone for the leachate collection pipes and No. 4 stone for the leachate sump pipes. The pipe perforation sizing proposed is 1/2 inch for the leachate collection pipes and 5/8 inch for the leachate sump pipes. Assuming a reduction factor (F) of 1.6 (i.e., average reduction factor for published range) and using the particle size of the pipe bedding material for 85 percent of finer particles (ASTM D 448) results in the following: Pipes in cells Pipes in sumps Stone No. 57 Stone No. 4 F= 1.6 F= 1.6 d85 = 3/4 in d85 = 1 in dhmax = 1/2 in dhm = 5/8 in (Note: Calculations presented as part of Attachment 3) 6.5 Pipe Perforation Evaluation The maximum flow through the perforations is determined as follows: Q A.v.L where: A = total perforated are per foot, given by: A 4 a .p , where: d = minimum perforation size; and p = number of perforations per foot; v = flow velocity, given by: GC5770/1,eachateCollectionSystem ChimneyDrain.docx Equation 3 Geosyntec consultants Page 9 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damaseeno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 V 2.g.h , where: g = acceleration due to gravity; and h = head acting on the crown of the pipe; and L = total length of pipe. The flow capacity through the pipe perforations was calculated using the following input data: Parameter Assumed/Calculated value d 0.5 in P 4 h 6 in L 160 ft (Note: Calculations presented as part of Attachment 3) The estimated flow capacity of the perforations of the leachate collection corridor pipe was calculated to be approximately 1953 gpm. It should be noted that the total flow capacity of the perforations is approximately forty times greater than the design flow. The leachate collection gallery system calculations are presented as part of Attachment 3. 7 SUMMARY AND CONCLUSIONS The calculations presented herein demonstrate that the proposed leachate collection system pipe provides adequate flow capacity when considering runoff collected by the proposed chimney drains. Specifically, the proposed LCS pipe (6 -in diameter SDR 11 HDPE) and LCS corridor configuration (i.e., 0.3 percent slope) provides a flow capacity of approximately 122 gpm, equivalent to a factor of safety for flow equal to approximately 2.6 for infiltration through CCR and runoff collected via chimney drains (i.e., 46 gpm). GC5770/LeachateCollectionSystem ChimneyDrain.docx Geosyntec consultants Page 10 of 10 Written by: J. Colley Date: 01/12/15 Reviewed by: V. Damasceno Date: 01/12/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 8 REFERENCES Schroeder, P. R., Aziz, N. M., Lloyd, C. M. and Zappi, P. A (1994). "The Hydrologic Evaluation of Landfill Performance (HELP) Model: User's Guide for Version 3", EPA/600/R-94/168a, September 1994, U.S. Environmental Protection Agency Office of Research and Development, Washington, DC. Schroeder, P.R., Dozier, T.S., Zappi, P.A., McEnroe, B.M., Sjostrom, J.W., and Peyton, R. L. (1994) "The Hydrologic Evaluation of Landfill Performance (HELP) Model: Engineering Documentation for Version 3", EPA/600/R-94/168b, September 1994, U.S. Environmental Protection Agency Office of Research and Development, Washington, DC. State Climate Office of North Carolina, NC State University (2015), CRONOS Internet Database available at http://www.nc-climate.ncsu.edu/cronos/, accessed 9 April 2015. US EPA (1983), "Lining of Waste Impoundment and Disposal Facilities." U.S. Environmental Protection Agency, Cincinnati, Ohio. GC5770/LeachateCollectionSystem ChimneyDrain.docx ATTACHMENT HELP Model Input Parameters Precipitation Data Value Nearby city Wilmington State North Carolina Years for data generation 30 Temperature Data Value Nearby city Wilmington State North Carolina Years for data generation 30 Normal mean monthly tem erature °F January 48 July 80.6 February Solar Radiation Data Value Nearby city Charleston State 49.1 August 77.9 March 54.3 September 73.7 April 63.7 October 65 May 71.8 November 52 June 76.8 December 51.5 Solar Radiation Data Value Nearby city Charleston State South Carolina Years for data generation 30 WEATHER DATA AND SOIL LAYERS PROPERTIES Evapotranspiration data Data Value Units Nearby city Wilmington Slope Length (ft) State North Carolina 30 Latitude 34.3 Curve Number Evaporative zone depth In OLTIS bare 10 Gmodel fair 22 ksat excellent 40 Maximum leaf area index Field cap. (vol/vol)(vol/vol) bare ground 0 poor stand of grass 1 (in) fair stand of grass 2 good stand of grass 3.5 slope excellent stand of grass 5 Vertical percolation Growing season start day 0 0.541 Growing season end day 367 5.000E-05 Average wind speed 2.4 mph First quarter relative humidity 68.6 % Second quarter relative humidity 71.7 % Third quarter relative humidity 78.8 % Fourth quarter relative humidity 74.6 % Runoff Curve Number Value Data Value Slope 5% Slope Length (ft) 1000 Soil Texture 30 Vegetation 1 Curve Number 96.7 Geomembrane and Area Data Value Placement of geomembrane good (3) Pinhole (# of defects/area) 2 Defect density per acre 2 Area assumed in program (acre) 1 Final Transmissivity and Conductivity Data Value E)req'd 4.49E-04 mZ/s TT(RF) 2.475 tgeocomposite 0.300 In OLTIS 1.82E-04 m2/s Gmodel 9.08E-05 mZ/s ksat 1.191 cm/s rroperlles OT sou layers Thickness Texture Porosity Wilting point Liner Layer Type Description Field cap. (vol/vol)(vol/vol) k (cm/s) Drain Length (ft) (in) number (vol/vol) slope 1 1 Vertical percolation 120 30 0.541 0.187 0.047 5.000E-05 2 1 Vertical percolation 24 0 0.457 0.083 0.033 1.000E-04 3 2 Lateral Drainage 0.30 0 0.850 0.010 0.005 1.191 E+00 390 2.12% 4 4 Geomembrane Liner 0.06 35 0.000 0.000 0.000 0.000E+00 5 2 Lateral Drainage 0.20 0 0.850 0.010 0.005 1.191 E+00 390 2.12% 6 4 Geomembrane Liner 0.06 35 0.000 0.000 0.000 0.000E+00 7 3 Soil barrier 0.25 17 0.750 0.747 0.400 3.000E-09 8 1 Vertical percolation 12 22 0.419 0.307 0.180 1.900E-05 ATTACHMENT 2 HELP Output Files rtrtkrtkrt*rtrtkrtkkkrtk:krtkrtkkrtk rt:kkkkrt:kk:kkrtkkkk:kkki:kkkrtiskkrtrt':kkkkiskkrtkk's irk?: ?: ?:kkkkkkkkk rtrtrtrtrtrtrtrtrtkrtrtrtkrtrtrtrtkrtrtrtrtrtrtrtrt:kkrtrtrtrtrtrtrtrtrtrtrtrtrtkrtrtrtrtrtrtrtrtkrtrtrtrtkrtrtkrtkrtkrtkkrtkrtkrtkkrtkrtk kk kk kk kk ** HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE ** ** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ** - DEVELOPED BY ENVIRONMENTAL LABORATORY ** ** USAE WATERWAYS EXPERIMENT STATION ** *" FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ** kk kk kk kk rtkkkkkkrtkkkkrtkkkkrtkkkkkkkkkkkkrtkkkkkrt*irk irrt kkkkkkkkkrtkkkkrtkkkkkkkkkkkkkkkkkkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\Chimney\PREC.D4 TEMPERATURE DATA FILE: c:\help\prl\lvsutton\chimney\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prl\lvsutton\chimney\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prl\lvsutton\chimney\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\prl\lvsutton\Chimney\90ROAS-1.D10 OUTPUT DATA FILE: c:\help\pr]\lvsutton\Chimney\90RO.OUT TIME: 10:33 DATE: 11/19/2015 TITLE: L.V. Sutton Greenfield Landfill *kkk:tk*kk*k?rkkkk?rkkkkkkkkkk?rk*kk*k?tk**kkk*k*kk**?rk:k**?rk:k**?rk kk*k?rk irk*k*k***eYrt* NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 120.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2257 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0864 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.12 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.12 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2661 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. PRECIPITATION DATA WAS SCS RUNOFF CURVE NUMBER = 96.70 USING FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.612 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 32.546 INCHES TOTAL INITIAL WATER = 32.546 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 % AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 % AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 % AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 % NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA MAR/SEP NORMAL MEAN MONTHLY PRECIPITATION (INCHES) ------- 54.30 JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING 1 THROUGH COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 -------------- 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY ------------------------------------------------------------------------------- VALUES IN INCHES FOR YEARS 1 THROUGH 30 JAN/JUL ------- FEB/AUG ------- MAR/SEP APR/OCT ------- MAY/NOV ------- JUN/DEC ------- PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.349 1.203 1.660 1.766 1.298 1.972 2.700 6.070 1.556 1.009 1.796 1.394 STD. DEVIATIONS 0.496 0.866 1.130 1.460 1.207 1.550 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD 1.910 3.244 1.369 1.251 1.423 1.102 EVAPOTRANSPIRATION 0.0060 0.0057 0.0067 0.0055 0.0057 0.0066 0.0074 0.0069 ------------------ TOTALS 1.562 1.761 2.796 2.680 2.216 2.711 0.0088 0.0081 3.460 3.846 2.783 1.678 1.291 1.307 STD. DEVIATIONS 0.160 0.214 0.395 0.972 0.954 1.019 1.202 0.995 0.736 0.693 0.390 0.146 LATERAL DRAINAGE COLLECTED FROM LAYER 3 0.0066 0.0068 0.0086 0.0089 0.0093 0.0093 rtrtrtrtrtrtrtrt�rtrtrtrt*rtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrt*rttrrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrttrrtrtrt*rtrtrtrtrtrtrtrtrtrttrrtrtrtrttrrt 0.0094 0.0080 0.0065 ---------------------------------------- TOTALS 0.0629 0.0598 0.0642 0.0663 0.0654 0.0734 PRECIPITATION 0.0630 0.0650 0.0723 0.0841 0.0763 0.0652 STD. DEVIATIONS 0.0507 0.0419 0.0466 0.0512 0.0624 0.1108 LATERAL DRAINAGE COLLECTED 0.81800 ( 0.0999 0.0923 0.0835 0.0859 0.0600 0.0465 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.1442 0.1365 0.1459 0.1474 0.1443 0.1480 0.1298 0.1289 0.1382 0.1582 0.1565 0.1484 STD. DEVIATIONS 0.0740 0.0623 0.0754 0.0745 0.0774 0.0951 0.1014 0.1063 0.1031 0.1059 0.0865 0.0728 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.1436 0.1358 0.1465 0.1478 0.1432 0.1490 0.1310 0.1288 0.1367 0.1568 0.1572 0.1491 STD. DEVIATIONS 0.0730 0.0633 0.0758 0.0729 0.0776 0.0945 0.1012 0.1058 0.1025 0.1065 0.0878 0.0744 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0022 0.0015 0.0017 0.0021 0.0021 0.0016 0.0015 0.0017 0.0017 0.0016 0.0015 0.0016 STD. DEVIATIONS 0.0035 0.0020 0.0019 0.0035 0.0033 0.0018 0.0017 0.0021 0.0026 0.0025 0.0022 0.0022 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------- AVERAGES 0.0055 0.0058 0.0056 0.0060 0.0057 0.0067 0.0055 0.0057 0.0066 0.0074 0.0069 0.0057 STD. DEVIATIONS 0.0045 0.0041 0.0041 0.0046 0.0055 0.0101 0.0088 0.0081 0.0076 0.0076 0.0055 0.0041 DAILY AVERAGE HEAD ON TOP OF LAYER 6 ------------------------------------- AVERAGES 0.0126 0.0131 0.0129 0.0134 0.0126 0.0135 0.0115 0.0113 0.0124 0.0138 0.0143 0.0131 STD. DEVIATIONS 0.0064 0.0061 0.0067 0.0066 0.0068 0.0086 0.0089 0.0093 0.0093 rtrtrtrtrtrtrtrt�rtrtrtrt*rtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrt*rttrrtrtrtrtrtrtrtrtrtrtrtrtrtrtrtrttrrtrtrt*rtrtrtrtrtrtrtrtrtrttrrtrtrtrttrrt 0.0094 0.0080 0.0065 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- --------- 194554.7 100.00 RUNOFF 22.772 ( 5.8563) 82660.59 42.487 EVAPOTRANSPIRATION 28.091 ( 2.6696) 101969.02 52.411 LATERAL DRAINAGE COLLECTED 0.81800 ( 0.62436) 2969.356 1.52623 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 1.72612 ( 0.76683) 6265.818 3.22059 LAYER 4 AVERAGE HEAD ON TOP 0.006 ( 0.005) OF LAYER 4 LATERAL DRAINAGE COLLECTED 1.72563 ( 0.76598) 6264.040 3.21968 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.012 0.00001 LAYER 7 AVERAGE HEAD ON TOP 0.013 ( 0.006) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02088 ( 0.02559) 75.798 0.03896 LAYER 8 CHANGE IN WATER STORAGE 0.170 ( 2.0849) 615.91 0.317 kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkrtkkkkkkkkkrtkkkkkkkkkkkkkkkkkkkkkkkkrtkkrtkkkk kkkrtkrtkkrtkrtkkkrtrtkkk'.:krtkk'.:krtkrtrtk'.:k kkrtkrtkrtkrt'.:kkrtkkkkkir'.:kkkkkkkkkkkrtkkkkrtkkkkrtkrtk PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) ---------- ------------- PRECIPITATION 5.25 19057.500 RUNOFF 4.314 15658.4082 DRAINAGE COLLECTED FROM LAYER 3 0.02045 74.24708 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.017141 62.22053 AVERAGE HEAD ON TOP OF LAYER 4 0.056 MAXIMUM HEAD ON TOP OF LAYER 4 0.111 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 1.9 FEET OF YEAR 30 DRAINAGE COLLECTED FROM LAYER 5 0.01710 62.07855 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00006 AVERAGE HEAD ON TOP OF LAYER 6 0.047 0.0340 MAXIMUM HEAD ON TOP OF LAYER 6 0.093 5 LOCATION OF MAXIMUM HEAD IN LAYER 5 0.0000 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000700 2.54064 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) MINIMUM VEG. SOIL WATER (VOL/VOL) 0.4047 0.0470 Maximum heads are computed using MCEnroe's equations. kkk Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. krtkirk rtkrtkkrtkrtkkrtkrtkrtkkirk rtkrtirk rtkrtkkkrtkkkkkkrtkkkkkrtkkkkrtrtirk kkrtkirk krtkkrtkrtkkkkkkkk krtkrtkrtkrtrtkrtkkkkrtkrtkkkrtrtkrtkrtkkrtkkkkkrtkkkkrtkkirk irk rtkkkkkkkkkkrtkkrtrtkrtrtkrtkrtrtirk kkkkk FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- 1 -------- 29.4545 --------- 0.2455 2 5.3999 0.2250 3 0.0102 0.0340 4 0.0000 0.0000 5 0.0166 0.0830 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5671 0.2139 SNOW WATER 0.000 ATTACHMENT 3 Leachate Collection System Calculations Josh Colley Geosyntec Consultants Charlotte, NC Leachate Collection System Pipe Flow Capacity Check Assumed Pipe Geometry Diameter d := 6in Perforated HDPE Standard Dimension Ratio (SDR) = 11 Leachate and Runoff Volumes (from HELP) Assuming 90% of total area available for runoff Peak Monthly Average Runoff: Runoff: 6.07 inches per month Runoff := 0.2023 in day November 2015 Peak Monthly Average Liquid Impingment Rate: 0.0841 inches per month Leachate Generation: Leachate Generation Per Day: in Leachgeri:= 0.02803 — day Cell Size: A := 10.663acre = 4.645x 105•ft2 (Estimated largest cell area) Maximum Flow Rate: QL := (Leachgeri•A) + (Runoff •A) = 46•gpm Pipe Flow Capacity Inner pipe diameter: Hydraulic radius Hydraulic gradient: Bi := 5.348in Bi Rh := 4 Rh = 1.337 -in ip 0.3% Cross-sectional pipe area Manning's roughness coefficient: A := Tr• Bi2 2 4 A = 22.463 • in n := 0.011 for HDPE 0.66 _ CRh� 0.5 AP 1.486• ft ) 'p • ft ft QCM' n s Qc(ip) = 121.721•gpm x := 0,0.0001..2 Qc(0.3%) = 122•gpm 1 of 3 Josh Colley Geosyntec Consultants Charlotte, NC 200 bA O a> 100 0 0.4 0.6 0.8 Pipe Slope (%) Pipe Perforation Sizing F := 1.2,1.21..2 Pipes in Cells - Stone No. 57 Particle size of the pipe bedding material for 85% finer by weight: Pipes in Sumps - Stone No. 4 Particle size of the pipe bedding material for 85% finer by weight: _ d85 dh_max(F,d85) F E Q PC November 2015 3. d85 -cell 4n d85_sump lin �.y Pipe in Cell ----- Pipe in Sump - ).7 - ).5 - ).4 - 1.2 F := 1.6 1.4 1.6 1.8 F d85 cell d85_sump dcell F dcell = 0.5- in dsump F dsump = 0.625•in 2 of 3 Josh Colley Geosyntec Consultants Charlotte, NC Pipe Perforation Evaluation November 2015 The total peak -daily liquid (i.e. leachate and runoff) generation rate is equal to approximately 46 gpm (for a 10.6 acre area - Cell 11 - largest cell, providing higher liquid generation) calculated from the HELP simulation. The total length of the shortest leachate collection pipe (i.e., Cell 1 - shortest length yields lowest conveyance capabilities) is equal to approximately 160 ft for the upper slope of the leachate collection corridor. The following calculations are used to determine the maximum flow through the perforations, into the pipe. perforation size: 4:= min ( dcell, dsump ) = 0.5 -in perforations per foot: p := 4 (function of spacing) 2 total perforated area per foot: A:= Tcd -p 4 A = 0.69•in2 PLAN maximum head on pipe: h := 6in (based on maximum head allowed on bottom liner= 12in i.e. 6in of head acting on crown of the HDPE pipe) � flow velocity: v :=2. h �120o SECTION total length of pipe: L_:= 160 ft flow through perforations of pipe: QP := A•v•L Q = 1953•gpm 1/2"0 HOLES 6"0 SDR 11 HDPE LEACHATE COLLECTION PIPE (TWO ROWS OF PERFORATIONS) The sump pipe perforation is greaterthan the perforation ofthe pipes in the cells and is therefore expected to provide adequate leachate flow. Conclusion Calculated flow rate of liquid (i.e. leachate and runoff) is: QL = 46.gpm Calculated flow capacity of the proposed pipe is: Qc(0.3%) = 122.gpm The flow capacity of the pipe is greater than the calculated flow rate of liquid. Therefore the pipe is able to adequately convey the anticipated flow rate of liquid. Calculated flow through pipe perforations is: QP = 1953.gpm The calculations show that the proposed spacing, orientation and perforation size allows a flow rate that exceeds the anticipated flow rate of liquid. Therefore providing adequate leachate flow into the leachate collection system. 3 of 3 ATTACHMENT H LEACHATE LIFE CYCLE GENERATION Geosynteccl consultants COMPUTATION COVER SHEET Duke Energy Client: Progress, LLC Project: Sutton Landfill and Pond Closure Project No.: GC5770 Phase No.: 02 Title of Computations LEACHATE GENERATION LIFE CYCLE ANALYSIS Computations by: Signature 1 July 2015 Printed Name K actor Damasreno, Ph. ., P.E. Date Title Senior Engineer Assumptions and Signature Procedures Checked 1 July 2015 by: Printed N Josh Colley, Date (peer reviewer) Title Senior Staff Engineer Computations Checked Signature by: 1 July 2015 Printed Josh Colley, E Date Title Senior Engineer Computations Signature Backchecked by: 7 August 2015 (originator) Printed Nam 7ictor Damasceno, P , P.E. Date Title Senior Engineer Approved by: Signature (pm or designate) 7 August 2015 Printed Nam ictor Dama eno, P -1P E. Date Title Senior Engineer Approval notes: Revisions (number and initial all revisions) No. Sheet Date By Checked by Approval GC5770/LeachateLifeCyc1e.docx Geosyniec'° consultants Page 1 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 LEACHATE GENERATION LIFE CYCLE ANALYSIS L.V. SUTTON ENERGY COMPLEX, CCR LANDFILL DISPOSAL FACILITY, WILMINGTON, NEW HANOVER COUNTY, NORTH CAROLINA 1 INTRODUCTION The purpose of this calculation package is to quantify the leachate generation over the operational period of the proposed onsite Coal Combustion Residuals (CCR) landfill disposal facility (landfill) located at the L.V. Sutton Energy Complex (Sutton) in Wilmington, New Hanover County, North Carolina. The calculated leachate generation will be used to design the leachate storage containers at the site. This calculation package is being submitted as part of an application for a permit to construct (application). 2 SYSTEM OVERVIEW The proposed Sutton landfill will consist of 11 cells (Cells 1 through 11) that will be constructed in 3 phases (Phases 1 through 3), with a landfill footprint of approximately 100 acres. For the purpose of this calculation package, the maximum thickness of waste (coal combustion residuals — CCR) to be placed at the landfill is approximately 90 ft and corresponds to a maximum elevation of approximately 112 ft, North American Vertical Datum of 1988 (NAVD88). The design side slopes and top slopes of the landfill are 33 percent (3H:1 V) and 5 percent (20H:1 V), respectively. The average subgrade elevation for Cells 1 through 11 is equal to approximately 18 ft, NAVD88. An average bottom of waste elevation of 20 ft, NAVD88 was assumed accounting for a 2 -ft thick protective cover layer on top of the bottom liner system. Part of the leachate management system includes leachate storage tanks, constructed to hold leachate prior to hauling it off site by tanker trucks. For the purpose of this calculation package, the leachate storage tanks at Sutton were designed to provide storage for leachate generated over a period of five days at the peak daily leachate generation rate. The remainder of this calculation package details the leachate life cycle calculations and the sizing of the leachate storage tanks for Sutton landfill. GC5770/LeachateLifeCycle.docx Geosyniec'° consultants Page 2 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 3 METHOD OF ANALYSIS 3.1 Overview The method of estimating the total amount of leachate generated involves the following: identifying landfill development stages and sequencing (Section 3.2); estimating the time frames during which cells and phases will operate under open cell, intermediate cover, and final cover conditions, based on anticipated waste acceptance rates (Section 3.3); calculating liquid (i.e. runoff collected by chimney drains and any leachate generated) impingement rates into the leachate collection system (LCS) for various landfill operational scenarios (Section 3.3); and calculating the rate of leachate generation throughout the development stages of the landfill (i.e., from initial waste filling in Cell 1 to closure of Cell 11) (Section 3.5). The following subsections detail the methodology applied to the leachate life cycle generation rate calculation. 3.2 Facility Development and Sequencing The anticipated stages of landfill development used herein are based on the permit drawings submitted as part of this application. The sequence described below is provided as a basis for the leachate life cycle generation calculations. The operational sequence of the landfill facility is assumed to be as follows (associated waste fill heights for each condition are provided in Attachment 1): Phase 1 Filling Cell 3: Cell 3 open Filling Cell 4: Cell 3 under intermediate cover Cell 4 open Filling Cell 5: Cell 3 under intermediate cover Cell 4 under intermediate cover Cell 5 open Filling Cell 6: Cell 3 open Cell 4 under intermediate cover Cell 5 under intermediate cover Cell 6 open Filling Cell 7: Cell 3 under intermediate cover Cell 4 open GC5770/LeachateLifeCycle.docx Geosyniec'° consultants Page 3 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 Cell 5 under intermediate cover Cell 6 under intermediate cover Cell 7 open Filling Cell 8: Cell 3 under intermediate cover Cell 4 under intermediate cover Cell 5 open Cell 6 under intermediate cover Cell 7 under intermediate cover Cell 8 open Phase 2 Filling Cell 1: Phase 1 under intermediate cover Cell 1 open Filling Cell 2: Phase 1 under intermediate cover Cell 1 under intermediate cover Cell 2 open Phase 3 Filling Cell 9: Phase 1 under intermediate cover Phase 2 under final cover Cell 9 open Filling Cell 10: Phase 1 under final cover Phase 2 under final cover Cell 9 under intermediate cover Cell 10 open Filling Cell 11: Phase 1 under final cover Phase 2 under final cover Cell 9 under intermediate cover Cell 10 under intermediate cover Cell 11 open Placement of Final Cover 3.3 Facility Operational Time Line The landfill operational life and time line of development sequencing was estimated based on: (i) calculated disposal capacity for each of the development stages, (ii) the estimated waste acceptance rates, and (iii) in-place waste density. Waste disposal volume was calculated for each stage of landfill development based on the sequencing presented in Section 3.2. It is estimated that the waste acceptance rate will be approximately 1,250,000 tons per year during the first 4 year of operation, decreasing to 500,000 GC5770/LeachateLifeCycle.docx Geosyniec'° consultants Page 4 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 tons per year once approximately 5,000,000 tons of CCR have been disposed of in the landfill. Thereafter, the waste acceptance rate is assumed to remain constant at 500,000 tons per year. The air space utilization factor (AUF) at the site is expected to be approximately 1.2 ton/yd3 based on operational experience with other CCR disposal facilities. 3.4 Leachate Generation Rates 3.4.1 HELP Model Overview The Hydrogeologic Evaluation of Landfill Performance (HELP) model, Version 3.07 [Schroeder, et. al., EPA/600/R-94/168a and EPA/600/R-94/168b, 1994] is a quasi -two dimensional water balance computer program used to evaluate the movement of water through the waste and components of the liner system. The HELP model was used to calculate the leachate impingement (generation) rates for a number of different operational scenarios described in the following Section. 3.4.2 Leachate Generation Scenarios Using the HELP model, leachate and runoff generation rates were calculated for 9 operational scenarios (cases) assuming a unit area of 1 acre. The leachate and runoff generation rates for each case were calculated using the final top slope of 5% and side slope configuration of 33%. The leachate and runoff generation rates were estimated for the following cases: Case 1 This scenario represents initial conditions of operation in a cell after the placement of a start-up lift and additional lifts of waste for a total of 10 ft of waste. No runoff and no surface vegetation was assumed for this case. Case 2 This scenario represents ongoing landfilling operation with 25 ft of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). Case 3 This scenario represents ongoing landfilling operation with 50 ft of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). Case 4 This scenario represents intermediate conditions of operation with 50 ft of waste under intermediate cover. For this case, poor ground surface vegetation coverage was assumed. Case 5 This scenario represents ongoing landfilling operation with 70 ft of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). GC5770/LeachateLifeCycle.docx Geosyniec'° consultants Page 5 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 Case 6 This scenario represents intermediate conditions of operation with 70 ft of waste under intermediate cover. For this case, poor ground surface vegetation coverage was assumed. Case 7 This scenario represents the maximum waste thickness of 90 ft, of waste. For this case, bare ground surface without vegetation was assumed (i.e., area is open and receiving waste). Case 8 This scenario represents the maximum waste thickness of 90 ft, under intermediate cover, before construction of the final cover. For this case, runoff from the intermediate cover surfaces was allowed and poor surface vegetation was assumed. Case 9 This scenario represents post -closure conditions with 90 ft of waste and the final cover installed. This case represents the lowest potential for leachate generation, leakage, and head in the leachate collection systems as the final cover system over the waste minimizes percolation of rainfall through the waste. For this case, fair stand of grass coverage was assumed for surface vegetation. Note that runoff generation was not considered for the intermediate and final cover cases, since the chimney drains are anticipated to be plugged at those times. 3.4.3 HELP Model Calculations Leachate impingement and runoff rates were obtained from the HELP model analyses for each of the cases presented in Section 3.4.2. Table 1 presents a summary of the liquid impingement rate (i.e. runoff and leachate) calculated for each operational scenario and Attachment 2 contains the HELP output information. It is noted that the peak monthly average values for runoff and lateral drainage in the geocomposite drainage layer were utilized as the impingement rate presented in Table 1. Because this analysis spans a time frame of years, an average monthly impingement rate may be appropriate. However, to add a degree of conservatism to the calculations, the peak average monthly value was selected. A detailed description of the HELP model assumptions, input parameters, and data can be found in the in the calculation package titled "Leachate Collection System Analysis" submitted as part of this application. 3.5 Leachate Generation Life Cycle Calculation Based on the information described in Sections 3.2 through 3.4, leachate generation life cycle calculations were performed using an Excel® spreadsheet, which is presented in Attachment 1. The calculations were performed in a 2 -step approach: GC5770/LeachateLifeCycle.docx Geosyniec'° consultants Page 6 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 Step 1: Estimate CCR disposal volumes, disposal times, and leachate generation rate for each operational scenario; and Step 2: Estimate cumulative leachate generation (e.g., multiple cells being filled) and cell activity times based on cell or phase being filled. The spreadsheets summarize the filling sequence (Section 3.2), leachate generation scenario (refer to Section 3.4.2), and cell or phase being filled. Furthermore, the spreadsheet presents the following parameters used in the leachate generation life cycle calculations: Infiltration Area. This is the sum of top and side slope areas used to calculate the leachate generated as a function of the impingement rates. Waste Volume Received. This is the estimated volume of CCR received for the duration of each leachate generation scenario (i.e., 10 ft of CCR, 50 ft of CCR, etc.). Discrete Time Frame. This is the time in days when leachate will be generated for a given leachate generation scenario. The discrete time frame is calculated based on the waste acceptance rates (ton/year), estimated volume of CCR received during the filling sequence, and AUF. Cumulative Time. This is calculated based on the waste acceptance rates (ton/year), estimated volume of CCR received during the filling sequence, and AUF. Liquid Generated. This is the total runoff and leachate generated by each cell for a given scenario (e.g., 10 ft of waste, 50 ft of CCR). Liquid Generation Rate. This is the calculated rate of runoff and leachate generation, based on the total liquid generated by each contributing cell and/or phase. For example, during Phase 1 (e.g., filling of Cell 6 to 50 ft of CCR), the total liquid generation rate is a combination of the following contributions: Cell 3 with 70 ft of CCR under intermediate cover for approximately 156 days l; Cell 4 with 50 ft of CCR under intermediate cover for approximately 156 days; Cell 5 with 50 ft of CCR under intermediate cover for approximately 156 days; and Cell 6 with 50 ft of CCR for approximately 156 days. 1 156 days is the estimated time required to fill Cell 6 from 10 ft to 50 ft of CCR: 35 days under 10 ft of CCR + 50 days under 25 ft of CCR + 71 days under 50 ft of CCR. GC5770/1,eachateLifeCycle.docx Geosyniec'° consultants Page 7 of 7 Written by: J. Colley Date: 12/08/15 Reviewed by: V. Damasceno Date: 12/08/15 Client: Duke Energy Project: Sutton Landfill Project No.: GC5770 Phase No.: 02 4 LEACHATE STORAGE CAPACITY As previously mentioned, leachate storage tanks will be constructed and used to hold leachate prior to hauling it off site by tanker trucks. The design capacity for the proposed storage containers was selected to provide sufficient storage for leachate generated during a period of five days at the peak leachate generation rate. As shown in Figure 1, a peak leachate generation rate of approximately 186,234 gallons per day was obtained from the leachate life cycle calculations. The peak daily leachate generation rate is expected to occur during the final filling stages of Phase 3, after approximately 8 years of landfill operation. The volume of leachate generated in five days, at the peak leachate generation rate, is calculated to be approximately 931,170 gallons. Leachate storage containers will be constructed with a total combined storage capacity of approximately 1,000,000 gallons to accommodate the five day storage requirement expected at the site. A secondary containment tank (e.g., minimum 110% total volume of the largest tank) will also be installed as part of the leachate storage area. 5 REFERENCES Schroeder, P. R., Aziz, N. M., Lloyd, C. M. and Zappi, P. A. "The Hydrologic Evaluation of Landfill Performance (HELP) Model: User's Guide for Version 3", EPA/600/R-94/168a, September 1994, U.S. Environmental Protection Agency Office of Research and Development, Washington, DC, 1994. Schroeder, P.R., Dozier, T.S., Zappi, P.A., McEnroe, B.M., Sjostrom, J.W., and Peyton, R. L. "The Hydrologic Evaluation of Landfill Performance (HELP) Model: Engineering Documentation for Version 3", EPA/600/R-94/168b, September 1994, U.S. Environmental Protection Agency Office of Research and Development, Washington, DC, 1994. GC5770/1,eachateLifeCycle.docx TABLES Table 1. Calculated Leachate Impingement Rate Summary Case Description Liquid Impingement Ratelll (ft3/ac/day) Top Slope (5%) Side Slope (5%) Case 1 10 ft of waste 733.958 3.995 Case 2 25 ft of waste 732.372 4.270 Case 3 50 ft of waste 729.248 3.471 Case 4 50 ft of waste (interim) 126.383 121.172 Case 5 70 ft of waste 727.530 1.872 Case 6 70 ft of waste (interim) 120.611 114.767 Case 7 90 ft of waste 725.968 4.627 Case 8 90 ft of waste (interim) 113.622 105.810 Case 9 90 ft of waste (final cover) 0.000 0.000 Note(s): [1] Liquid impingement rate includes runoff collected by the chimney drains and any leachate generated. Runoff generation was not considered for the intermediate and final cover cases, since the chimney drains are anticipated to be plugged at those times. FIGURES 200,000 180,000 160,000 140,000 t bA s y 100,000 J 80,000 60,000 40,000 20,000 t1 Figure 1. Leachate Life Cycle and Received Waste Summary v r v > lu i o U o U r U YVI #� Y #7 VI r O O E N E m v w GJ w d r d a r r d c c +1 N m o m ra C L � N 0U/! � JP J •r ! ' / d d t t J / t / CCR being placed overentire footprint ! . in preparation for /t ..finalclosur} / ! 0 2 4 6 8 Elapsed Time (Years) 10,000,000 9,000, 000 8,000, 000 7,000,000 n n z 6,000,000 2. 0 m :+ 0 5,000,000 4, 4,000,000 3,000, 000 2,000,000 1,000,000 0 10 12 r r i r r r r J r r d r r r r d d t t J / t / CCR being placed overentire footprint ! . in preparation for /t ..finalclosur} / ! 0 2 4 6 8 Elapsed Time (Years) 10,000,000 9,000, 000 8,000, 000 7,000,000 n n z 6,000,000 2. 0 m :+ 0 5,000,000 4, 4,000,000 3,000, 000 2,000,000 1,000,000 0 10 12 ATTACHMENT Leachate Generation Life Cycle Calculations Leachate Generation Life Cycle Calculation Sheet L.V. Sutton Energy Complex Onsite Landfill Wilmington, North Carolina 1 Cell 5 10 10 ft of waste Impingement Rate 4.0 373,402.38 8.57 0.00 Total plan 373,402.38 8.57 138,297.18 115,248 Discrete 34 6,292 47,064 1 Thickness Leachate Generation 3 (ft /ac/day) Top Area Side Slope Area area Infiltration CCR Volume Received Cumulative Time Leachate Leachate Phase Cell of waste Scenario 1 Cell 5 50 50 ft of waste 729.2 3.5 263,670.62 Area 109,731.76 2.52 waste (tons) Frame Gen. Rate Gen Rate 2,160,096 67 (ft) 33,086 Top Area Side Slope (ft2) (acre) (ft2) (acre) (ft2) (acre) (yd 3) (tons) 263,670.62 6.05 (ft3/day) (gal/day) 2,160,096 0 1,070 8,006 1 Cell 5 70 70 ft of waste 727.5 1.9 208,804.74 4.79 164,597.64 3.78 373,402.38 (days) 174,990.87 145,826 1 Cell 3 10 10 ft of waste 734.0 4.0 441,240.74 10.13 0.00 0.00 441,240.74 10.13 163,422.50 136,185 136,185 40 7,435 55,615 1 Cell 3 25 25 ft of waste 732.4 4.3 382,786.80 8.79 58,453.95 1.34 441,240.74 10.13 228,896.54 190,747 326,933 56 6,442 48,186 1 Cell 3 50 50 ft of waste 729.2 3.5 285,363.55 6.55 155,877.19 3.58 441,240.74 10.13 309,328.87 257,774 584,707 75 4,790 35,830 1 Cell 3 50 50 ft of waste (interim) 126.4 121.2 285,363.55 6.55 155,877.19 3.58 285,363.55 6.55 0.00 0 584,707 0 1,262 9,437 1 Cell 3 70 70 ft of waste 727.5 1.9 207,424.96 4.76 233,815.79 5.37 441,240.74 10.13 182,514.26 152,095 736,802 44 3,474 25,990 1 Cell 3 70 70 ft of waste (interim) 120.6 114.8 207,424.96 4.76 233,815.79 5.37 207,424.96 4.76 0.00 0 736,802 0 1,190 8,905 1 Cell 3 90 90 ft of waste 726.0 4.6 129,486.36 2.97 311,754.38 7.16 441,240.74 10.13 124,781.97 103,985 840,787 30 2,191 16,391 1 Cell 3 90 90 ft of waste (interim) 113.6 105.8 129,486.36 2.97 311,754.38 7.16 129,486.36 2.97 0.00 0 840,787 0 1,095 8,191 1 Cell 3 90 90 ft of waste (final cover) 0.0 0.0 129,486.36 2.97 311,754.38 7.16 129,486.36 2.97 0.00 0 840,787 0 0 0 1 Cell 4 10 10 ft of waste 734.0 4.0 398,771.55 9.15 0.00 0.00 398,771.55 9.15 147,693.17 123,078 963,864 36 6,719 50,262 1 Cell 4 25 25 ft of waste 732.4 4.3 353,681.13 8.12 45,090.42 1.04 398,771.55 9.15 209,014.64 174,179 1,138,043 51 5,951 44,515 1 Cell 4 50 50 ft of waste 729.2 3.5 278,530.43 6.39 120,241.12 2.76 398,771.55 9.15 292,690.54 243,909 1,381,952 71 4,673 34,953 1 Cell 4 50 50 ft of waste (interim) 126.4 121.2 278,530.43 6.39 120,241.12 2.76 278,530.43 6.39 0.00 0 1,381,952 0 1,143 8,547 1 Cell 4 70 70 ft of waste 727.5 1.9 218,409.87 5.01 180,361.68 4.14 398,771.55 9.15 184,051.97 153,377 1,535,329 45 3,656 27,346 1 Cell 4 70 70 ft of waste (interim) 120.6 114.8 218,409.87 5.01 180,361.68 4.14 218,409.87 5.01 0.00 0 1,535,329 0 1,080 8,079 1 Cell 4 90 90 ft of waste 726.0 4.6 158,289.31 3.63 240,482.24 5.52 398,771.55 9.15 139,518.22 116,265 1,651,594 34 2,664 19,925 1 Cell 4 90 90 ft of waste (interim) 113.6 105.8 158,289.31 3.63 240,482.24 5.52 158,289.31 3.63 0.00 0 1,651,594 0 997 7,458 1 Cell 4 90 90 ft of waste (final cover) 0.0 0.0 158,289.31 3.63 240,482.24 5.52 158,289.31 3.63 0.00 0 1,651,594 0 0 0 1 Cell 5 10 10 ft of waste 734.0 4.0 373,402.38 8.57 0.00 0.00 373,402.38 8.57 138,297.18 115,248 1,766,842 34 6,292 47,064 1 Cell 5 25 25 ft of waste 732.4 4.3 332,252.97 7.63 41,149.41 0.94 373,402.38 8.57 196,015.38 163,346 1,930,188 48 5,590 41,818 1 Cell 5 50 50 ft of waste 729.2 3.5 263,670.62 6.05 109,731.76 2.52 373,402.38 8.57 275,890.55 229,909 2,160,096 67 4,423 33,086 1 Cell 5 50 50 ft of waste (interim) 126.4 121.2 263,670.62 6.05 109,731.76 2.52 263,670.62 6.05 0.00 0 2,160,096 0 1,070 8,006 1 Cell 5 70 70 ft of waste 727.5 1.9 208,804.74 4.79 164,597.64 3.78 373,402.38 8.57 174,990.87 145,826 2,305,922 43 3,494 26,141 1 Cell 5 70 70 ft of waste (interim) 120.6 114.8 208,804.74 4.79 164,597.64 3.78 208,804.74 4.79 0.00 0 2,305,922 0 1,012 7,569 1 Cell 5 90 90 ft of waste 726.0 4.6 153,938.86 3.53 219,463.52 5.04 373,402.38 8.57 134,349.48 111,958 2,417,880 33 2,589 19,366 1 Cell 5 90 90 ft of waste (interim) 113.6 105.8 153,938.86 3.53 219,463.52 5.04 153,938.86 3.53 0.00 0 2,417,880 0 935 6,992 1 Cell 5 90 90 ft of waste (final cover) 0.0 0.0 153,938.86 3.53 219,463.52 5.04 153,938.86 3.53 0.00 0 2,417,880 0 0 0 1 Cell 6 10 10 ft of waste 734.0 4.0 389,882.99 8.95 0.00 0.00 389,882.99 8.95 144,401.11 120,334 2,538,214 35 6,569 49,142 1 Cell 6 25 25 ft of waste 732.4 4.3 347,920.91 7.99 41,962.09 0.96 389,882.99 8.95 204,945.53 170,788 2,709,002 50 5,854 43,789 1 Cell 6 50 50 ft of waste 729.2 3.5 277,984.10 6.38 111,898.90 2.57 389,882.99 8.95 289,770.84 241,476 2,950,478 71 4,663 34,879 1 Cell 6 50 50 ft of waste (interim) 126.4 121.2 277,984.10 6.38 111,898.90 2.57 277,984.10 6.38 0.00 0 2,950,478 0 1,118 8,362 1 Cell 6 70 70 ft of waste 727.5 1.9 2221034.65 5.10 167,848.34 3.85 389,882.99 8.95 185,192.13 154,327 3,104,805 45 3,716 27,795 1 Cell 6 70 70 ft of waste (interim) 120.6 114.8 222,034.65 5.10 167,848.34 3.85 222,034.65 5.10 0.00 0 3,104,805 0 1,057 7,907 1 Cell 6 90 90 ft of waste 726.0 4.6 166,085.20 3.81 223,797.79 5.14 389,882.99 8.95 143,748.09 119,790 3,224,595 35 2,792 20,884 1 Cell 6 90 90 ft of waste (interim) 113.6 105.8 166,085.20 3.81 223,797.79 5.14 166,085.20 3.81 0.00 0 3,224,595 0 977 7,307 1 Cell 6 90 90 ft of waste (final cover) 0.0 0.0 166,085.20 3.81 223,797.79 5.14 166,085.20 3.81 0.00 0 3,224,595 0 0 0 1 Cell 7 10 10 ft of waste 734.0 4.0 392,654.17 9.01 0.00 0.00 392,654.17 9.01 145,427.47 121,190 3,345,784 35 6,616 49,491 Impingement Rate Total plan Discrete Thickness Leachate Generation s (ft /ac/day) Top Area Side Slope Area area Infiltration CCR Volume Received Cumulative Time Leachate Leachate Phase Cell of waste Area Gen. Rate Gen Rate (ft) Scenario Top Area Side Slope W) (acre) W) (acre) W) (acre) (yd 3) (tons) waste (tons) Fraay) (ft3/day) (gal/day) 1 Cell 7 25 25 ft of waste 732.4 4.3 351,270.89 8.06 41,383.29 0.95 392,654.17 9.01 206,645.85 172,205 3,517,989 50 5,910 44,210 1 Cell 7 50 50 ft of waste 729.2 3.5 282,298.74 6.48 110,355.44 2.53 392,654.17 9.01 293,319.27 244,433 3,762,422 71 4,735 35,419 1 Cell 7 50 50 ft of waste (interim) 126.4 121.2 282,298.74 6.48 110,355.44 2.53 282,298.74 6.48 0.00 0 3,762,422 0 1,126 8,423 1 Cell 7 70 70 ft of waste 727.5 1.9 227,121.02 5.21 165,533.16 3.80 392,654.17 9.01 188,673.98 157,228 3,919,650 46 3,800 28,429 1 Cell 7 70 70 ft of waste (interim) 120.6 114.8 227,121.02 5.21 165,533.16 3.80 227,121.02 5.21 0.00 0 3,919,650 0 1,065 7,967 1 Cell 7 90 90 ft of waste 726.0 4.6 171,943.30 3.95 220,710.87 5.07 392,654.17 9.01 147,801.60 123,168 4,042,818 36 2,889 21,612 1 Cell 7 90 90 ft of waste (interim) 113.6 105.8 171,943.30 3.95 220,710.87 5.07 171,943.30 3.95 0.00 0 4,042,818 0 985 7,365 1 Cell 7 90 90 ft of waste (final cover) 0.0 0.0 171,943.30 3.95 220,710.87 5.07 171,943.30 3.95 0.00 0 4,042,818 0 0 0 1 Cell 8 10 10 ft of waste 734.0 4.0 430,074.32 9.87 0.00 0.00 430,074.32 9.87 159,286.78 132,739 4,175,557 39 7,246 54,207 1 Cell 8 25 25 ft of waste 732.4 4.3 385,684.49 8.85 44,389.82 1.02 430,074.32 9.87 226,599.67 188,833 4,364,390 55 6,489 48,540 1 Cell 8 50 50 ft of waste 729.2 3.5 311,701.46 7.16 118,372.86 2.72 430,074.32 9.87 322,863.87 269,053 4,633,444 79 5,228 39,106 1 Cell 8 50 50 ft of waste (interim) 126.4 121.2 311,701.46 7.16 118,372.86 2.72 311,701.46 7.16 0.00 0 4,633,444 0 1,234 9,228 1 Cell 8 70 70 ft of waste 727.5 1.9 252,515.03 5.80 177,559.29 4.08 430,074.32 9.87 208,969.07 174,141 4,807,584 51 4,225 31,606 1 Cell 8 70 70 ft of waste (interim) 120.6 114.8 252,515.03 5.80 177,559.29 4.08 252,515.03 5.80 0.00 0 4,807,584 0 1,167 8,730 1 Cell 8 90 90 ft of waste 726.0 4.6 193,328.59 4.44 236,745.72 5.43 430,074.32 9.87 165,127.27 137,606 4,945,191 40 3,247 24,290 1 Cell 8 90 90 ft of waste (interim) 113.6 105.8 193,328.59 4.44 236,745.72 5.43 193,328.59 4.44 0.00 0 4,945,191 0 1,079 8,074 1 Cell 8 90 90 ft of waste (final cover) 0.0 0.0 193,328.59 4.44 236,745.72 5.43 193,328.59 4.44 0.00 0 4,945,191 0 0 0 2 Cell 1 10 10 ft of waste 734.0 4.0 296,691.16 6.81 0.00 0.00 296,691.16 6.81 109,885.62 91,571 5,036,762 67 4,999 37,396 2 Cell 1 25 25 ft of waste 732.4 4.3 241,061.57 5.53 55,629.59 1.28 296,691.16 6.81 149,375.76 124,480 5,161,242 91 4,058 30,359 2 Cell 1 50 50 ft of waste 729.2 3.5 148,345.58 3.41 148,345.58 3.41 296,691.16 6.81 180,281.09 150,234 5,311,476 110 2,495 18,666 2 Cell 1 50 50 ft of waste (interim) 126.4 121.2 148,345.58 3.41 148,345.58 3.41 148,345.58 3.41 0.00 0 5,311,476 0 843 6,307 2 Cell 1 70 70 ft of waste 727.5 1.9 74,172.79 1.70 222,518.37 5.11 296,691.16 6.81 82,414.21 68,679 5,380,154 50 1,248 9,339 2 Cell 1 70 70 ft of waste (interim) 120.6 114.8 74,172.79 1.70 222,518.37 5.11 74,172.79 1.70 0.00 0 5,380,154 0 792 5,922 2 Cell 1 90 90 ft of waste 726.0 4.6 0.00 0.00 296,691.16 6.81 296,691.16 6.81 27,471.40 22,893 5,403,047 17 32 236 2 Cell 1 90 90 ft of waste (interim) 113.6 105.8 0.00 0.00 296,691.16 6.81 0.00 0.00 0.00 0 5,403,047 0 721 5,391 2 Cell 1 90 90 ft of waste (final cover) 0.0 0.0 0.00 0.00 296,691.16 6.81 0.00 0.00 0.00 0 5,403,047 0 0 0 2 Cell 2 10 10 ft of waste 734.0 4.0 343,103.31 7.88 0.00 0.00 343,103.31 7.88 127,075.30 105,896 5,508,943 77 5,781 43,245 2 Cell 2 25 25 ft of waste 732.4 4.3 281,882.80 6.47 61,220.51 1.41 343,103.31 7.88 173,607.25 144,673 5,653,616 106 4,745 35,497 2 Cell 2 50 50 ft of waste 729.2 3.5 179,848.61 4.13 163,254.70 3.75 343,103.31 7.88 213,764.54 178,137 5,831,753 130 3,024 22,620 2 Cell 2 50 50 ft of waste (interim) 126.4 121.2 179,848.61 4.13 163,254.70 3.75 179,848.61 4.13 0.00 0 5,831,753 0 976 7,300 2 Cell 2 70 70 ft of waste 727.5 1.9 98,221.26 2.25 244,882.04 5.62 343,103.31 7.88 102,988.84 85,824 5,917,577 63 1,651 12,350 2 Cell 2 70 70 ft of waste (interim) 120.6 114.8 98,221.26 2.25 244,882.04 5.62 98,221.26 2.25 0.00 0 5,917,577 0 917 6,861 2 Cell 2 90 90 ft of waste 726.0 4.6 16,593.92 0.38 326,509.39 7.50 343,103.31 7.88 42,524.14 35,437 5,953,014 26 311 2,328 2 Cell 2 90 90 ft of waste (interim) 113.6 105.8 16,593.92 0.38 326,509.39 7.50 16,593.92 0.38 0.00 0 5,953,014 0 836 6,257 2 Cell 2 90 90 ft of waste (final cover) 0.0 0.0 16,593.92 0.38 326,509.39 7.50 16,593.92 0.38 0.00 0 5,953,014 0 0 0 3 Cell 9 10 10 ft of waste 734.0 4.0 434,111.23 9.97 0.00 0.00 434,111.23 9.97 160,781.94 133,985 6,086,999 98 7,314 54,716 3 Cell 9 25 25 ft of waste 732.4 4.3 390,238.32 8.96 43,872.91 1.01 434,111.23 9.97 228,985.99 190,822 6,277,821 139 6,565 49,112 3 Cell 9 50 50 ft of waste 729.2 3.5 317,116.79 7.28 116,994.44 2.69 434,111.23 9.97 327,479.22 272,899 6,550,720 199 5,318 39,783 3 Cell 9 50 50 ft of waste (interim) 126.4 121.2 317,116.79 7.28 116,994.44 2.69 317,116.79 7.28 0.00 0 6,550,720 0 1,246 9,317 3 Cell 9 70 70 ft of waste 727.5 1.9 258,619.58 5.94 175,491.66 4.03 434,111.23 9.97 213,235.69 177,696 6,728,416 130 4,327 32,368 Impingement Rate Total plan Discrete Thickness Leachate Generation s (ft /ac/day) Top Area Side Slope Area area Infiltration CCR Volume Received Cumulative Time Leachate Leachate Phase Cell of waste Area Gen. Rate Gen Rate (ft) Scenario Top Area Side Slope W) (acre) W) (acre) W) (acre) (yd 3) (tons) waste (tons) Fraay) (ft3/day) (gal/day) 3 Cell 9 70 70 ft of waste (interim) 120.6 114.8 258,619.58 5.94 175,491.66 4.03 258,619.58 5.94 0.00 0 6,728,416 0 1,178 8,815 3 Cell 9 90 90 ft of waste 726.0 4.6 200,122.36 4.59 233,988.87 5.37 434,111.23 9.97 169,904.42 141,587 6,870,003 103 3,360 25,135 3 Cell 9 90 90 ft of waste (interim) 113.6 105.8 200,122.36 4.59 233,988.87 5.37 200,122.36 4.59 0.00 0 6,870,003 0 1,090 8,157 3 Cell 9 90 90 ft of waste (final cover) 0.0 0.0 200,122.36 4.59 233,988.87 5.37 200,122.36 4.59 0.00 0 6,870,003 0 0 0 3 Cell 10 10 10 ft of waste 734.0 4.0 414,791.25 9.52 0.00 0.00 414,791.25 9.52 153,626.39 128,022 6,998,025 93 6,989 52,281 3 Cell 10 25 25 ft of waste 732.4 4.3 368,086.27 8.45 46,704.99 1.07 414,791.25 9.52 217,465.98 181,222 7,179,247 132 6,193 46,328 3 Cell 10 10 50 ft of waste 729.2 3.5 290,244.62 6.66 124,546.63 2.86 414,791.25 9.52 107,498.01 89,582 7,268,829 65 4,869 36,422 3 Cell 10 50 50 ft of waste (interim) 126.4 121.2 290,244.62 6.66 124,546.63 2.86 290,244.62 6.66 429,992.03 358,327 7,627,155 262 1,189 8,891 3 Cell 10 70 70 ft of waste 727.5 1.9 2271971.31 5.23 186,819.94 4.29 414,791.25 9.52 191,931.83 159,943 7,787,099 117 3,816 28,542 3 Cell 10 70 70 ft of waste (interim) 120.6 114.8 227,971.31 5.23 186,819.94 4.29 227,971.31 5.23 0.00 0 7,787,099 0 1,123 8,404 3 Cell 10 90 90 ft of waste 726.0 4.6 165,698.00 3.80 249,093.26 5.72 414,791.25 9.52 145,803.45 121,503 7,908,601 89 2,788 20,855 3 Cell 10 90 90 ft of waste (interim) 113.6 105.8 165,698.00 3.80 249,093.26 5.72 165,698.00 3.80 0.00 0 7,908,601 0 1,037 7,759 3 Cell 10 90 90 ft of waste (final cover) 0.0 0.0 165,698.00 3.80 249,093.26 5.72 165,698.00 3.80 0.00 0 7,908,601 0 0 0 3 Cell 11 10 10 ft of waste 734.0 4.0 456,870.13 10.49 0.00 0.00 456,870.13 10.49 169,211.16 141,009 8,049,611 103 7,698 57,585 3 Cell 11 25 25 ft of waste 732.4 4.3 391,761.55 8.99 65,108.58 1.49 456,870.13 10.49 235,731.02 196,443 8,246,053 143 6,593 49,319 3 Cell 11 50 50 ft of waste 729.2 3.5 283,247.25 6.50 173,622.88 3.99 456,870.13 10.49 312,504.07 260,420 8,506,473 190 4,756 35,575 3 Cell 11 50 50 ft of waste (interim) 126.4 121.2 283,247.25 6.50 173,622.88 3.99 283,247.25 6.50 0.00 0 8,506,473 0 1,305 9,760 3 Cell 11 70 70 ft of waste 727.5 1.9 196,435.81 4.51 260,434.31 5.98 456,870.13 10.49 177,660.39 148,050 8,654,524 108 3,292 24,626 3 Cell 11 70 70 ft of waste (interim) 120.6 114.8 196,435.81 4.51 260,434.31 5.98 196,435.81 4.51 0.00 0 8,654,524 0 1,230 9,202 3 Cell 11 90 90 ft of waste 726.0 4.6 109,624.38 2.52 347,245.75 7.97 456,870.13 10.49 113,355.63 94,463 8,748,987 69 1,864 13,943 3 Cell 11 90 90 ft of waste (interim) 113.6 105.8 109,624.38 2.52 347,245.75 7.97 109,624.38 2.52 0.00 0 8,748,987 0 1,129 8,449 3 Cell 11 90 90 ft of waste (final cover) 0.0 0.0 109,624.38 2.52 347,245.75 7.97 109,624.38 2.52 0.00 0 8,748,987 0 0 0 Leachate Generation Life Cycle Calculation Sheet - Summary L.V. Sutton Energy Complex Onsite Landfill Wilmington, North Carolina Note(s): [I] Peak leachate generation for Phase 1. [2] Peak leachate generation for build -out conditions. Leachate Estimated Time Construction Sequence Generation Cumulative (years) CCR Disposal (tons) (days) (gal/day) Cell 3 55,615 40 0.11 136,185 48,186 56 0.26 326,933 Cell 4 86,092 111 0.57 707,784 53,952 51 0.71 881,963 Cell 5 91,454 105 0.99 1,241,120 59,802 48 1.12 1,404,466 v Cell 100,212 102 1.40 1,754,709 L 69,779 50 1.54 1,925,497 Cell 7 126,914 150 1.95 2,440,257 96,828 95 2.21 2,765,839 Cell 141,112111 153 2.63 3,288,836 109,310 100 2.91 3,631,996 99,994 124 3.25 4,058,277 Cell 1 109,427 118 3.57 4,461,347 79,514 91 3.82 4,772,546 N Cell 122,760 77 4.03 5,037,286 v 103,319 215 4.62 5,362,417 t a 103,319 110 4.92 5,544,826 78,082 130 5.28 5,756,232 65,794 50 5.41 5,859,448 Cell 9 122,144 160 5.85 6,114,413 111,050 139 6.24 6,341,922 Cell 10 170,818 124 6.57 6,549,589 159,183 365 7.58 7,089,514 128,047 33 7.67 7,176,834 Cell 11 186,234121 138 8.04 7,408,820 168,131 245 8.71 7,788,565 164,965 170 9.18 8,068,035 m 139,162 133 9.54 8,299,279 t a 97,711 216 10.14 8,644,932 84,686 103 10.42 8,838,388 82,642 197 10.96 9,160,972 40,557 0 10.96 9,215,938 37,933 69 11.15 9,365,696 24,365 45 11.27 9,483,534 16,208 45 11.39 9,602,079 8,449 45 11.52 9,721,336 0 45 11.64 9,841,307 Note(s): [I] Peak leachate generation for Phase 1. [2] Peak leachate generation for build -out conditions. ATTACHMENT 2 HELP Output Information 'rk'r :�: :�:•-?c?c?c?c?c:Y?r:Y?r:Y?r>c?c>c?c>c?c?c?c?c?c ?c ?c ?c ?c ,. x.. x>c?rir?rir?r it s.>.s.>.s..c...c...c...c..xs.xs. xi: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?: sk >rx kk HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE kk HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY kk Y?r USAE WATERWAYS EXPERIMENT STATION ?°k FOR USEPA RISK REDUCTION ENGINEERING LABORATORY 'rk'r :�: :�:•-?c?c?c?c?ck?rk?rk?r>ck>ck>c?c?c?c?c?c?ck?ck,.x,.x>ckkkic kic s.>.s.>.kkk.c.. .c .. .c .. xs. xs.xkkkkkkk?r .rx .rx PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\prj\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\pr3\lvsutton\tdchim\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\prj\lvsutton\tdchim\ASH10FT.D10 OUTPUT DATA FILE: c:\help\pr3\lvsutton\tdchim\ASH10FT.OUT TIME: 9:24 DATE: 11/25/2015 :Y sY :Y sY :Y is :Y s';its';its'; it irk irk irk i; it i; it i; kir it it iririr it irk irk it ir?r it it s'r it s'rki:ksY k s'r?cs'r?cs'r?cs'r ?ckksY ksYkksYk sYk sY kir kir i:kkkk TITLE: L.V. Sutton Greenfield Landfill ?::Y?::Y?::Y?:xkkkxkirk irk it is x?; ?; skx it ?r it ?rir?rir?rkxkxkxkkkkkkxkxkxkkkkkkkkkkkkkkkkkkkkkirk irkkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 120.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2257 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0864 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.12 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.12 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2661 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. GROWING SEASON (JULIAN DATE) = SCS RUNOFF CURVE NUMBER = 96.70 END OF FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.612 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 32.546 INCHES TOTAL INITIAL WATER = 32.546 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 CHARLESTON START OF GROWING SEASON (JULIAN DATE) = 0 NORMAL MEAN MONTHLY END OF GROWING SEASON (JULIAN DATE) = 367 JAN/JUL ------- EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 2.75 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL ------- FEB/AUG MAR/SEP -------------- APR/OCT ------- MAY/NOV ------- JUN/DEC ------- 2.23 3.34 4.14 4.04 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES ?r?:?r?:?r?:?r?r?r?r?r?r?rk?: �?: �?:>r?r>rir>rkk k?r kirkkkkir>rk>rkkkkkkkkkkkisk isk isk isk kkkkkkkkkkkk?ck?ck?r ?: k?: k?: AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.349 1.203 1.660 1.766 1.298 1.972 2.700 6.070 1.556 1.009 1.796 1.394 STD. DEVIATIONS 0.496 0.866 1.130 1.460 1.207 1.550 1.910 3.244 1.369 1.251 1.423 1.102 EVAPOTRANSPIRATION ------------------ TOTALS 1.562 1.761 2.796 2.680 2.216 2.711 3.460 3.846 2.783 1.678 1.291 1.307 STD. DEVIATIONS 0.160 0.214 0.395 0.972 0.954 1.019 1.202 0.995 0.736 0.693 0.390 0.146 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0629 0.0598 0.0642 0.0663 0.0654 0.0734 0.0630 0.0650 0.0723 0.0841 0.0763 0.0652 STD. DEVIATIONS 0.0507 0.0419 0.0466 0.0512 0.0624 0.1108 0.0999 0.0923 0.0835 0.0859 0.0600 0.0465 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.1442 0.1365 0.1459 0.1474 0.1443 0.1480 0.1298 0.1289 0.1382 0.1582 0.1565 0.1484 STD. DEVIATIONS 0.0740 0.0623 0.0754 0.0745 0.0774 0.0951 0.1014 0.1063 0.1031 0.1059 0.0865 0.0728 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.1436 0.1358 0.1465 0.1478 0.1432 0.1490 0.1310 0.1288 0.1367 0.1568 0.1572 0.1491 STD. DEVIATIONS 0.0730 0.0633 0.0758 0.0729 0.0776 0.0945 0.1012 0.1058 0.1025 0.1065 0.0878 0.0744 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0022 0.0015 0.0017 0.0021 0.0021 0.0016 0.0015 0.0017 0.0017 0.0016 0.0015 0.0016 STD. DEVIATIONS 0.0035 0.0020 0.0019 0.0035 0.0033 0.0018 0.0017 0.0021 0.0026 0.0025 0.0022 0.0022 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0055 0.0058 0.0056 0.0060 0.0057 0.0067 RUNOFF 0.0055 0.0057 0.0066 0.0074 0.0069 0.0057 STD. DEVIATIONS 0.0045 0.0041 0.0041 0.0046 0.0055 0.0101 ( 0.0088 0.0081 0.0076 0.0076 0.0055 0.0041 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 1.72612 ( 0.76683) ------------------------------------- AVERAGES 0.0126 0.0131 0.0129 0.0134 0.0126 0.0135 0.0115 0.0113 0.0124 0.0138 0.0143 0.0131 STD. DEVIATIONS 0.0064 0.0061 0.0067 0.0066 0.0068 0.0086 1.72563 0.0089 0.0093 0.0093 0.0094 0.0080 0.0065 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 22.772 ( 5.8563) 82660.59 42.487 EVAPOTRANSPIRATION 28.091 ( 2.6696) 101969.02 52.411 LATERAL DRAINAGE COLLECTED 0.81800 ( 0.62436) 2969.356 1.52623 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 1.72612 ( 0.76683) 6265.818 3.22059 LAYER 4 AVERAGE HEAD ON TOP 0.006 ( 0.005) OF LAYER 4 LATERAL DRAINAGE COLLECTED 1.72563 ( 0.76598) 6264.040 3.21968 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.012 0.00001 LAYER 7 AVERAGE HEAD ON TOP 0.013 ( 0.006) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02088 ( 0.02559) 75.798 0.03896 LAYER 8 CHANGE IN WATER STORAGE 0.170 ( 2.0849) 615.91 0.317 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.314 15658.4082 DRAINAGE COLLECTED FROM LAYER 3 0.02045 74.24708 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.017141 62.22053 AVERAGE HEAD ON TOP OF LAYER 4 0.056 MAXIMUM HEAD ON TOP OF LAYER 4 0.111 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 1.9 FEET DRAINAGE COLLECTED FROM LAYER 5 0.01710 62.07855 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00006 AVERAGE HEAD ON TOP OF LAYER 6 0.047 MAXIMUM HEAD ON TOP OF LAYER 6 0.093 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000700 2.54064 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4047 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0470 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 29.4545 0.2455 2 5.3999 0.2250 3 0.0102 0.0340 4 0.0000 0.0000 5 0.0166 0.0830 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5671 0.2139 SNOW WATER 0.000 -------- - --- --- - ------- -- ---------- - - - ** HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE ** ** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ** ** DEVELOPED BY ENVIRONMENTAL LABORATORY ** ** USAE WATERWAYS EXPERIMENT STATION ** FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ** ** ** ** ** PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\prj\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\pr]\lvsutton\tdchim\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\prl\lvsutton\tdchim\ASH25FT.D10 OUTPUT DATA FILE: c:\help\pr]\lvsutton\tdchim\ASH25FT.OUT TIME: 9:24 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 300.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2025 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0863 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.11 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.11 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2655 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. GROWING SEASON (JULIAN DATE) = SCS RUNOFF CURVE NUMBER = 96.70 END OF FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.612 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 66.199 INCHES TOTAL INITIAL WATER = 66.199 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 CHARLESTON START OF GROWING SEASON (JULIAN DATE) = 0 NORMAL MEAN MONTHLY END OF GROWING SEASON (JULIAN DATE) = 367 JAN/JUL ------- EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 2.75 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL ------- FEB/AUG MAR/SEP -------------- APR/OCT ------- MAY/NOV ------- JUN/DEC ------- 2.23 3.34 4.14 4.04 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES ?r?:?r?:?r?:?r?r?r?r?r?r?rk?: �?: �?:>r?r>rir>rkk k?r kirkkkkir>rk>rkkkkkkkkkkkisk isk isk isk kkkkkkkkkkkk?ck?ck?r ?: k?: k?: AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.349 1.203 1.660 1.766 1.298 1.972 2.700 6.070 1.556 1.009 1.796 1.394 STD. DEVIATIONS 0.496 0.866 1.130 1.460 1.207 1.550 1.910 3.244 1.369 1.251 1.423 1.102 EVAPOTRANSPIRATION ------------------ TOTALS 1.562 1.761 2.796 2.680 2.216 2.711 3.460 3.846 2.783 1.678 1.291 1.307 STD. DEVIATIONS 0.160 0.214 0.395 0.972 0.954 1.019 1.202 0.995 0.736 0.693 0.390 0.146 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0644 0.0571 0.0609 0.0475 0.0418 0.0456 0.0445 0.0408 0.0464 0.0612 0.0689 0.0708 STD. DEVIATIONS 0.0561 0.0539 0.0506 0.0382 0.0376 0.0345 0.0452 0.0488 0.0602 0.0722 0.0652 0.0576 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.1418 0.1246 0.1370 0.1179 0.1123 0.1227 0.1168 0.1067 0.1034 0.1236 0.1412 0.1511 STD. DEVIATIONS 0.0851 0.0836 0.0844 0.0757 0.0731 0.0633 0.0759 0.0766 0.0928 0.1051 0.0955 0.0853 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.1419 0.1250 0.1378 0.1183 0.1125 0.1223 0.1179 0.1072 0.1030 0.1213 0.1401 0.1511 STD. DEVIATIONS 0.0844 0.0836 0.0849 0.0755 0.0744 0.0623 0.0755 0.0761 0.0918 0.1047 0.0962 0.0863 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0021 0.0012 0.0018 0.0022 0.0016 0.0016 0.0015 0.0020 0.0018 0.0017 0.0015 0.0016 STD. DEVIATIONS 0.0030 0.0013 0.0021 0.0035 0.0021 0.0018 0.0017 0.0029 0.0025 0.0024 0.0016 0.0019 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0057 0.0055 0.0054 0.0043 0.0037 0.0042 RUNOFF 0.0039 0.0036 0.0042 0.0054 0.0063 0.0063 STD. DEVIATIONS 0.0050 0.0052 0.0045 0.0035 0.0033 0.0031 ( 0.0040 0.0043 0.0055 0.0064 0.0059 0.0051 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 1.49910 ( 0.78132) ------------------------------------- AVERAGES 0.0125 0.0121 0.0122 0.0108 0.0099 0.0112 0.0104 0.0095 0.0094 0.0107 0.0128 0.0134 STD. DEVIATIONS 0.0075 0.0081 0.0075 0.0069 0.0066 0.0057 1.49856 0.0067 0.0067 0.0084 0.0093 0.0088 0.0076 :r x :r x :r :; :r :t :; :t :; :t ;; r; s: r; s: r; s::; �; :; �; :; x s: r; s: r; s: r; s: �; �; �; �; �; �; i; :r t; x t; x :::r :::r :: x:r :r i; :r i; x i; ::• � :r � :r � :r :r:r :r:r :r x :; x :; x :r :r :r :r :r AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 22.772 ( 5.8563) 82660.59 42.487 EVAPOTRANSPIRATION 28.091 ( 2.6696) 101969.02 52.411 LATERAL DRAINAGE COLLECTED 0.64995 ( 0.45995) 2359.307 1.21267 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 1.49910 ( 0.78132) 5441.747 2.79703 LAYER 4 AVERAGE HEAD ON TOP 0.005 ( 0.003) OF LAYER 4 LATERAL DRAINAGE COLLECTED 1.49856 ( 0.78109) 5439.776 2.79601 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.012 0.00001 LAYER 7 AVERAGE HEAD ON TOP 0.011 ( 0.006) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02052 ( 0.02362) 74.473 0.03828 LAYER 8 CHANGE IN WATER STORAGE 0.565 ( 2.2275) 2051.54 1.054 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.314 15658.4082 DRAINAGE COLLECTED FROM LAYER 3 0.01241 45.05990 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.013328 48.38208 AVERAGE HEAD ON TOP OF LAYER 4 0.034 MAXIMUM HEAD ON TOP OF LAYER 4 0.067 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 6.4 FEET DRAINAGE COLLECTED FROM LAYER 5 0.01272 46.15864 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00005 AVERAGE HEAD ON TOP OF LAYER 6 0.035 MAXIMUM HEAD ON TOP OF LAYER 6 0.070 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000674 2.44670 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4047 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0470 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 74.8344 0.2494 2 5.5309 0.2305 3 0.0116 0.0386 4 0.0000 0.0000 5 0.0182 0.0910 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5712 0.2143 SNOW WATER 0.000 -------- - --- --- --------- -- ---------- - - - iri: it �k it �k it it is it it it it is is is is �k it is is is is is i:i:�ki:�ki:�ki: �k it �k it �k is it is it is it is xic is is is it �Y it �Y i:�Yi:i: �k �k �k �k �k �k is �k is �k is is �k*�k *�k it sk is is it it is is ** HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE ** ** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ** ** DEVELOPED BY ENVIRONMENTAL LABORATORY ** ** USAE WATERWAYS EXPERIMENT STATION ** ** FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ** ** ** it it it it it it �k i:ski:ski:i:ir*ir*ir it it it it it it it �k it �k it �k it �Y ie i:iti:it*it*it*it**ir �k it �k*it*it*it*i:it*it*it it it is it sY it sY ic*ic #ic is Y: is Y: PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\prj\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\tdchim\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pry\lvsutton\tdchim\ASH50FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\tdchim\ASH50FT.OUT TIME: 9:25 DATE: 11/25/2015 *,k*,k*,k*************�•*�•*�•********iso•iso.i;�.*****aaaa.,.:.�;;ki;;k::i:*********i; i; i; i; i;* * **i;*i; TITLE: L.V. Sutton Greenfield Landfill NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 600.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1947 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0863 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2655 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. 0.00 SCS RUNOFF CURVE NUMBER = 96.70 0 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.612 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 122.299 INCHES TOTAL INITIAL WATER = 122.299 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.349 1.203 1.660 1.766 1.298 1.972 2.700 6.070 1.556 1.009 1.796 1.394 STD. DEVIATIONS 0.496 0.866 1.130 1.460 1.207 1.550 1.910 3.244 1.369 1.251 1.423 1.102 EVAPOTRANSPIRATION ------------------ TOTALS 1.562 1.761 2.796 2.680 2.216 2.711 3.460 3.846 2.783 1.678 1.291 1.307 STD. DEVIATIONS 0.160 0.214 0.395 0.972 0.954 1.019 1.202 0.995 0.736 0.693 0.390 0.146 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0413 0.0410 0.0429 0.0323 0.0272 0.0275 0.0278 0.0266 0.0252 0.0299 0.0396 0.0446 STD. DEVIATIONS 0.0461 0.0485 0.0490 0.0395 0.0331 0.0316 0.0287 0.0325 0.0374 0.0449 0.0520 0.0536 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.1025 0.0965 0.1023 0.0854 0.0830 0.0844 0.0897 0.0862 0.0731 0.0786 0.0910 0.1023 STD. DEVIATIONS 0.0848 0.0844 0.0896 0.0796 0.0697 0.0685 0.0644 0.0652 0.0722 0.0809 0.0931 0.0927 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.1019 0.0970 0.1026 0.0863 0.0834 0.0841 0.0895 0.0869 0.0739 0.0772 0.0902 0.1016 STD. DEVIATIONS 0.0845 0.0841 0.0903 0.0796 0.0705 0.0685 0.0647 0.0649 0.0713 0.0796 0.0924 0.0934 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0023 0.0014 0.0018 0.0017 0.0014 0.0015 0.0017 0.0017 0.0017 0.0018 0.0015 0.0015 STD. DEVIATIONS 0.0029 0.0016 0.0021 0.0033 0.0017 0.0014 0.0019 0.0028 0.0025 0.0023 0.0018 0.0018 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0037 0.0040 0.0038 0.0030 0.0024 0.0025 RUNOFF 0.0025 0.0024 0.0023 0.0027 0.0037 0.0040 STD. DEVIATIONS 0.0041 0.0048 0.0044 0.0037 0.0030 0.0029 ( 0.0026 0.0029 0.0035 0.0040 0.0048 0.0048 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 1.07511 ( 0.80134) ------------------------------------- AVERAGES 0.0091 0.0095 0.0092 0.0080 0.0075 0.0078 0.0080 0.0078 0.0068 0.0069 0.0084 0.0091 STD. DEVIATIONS 0.0076 0.0083 0.0081 0.0074 0.0063 0.0063 1.07453 0.0058 0.0058 0.0066 0.0071 0.0086 0.0084 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 22.772 ( 5.8563) 82660.59 42.487 EVAPOTRANSPIRATION 28.091 ( 2.6696) 101969.02 52.411 LATERAL DRAINAGE COLLECTED 0.40605 ( 0.39862) 1473.944 0.75760 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 1.07511 ( 0.80134) 3902.631 2.00593 LAYER 4 AVERAGE HEAD ON TOP 0.003 ( 0.003) OF LAYER 4 LATERAL DRAINAGE COLLECTED 1.07453 ( 0.80090) 3900.535 2.00485 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.010 0.00001 LAYER 7 AVERAGE HEAD ON TOP 0.008 ( 0.006) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02018 ( 0.02074) 73.240 0.03764 LAYER 8 CHANGE IN WATER STORAGE 1.233 ( ................ 2.1692) 4477.38 2.301 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.314 15658.4082 DRAINAGE COLLECTED FROM LAYER 3 0.00913 33.13732 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.011488 41.70259 AVERAGE HEAD ON TOP OF LAYER 4 0.025 MAXIMUM HEAD ON TOP OF LAYER 4 0.051 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 0.5 FEET DRAINAGE COLLECTED FROM LAYER 5 0.01082 39.28347 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00005 AVERAGE HEAD ON TOP OF LAYER 6 0.030 MAXIMUM HEAD ON TOP OF LAYER 6 0.059 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 8.9 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000674 2.44670 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4047 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0470 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 150.9179 0.2515 2 5.5836 0.2327 3 0.0124 0.0412 4 0.0000 0.0000 5 0.0192 0.0962 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5813 0.2151 SNOW WATER 0.000 -------- - --- --- --------- -- ---------- - - - ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r,.x..x>;?ririr?csYi:s.>.s.>. sY icic is is is is is i:xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?: sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?;kirk irk it?r?;?r?;?rkkkkkkkkskk skkkkkkkkkki;ki;ki;kkkkkkkkkk?r 9r ?r irkkkkkkk?rk?rkkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\tdchim\EVAPINT.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\tdchim\INT50FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\tdchim\INT50FT.OUT TIME: 9:25 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkk ksY s'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 12.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.3925 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 600.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2224 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0861 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 5 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS POROSITY FIELD CAPACITY WILTING POINT INITIAL SOIL WATER CONTENT EFFECTIVE SAT. HYD. COND. FML PINHOLE DENSITY FML INSTALLATION DEFECTS FML PLACEMENT QUALITY = 0.06 INCHES = 0.0000 VOL/VOL 0.0000 VOL/VOL 0.0000 VOL/VOL = 0.0000 VOL/VOL = 0.199999996000E-12 CM/SEC 2.00 HOLES/ACRE = 2.00 HOLES/ACRE = 3 - GOOD LAYER 8 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 9 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2656 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A POOR STAND OF GRASS, A SURFACE SLOPE OF S.% AND A SLOPE LENGTH OF 1000. FEET. MAXIMUM LEAF AREA INDEX = SCS RUNOFF CURVE NUMBER = 71.90 START OF GROWING SEASON (JULIAN DATE) = FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 4.098 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 143.622 INCHES TOTAL INITIAL WATER = 143.622 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- ------- 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING 6.58 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 -------------- 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.017 0.091 0.172 0.256 0.171 0.237 0.343 1.913 0.246 0.173 0.333 0.173 STD. DEVIATIONS 0.078 0.180 0.258 0.582 0.393 0.426 0.657 1.627 0.561 0.437 0.581 0.239 EVAPOTRANSPIRATION ------------------ TOTALS 1.376 1.722 2.710 3.041 2.985 3.567 4.252 4.480 3.004 1.688 1.176 1.201 STD. DEVIATIONS 0.225 0.229 0.345 0.825 1.096 1.215 1.181 0.746 0.632 0.664 0.351 0.117 LATERAL DRAINAGE COLLECTED FROM LAYER 4 ---------------------------------------- TOTALS 0.7783 0.7786 0.9312 0.7200 0.7081 0.9040 1.0597 0.8830 0.6188 0.5957 0.9171 0.8817 STD. DEVIATIONS 0.4331 0.5568 0.5425 0.4809 0.4758 0.4955 0.5005 0.4563 0.3574 0.4532 0.6039 0.4314 PERCOLATION/LEAKAGE THROUGH LAYER 5 ------------------------------------ TOTALS 0.5327 0.5005 0.5965 0.5027 0.5038 0.5816 0.6540 0.5885 0.4751 0.4407 0.5684 0.5835 STD. DEVIATIONS 0.2252 0.2440 0.2375 0.2212 0.2326 0.2270 0.2330 0.2206 0.1823 0.2155 0.2687 0.2064 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.5339 0.4908 0.6038 0.5107 0.4985 0.5718 0.6557 0.5928 0.4865 0.4303 0.5660 0.5865 STD. DEVIATIONS 0.2226 0.2405 0.2400 0.2167 0.2265 0.2304 0.0835 0.2323 0.2222 0.1863 0.2055 0.2713 0.2059 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.0486 0.0445 0.0426 0.0459 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0215 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 9 CU. FEET PERCENT PRECIPITATION ------------------------------------ TOTALS 0.0018 0.0014 0.0020 0.0019 0.0020 0.0018 14972.28 0.0018 0.0018 0.0017 0.0017 0.0015 0.0015 STD. DEVIATIONS 0.0028 0.0017 0.0030 0.0031 0.0031 0.0025 0.0026 0.0025 0.0023 0.0022 0.0017 0.0019 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 5 ------------------------------------- AVERAGES 0.0697 0.0767 0.0835 0.0667 0.0635 0.0837 0.0950 0.0791 0.0573 0.0534 0.0849 0.0790 STD. DEVIATIONS 0.0388 0.0550 0.0486 0.0445 0.0426 0.0459 0.0449 0.0409 0.0331 0.0406 0.0559 0.0387 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0479 0.0483 0.0541 0.0473 0.0447 0.0530 0.0588 0.0531 0.0451 0.0386 0.0524 0.0526 STD. DEVIATIONS 0.0200 0.0238 0.0215 0.0201 0.0203 0.0213 0.0208 0.0199 0.0173 0.0184 0.0251 0.0185 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 4.125 ( 2.3474) 14972.28 7.696 EVAPOTRANSPIRATION 31.203 ( 2.8525) 113267.80 58.219 LATERAL DRAINAGE COLLECTED 9.77632 ( 4.13652) 35488.043 18.24065 FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH LAYER 5 AVERAGE HEAD ON TOP OF LAYER 5 LATERAL DRAINAGE COLLECTED FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH LAYER 8 AVERAGE HEAD ON TOP OF LAYER 7 PERCOLATION/LEAKAGE THROUGH LAYER 9 CHANGE IN WATER STORAGE 6.52789 ( 2.15089) 23696.252 12.17974 0.074 ( 0.032) 6.52732 ( 2.15195) 23694.168 12.17867 0.00001 ( 0.00000) 0.022 0.00001 0.050 ( 0.016) 0.02075 ( 0.02805) 1.944 ( 8.4732) 75.338 0.03872 7057.07 3.627 'r ?: 'r :�: :�:•-?c?c?c?c?c:Y?r:Y?r:Y?r>cic>cic>c?c?c?c?c?c?c?c?cic,.x..x>cir;rir;rir;rs.>.s.>.s..c...c...c...c..xs.xs. xi: it ?c it ?c it ?c ?r .r x .r x?: k?: k?: PEAK DAILY VALUES FOR YEARS ---------------------------------------- PRECIPITATION RUNOFF DRAINAGE COLLECTED FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH LAYER 5 AVERAGE HEAD ON TOP OF LAYER 5 MAXIMUM HEAD ON TOP OF LAYER 5 LOCATION OF MAXIMUM HEAD IN LAYER 4 (DISTANCE FROM DRAIN) DRAINAGE COLLECTED FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH LAYER 8 AVERAGE HEAD ON TOP OF LAYER 7 MAXIMUM HEAD ON TOP OF LAYER 7 LOCATION OF MAXIMUM HEAD IN LAYER 6 (DISTANCE FROM DRAIN) PERCOLATION/LEAKAGE THROUGH LAYER 9 SNOW WATER MAXIMUM VEG. SOIL WATER (VOL/VOL) MINIMUM VEG. SOIL WATER (VOL/VOL) 1 THROUGH 30 ------------------------------- (INCHES) (CU. FT.) 5.25 19057.500 3.291 11946.0518 0.10339 375.31113 0.039853 144.66472 0.287 6.2596 0.561 4 9.3 FEET 0.03747 136.00629 0.000000 0.00011 0.104 0.206 3.5 FEET 0.000677 2.45579 1.16 4211.9434 0.4570 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. .. .. .. .. .. .. .. �sY sk sY sk sY :'. .r .. .r .. .r .. .. .. .. .. ., kXkXkXkX?............................................. .. .. .. .. .. .. .. .. s'r sY s'r sY s'r sY .. .. .. .. .. s. .. ........ .. . . .......... ............................................... .............. . . . . . . . ... ... . ........ .. ... ............. . ... ............... . ... ... . . FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- 1 -------- 3.8424 --------- 0.3202 2 189.0450 0.3151 3 6.2596 0.2608 4 0.0262 0.0874 5 0.0000 0.0000 6 0.0190 0.0952 7 0.0000 0.0000 8 0.1875 0.7500 9 2.5648 0.2137 SNOW WATER 0.000 iri: it �k it �k it it is it is it is �k it �Y*�Y*ic is is is is is �k �k is �k �k is �k is is is is it is it is it is it is*****ic is is is is is is is*****�k is Yr is Yr is it*****i: is is is it it is is ** HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE ** ** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ** ** DEVELOPED BY ENVIRONMENTAL LABORATORY ** ** USAE WATERWAYS EXPERIMENT STATION ** ** FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ** ** ** itiritiritir�ki:iti:iti:stir*ir*iritititi:�kitir�kir�kir�kit�Yiti:iti:it*YtYt�YYt�YYt*�k�k�k�kYtitYtitYtitYti:�k*�k*�kirYti:YtsYYtsYft*ft#ftitY:i:Y: PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\prj\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\tdchim\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pry\lvsutton\tdchim\ASH70FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\tdchim\ASH70FT.OUT TIME: 9:25 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 840.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1925 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0863 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2657 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. 0.00 SCS RUNOFF CURVE NUMBER = 96.70 0 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.612 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 167.181 INCHES TOTAL INITIAL WATER = 167.181 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- 3AN/3UL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.349 1.203 1.660 1.766 1.298 1.972 2.700 6.070 1.556 1.009 1.796 1.394 STD. DEVIATIONS 0.496 0.866 1.130 1.460 1.207 1.550 1.910 3.244 1.369 1.251 1.423 1.102 EVAPOTRANSPIRATION ------------------ TOTALS 1.562 1.761 2.796 2.680 2.216 2.711 3.460 3.846 2.783 1.678 1.291 1.307 STD. DEVIATIONS 0.160 0.214 0.395 0.972 0.954 1.019 1.202 0.995 0.736 0.693 0.390 0.146 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0216 0.0255 0.0302 0.0234 0.0178 0.0172 0.0175 0.0150 0.0142 0.0150 0.0216 0.0276 STD. DEVIATIONS 0.0314 0.0331 0.0397 0.0332 0.0289 0.0244 0.0226 0.0212 0.0212 0.0259 0.0366 0.0427 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0669 0.0712 0.0791 0.0676 0.0602 0.0619 0.0646 0.0601 0.0570 0.0534 0.0624 0.0706 STD. DEVIATIONS 0.0667 0.0712 0.0824 0.0723 0.0646 0.0597 0.0599 0.0542 0.0507 0.0586 0.0723 0.0820 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0663 0.0706 0.0795 0.0683 0.0609 0.0614 0.0646 0.0606 0.0573 0.0529 0.0619 0.0702 STD. DEVIATIONS 0.0671 0.0700 0.0829 0.0723 0.0657 0.0595 0.0601 0.0549 0.0502 0.0581 0.0709 0.0821 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0022 0.0015 0.0019 0.0017 0.0013 0.0013 0.0016 0.0018 0.0019 0.0018 0.0016 0.0015 STD. DEVIATIONS 0.0027 0.0017 0.0021 0.0033 0.0018 0.0013 0.0018 0.0029 0.0026 0.0021 0.0017 0.0016 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0019 0.0025 0.0027 0.0022 0.0016 0.0016 RUNOFF 0.0016 0.0013 0.0013 0.0013 0.0020 0.0025 STD. DEVIATIONS 0.0028 0.0033 0.0036 0.0031 0.0026 0.0023 ( 0.0020 0.0019 0.0020 0.0023 0.0034 0.0038 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.77502 ( 0.67353) ------------------------------------- AVERAGES 0.0059 0.0069 0.0071 0.0063 0.0055 0.0057 0.0058 0.0054 0.0053 0.0047 0.0057 0.0063 STD. DEVIATIONS 0.0060 0.0069 0.0074 0.0067 0.0059 0.0055 0.77449 0.0054 0.0049 0.0046 0.0052 0.0066 0.0074 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 22.772 ( 5.8563) 82660.59 42.487 EVAPOTRANSPIRATION 28.091 ( 2.6696) 101969.02 52.411 LATERAL DRAINAGE COLLECTED 0.24644 ( 0.28885) 894.563 0.45980 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 0.77502 ( 0.67353) 2813.318 1.44603 LAYER 4 AVERAGE HEAD ON TOP 0.002 ( 0.002) OF LAYER 4 LATERAL DRAINAGE COLLECTED 0.77449 ( 0.67310) 2811.386 1.44504 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.010 0.00000 LAYER 7 AVERAGE HEAD ON TOP 0.006 ( 0.005) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02021 ( 0.02082) 73.359 0.03771 LAYER 8 CHANGE IN WATER STORAGE 1.693 ( ................ 2.0156) 6145.79 3.159 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION ---------- ------------- 5.25 19057.500 RUNOFF 4.314 15658.4082 DRAINAGE COLLECTED FROM LAYER 3 0.00711 25.81525 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.010124 36.75173 AVERAGE HEAD ON TOP OF LAYER 4 0.020 MAXIMUM HEAD ON TOP OF LAYER 4 0.039 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 5.3 FEET DRAINAGE COLLECTED FROM LAYER 5 0.00946 34.33700 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00004 AVERAGE HEAD ON TOP OF LAYER 6 0.026 MAXIMUM HEAD ON TOP OF LAYER 6 0.053 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000682 2.47417 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4047 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0470 * Maximum heads are computed using MCEnroe's equations. Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------- --------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 209.6458 0.2496 2 5.5279 0.2303 3 0.0111 0.0370 4 0.0000 0.0000 5 0.0179 0.0894 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5824 0.2152 SNOW WATER 0.000 t•�t•�t•�ttitit*���r�r**�*�;r:r:rrr������:rr:rr:rrxxxxx::;::r;r;;*,r *,r�,rrrrrxrr,•.-r,•.-r rx rx ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r,.x..x>;?ririr?csYics.>.s.>. sY icic is is is is is it xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?:k x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ksk .r .r .r .r .r .r .r sr s, xs, x?;kirk irk ir?r?;?r?;?rkkkkkkk9rkkkkkir?rk?rk?rk kkkkk?rir?rir?rir?r?r?;?r?;?r?; ?r irk irk irk sk irk it skkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\tdchim\EVAPINT.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\tdchim\INT70FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\tdchim\INT70FT.OUT TIME: 9:26 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkk ksY s'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 12.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.3925 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 840.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2123 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0858 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 5 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS POROSITY FIELD CAPACITY WILTING POINT INITIAL SOIL WATER CONTENT EFFECTIVE SAT. HYD. COND. FML PINHOLE DENSITY FML INSTALLATION DEFECTS FML PLACEMENT QUALITY = 0.06 INCHES = 0.0000 VOL/VOL 0.0000 VOL/VOL 0.0000 VOL/VOL = 0.0000 VOL/VOL = 0.199999996000E-12 CM/SEC = 2.00 HOLES/ACRE = 2.00 HOLES/ACRE = 3 - GOOD LAYER 8 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 9 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2662 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A POOR STAND OF GRASS, A SURFACE SLOPE OF S.% AND A SLOPE LENGTH OF 1000. FEET. MAXIMUM LEAF AREA INDEX = SCS RUNOFF CURVE NUMBER = 71.90 START OF GROWING SEASON (JULIAN DATE) = FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 4.098 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 188.509 INCHES TOTAL INITIAL WATER = 188.509 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- ------- 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING 6.58 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 -------------- 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.017 0.091 0.172 0.256 0.171 0.237 0.343 1.913 0.246 0.173 0.333 0.173 STD. DEVIATIONS 0.078 0.180 0.258 0.582 0.393 0.426 0.657 1.627 0.561 0.437 0.581 0.239 EVAPOTRANSPIRATION ------------------ TOTALS 1.376 1.722 2.710 3.041 2.985 3.567 4.252 4.480 3.004 1.688 1.176 1.201 STD. DEVIATIONS 0.225 0.229 0.345 0.825 1.096 1.215 1.181 0.746 0.632 0.664 0.351 0.117 LATERAL DRAINAGE COLLECTED FROM LAYER 4 ---------------------------------------- TOTALS 0.7062 0.6949 0.8757 0.6650 0.6552 0.8408 1.0113 0.8366 0.6215 0.5260 0.8507 0.8029 STD. DEVIATIONS 0.4331 0.5607 0.5654 0.4545 0.4664 0.5367 0.5562 0.4932 0.3841 0.4401 0.5951 0.4595 PERCOLATION/LEAKAGE THROUGH LAYER 5 ------------------------------------ TOTALS 0.4958 0.4531 0.5637 0.4736 0.4758 0.5432 0.6221 0.5595 0.4698 0.4037 0.5393 0.5428 STD. DEVIATIONS 0.2373 0.2650 0.2660 0.2318 0.2386 0.2617 0.2720 0.2485 0.2048 0.2248 0.2772 0.2311 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.4976 0.4440 0.5700 0.4825 0.4692 0.5346 0.6231 0.5622 0.4807 0.3991 0.5334 0.5452 STD. DEVIATIONS 0.2368 0.2601 0.2689 0.2274 0.2348 0.2619 0.0785 0.2714 0.2519 0.2083 0.2150 0.2769 0.2315 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.0507 0.0421 0.0418 0.0497 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0241 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 9 CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( ------------------------------------ TOTALS 0.0021 0.0013 0.0021 0.0020 0.0021 0.0017 7.696 0.0020 0.0018 0.0015 0.0016 0.0013 0.0016 STD. DEVIATIONS 0.0029 0.0014 0.0032 0.0028 0.0033 0.0019 0.0029 0.0026 0.0019 0.0023 0.0012 0.0021 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 5 ------------------------------------- AVERAGES 0.0633 0.0685 0.0785 0.0616 0.0587 0.0779 0.0906 0.0750 0.0576 0.0471 0.0788 0.0720 STD. DEVIATIONS 0.0388 0.0554 0.0507 0.0421 0.0418 0.0497 0.0498 0.0442 0.0356 0.0394 0.0551 0.0412 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0446 0.0437 0.0511 0.0447 0.0420 0.0495 0.0558 0.0504 0.0445 0.0358 0.0494 0.0489 STD. DEVIATIONS 0.0212 0.0257 0.0241 0.0211 0.0210 0.0242 0.0243 0.0226 0.0193 0.0193 0.0256 0.0207 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 4.125 ( 2.3474) 14972.28 7.696 EVAPOTRANSPIRATION 31.203 ( 2.8525) 113267.80 58.219 LATERAL DRAINAGE COLLECTED 9.08669 ( 4.48441) 32984.703 16.95395 FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH LAYER 5 AVERAGE HEAD ON TOP OF LAYER 5 LATERAL DRAINAGE COLLECTED FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH LAYER 8 AVERAGE HEAD ON TOP OF LAYER 7 PERCOLATION/LEAKAGE THROUGH LAYER 9 CHANGE IN WATER STORAGE 6.14239 ( 2.46696) 22296.867 11.46046 0.069 ( 0.034) 6.14173 ( 2.46819) 22294.463 11.45923 0.00001 ( 0.00000) 0.021 0.00001 0.047 ( 0.019) 0.02092 ( 0.02658) 3.019 ( 9.1725) 75.928 0.03903 10959.52 5.633 'r ?: 'r :�: :�:•-?c?c?c?c?c:Y?r:Y?r:Y?r>cic>cic>c?c?c?c?c?c?c?c?cic,.x..x>cir;rir;rir;rs.>.s.>.s..c...c...c...c..xs.xs.xi: it •max.. x.. sY ?c sY .. s. ,c sY -k sY -k PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 3.291 11946.0518 DRAINAGE COLLECTED FROM LAYER 4 0.09982 362.35092 PERCOLATION/LEAKAGE THROUGH LAYER 5 0.039130 142.04048 AVERAGE HEAD ON TOP OF LAYER 5 0.277 MAXIMUM HEAD ON TOP OF LAYER 5 0.541 LOCATION OF MAXIMUM HEAD IN LAYER 4 0.1067 (DISTANCE FROM DRAIN) 9.1 FEET DRAINAGE COLLECTED FROM LAYER 6 0.03614 131.18513 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000000 0.00011 AVERAGE HEAD ON TOP OF LAYER 7 0.100 MAXIMUM HEAD ON TOP OF LAYER 7 0.199 LOCATION OF MAXIMUM HEAD IN LAYER 6 0.7500 (DISTANCE FROM DRAIN) 4.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 9 0.000703 2.55042 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. ............:: sY?: sY?: sY?....................... ?r sY?c sY?r x?r x?........................................................................................... ....... ... .. .. ........................................................... .. .........-........... ............: ?: ?r sY?r sY?r ::...:...::: ?: ?: ?: ?: ?::..:...:...:..::?r?: ?r?r>•; ?::.........., s..r s.., s..................:...:.........:...:...:........., s..r s..r ....... ....... ....... .......... ............................. ... ... ....... .. .. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- 1 -------- 3.8424 --------- 0.3202 2 266.0594 0.3167 3 6.3733 0.2656 4 0.0320 0.1067 5 0.0000 0.0000 6 0.0217 0.1083 7 0.0000 0.0000 8 0.1875 0.7500 9 2.5668 0.2139 SNOW WATER 0.000 ****************************************************************************** ** ** ** HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE ** ** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ** ** DEVELOPED BY ENVIRONMENTAL LABORATORY ** ** USAE WATERWAYS EXPERIMENT STATION ** ** FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ** ** ** itiritiritir�ki:iti:iti:stir*ir*iritititi:�kitir�kir�kir�kit�Yiti:iti:it*YtYt�YYt�YYt*�k�k�k�kYtitYtitYtitYti:�k*�k*�kirYti:YtsYYtsYft*ft#ftitY:i:Y: PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\prj\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\tdchim\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pry\lvsutton\tdchim\ASH90FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\tdchim\ASH90FT.OUT TIME: 9:25 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 1080.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1913 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0863 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2654 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. 0.00 SCS RUNOFF CURVE NUMBER = 96.70 0 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.612 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 212.057 INCHES TOTAL INITIAL WATER = 212.057 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- 3AN/3UL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.349 1.203 1.660 1.766 1.298 1.972 2.700 6.070 1.556 1.009 1.796 1.394 STD. DEVIATIONS 0.496 0.866 1.130 1.460 1.207 1.550 1.910 3.244 1.369 1.251 1.423 1.102 EVAPOTRANSPIRATION ------------------ TOTALS 1.562 1.761 2.796 2.680 2.216 2.711 3.460 3.846 2.783 1.678 1.291 1.307 STD. DEVIATIONS 0.160 0.214 0.395 0.972 0.954 1.019 1.202 0.995 0.736 0.693 0.390 0.146 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0106 0.0114 0.0171 0.0155 0.0128 0.0110 0.0110 0.0105 0.0092 0.0064 0.0072 0.0135 STD. DEVIATIONS 0.0197 0.0185 0.0266 0.0237 0.0228 0.0199 0.0160 0.0134 0.0134 0.0124 0.0170 0.0254 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0415 0.0445 0.0566 0.0542 0.0480 0.0449 0.0498 0.0502 0.0458 0.0350 0.0352 0.0471 STD. DEVIATIONS 0.0520 0.0511 0.0664 0.0619 0.0596 0.0539 0.0511 0.0476 0.0437 0.0390 0.0418 0.0591 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0417 0.0435 0.0562 0.0544 0.0489 0.0446 0.0495 0.0505 0.0461 0.0359 0.0345 0.0466 STD. DEVIATIONS 0.0527 0.0501 0.0663 0.0616 0.0604 0.0539 0.0516 0.0477 0.0439 0.0398 0.0407 0.0583 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0022 0.0015 0.0018 0.0017 0.0014 0.0015 0.0016 0.0019 0.0019 0.0017 0.0014 0.0015 STD. DEVIATIONS 0.0028 0.0017 0.0021 0.0032 0.0018 0.0013 0.0018 0.0029 0.0026 0.0020 0.0017 0.0015 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0010 0.0012 0.0016 0.0015 0.0012 0.0011 RUNOFF 0.0010 0.0010 0.0009 0.0006 0.0007 0.0013 STD. DEVIATIONS 0.0018 0.0019 0.0025 0.0023 0.0021 0.0019 ( 0.0015 0.0013 0.0013 0.0012 0.0016 0.0024 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.55283 ( 0.53159) ------------------------------------- AVERAGES 0.0039 0.0045 0.0052 0.0052 0.0046 0.0043 0.0046 0.0047 0.0044 0.0033 0.0033 0.0043 STD. DEVIATIONS 0.0049 0.0052 0.0062 0.0059 0.0056 0.0052 0.55240 0.0048 0.0044 0.0042 0.0037 0.0039 0.0054 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 22.772 ( 5.8563) 82660.59 42.487 EVAPOTRANSPIRATION 28.091 ( 2.6696) 101969.02 52.411 LATERAL DRAINAGE COLLECTED 0.13624 ( 0.17972) 494.563 0.25420 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 0.55283 ( 0.53159) 2006.755 1.03146 LAYER 4 AVERAGE HEAD ON TOP 0.001 ( 0.001) OF LAYER 4 LATERAL DRAINAGE COLLECTED 0.55240 ( 0.53169) 2005.201 1.03066 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.009 0.00000 LAYER 7 AVERAGE HEAD ON TOP 0.004 ( 0.004) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02012 ( 0.02027) 73.032 0.03754 LAYER 8 CHANGE IN WATER STORAGE 2.025 ( ................ 1.9042) 7352.30 3.779 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.314 15658.4082 DRAINAGE COLLECTED FROM LAYER 3 0.00588 21.35791 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.009375 34.03160 AVERAGE HEAD ON TOP OF LAYER 4 0.017 MAXIMUM HEAD ON TOP OF LAYER 4 0.032 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 18.2 FEET DRAINAGE COLLECTED FROM LAYER 5 0.00881 31.98040 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00004 AVERAGE HEAD ON TOP OF LAYER 6 0.025 MAXIMUM HEAD ON TOP OF LAYER 6 0.052 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000669 2.42871 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4047 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0470 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. .............. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 264.6504 0.2450 2 5.3777 0.2241 3 0.0082 0.0274 4 0.0000 0.0000 5 0.0148 0.0739 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5817 0.2151 SNOW WATER 0.000 -------- - --- --- --------- -- ---------- - - - ** HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE ** ** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ** ** DEVELOPED BY ENVIRONMENTAL LABORATORY ** ** USAE WATERWAYS EXPERIMENT STATION ** FOR USEPA RISK REDUCTION ENGINEERING LABORATORY ** ** ** ** PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\prj\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\pr]\lvsutton\tdchim\EVAPINT.D11 SOIL AND DESIGN DATA FILE: c:\help\prl\lvsutton\tdchim\INT90FT.D10 OUTPUT DATA FILE: c:\help\pr]\lvsutton\tdchim\INT90FT.OUT TIME: 9:26 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 12.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.3925 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 1080.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2067 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0856 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 5 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEG FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 8 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 9 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2666 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A POOR STAND OF GRASS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 1000. FEET. START OF SCS RUNOFF CURVE NUMBER = 71.90 FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 4.098 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 233.394 INCHES TOTAL INITIAL WATER = 233.394 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING ------------- TOTALS COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 ------- 71.80 ------- 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY ------------------------------------------------------------------------------- VALUES IN INCHES FOR YEARS 1 THROUGH 30 JAN/JUL ------- FEB/AUG ------- MAR/SEP ------- APR/OCT ------- MAY/NOV ------- JUN/DEC ------- PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.017 0.091 0.172 0.256 0.171 0.237 0.343 1.913 0.246 0.173 0.333 0.173 STD. DEVIATIONS 0.078 0.180 0.258 0.582 0.393 0.426 0.657 1.627 0.561 0.437 0.581 0.239 EVAPOTRANSPIRATION ------------------ TOTALS 1.376 1.722 2.710 3.041 2.985 3.567 4.252 4.480 3.004 1.688 1.176 1.201 STD. DEVIATIONS 0.225 0.229 0.345 0.825 1.096 1.215 1.181 0.746 0.632 0.664 0.351 0.117 LATERAL DRAINAGE COLLECTED FROM LAYER 4 ---------------------------------------- TOTALS 0.6448 0.6330 0.7671 0.5999 0.6081 0.7636 0.9527 0.7844 0.5751 0.4855 0.7599 0.7261 STD. DEVIATIONS 0.4331 0.5592 0.5890 0.4239 0.4407 0.5575 0.5634 0.5119 0.4179 0.4309 0.5917 0.4791 PERCOLATION/LEAKAGE THROUGH LAYER 5 ------------------------------------ TOTALS 0.4758 0.4288 0.5174 0.4520 0.4645 0.5114 0.6068 0.5382 0.4451 0.3897 0.5005 0.5082 STD. DEVIATIONS 0.2454 0.2790 0.2915 0.2339 0.2406 0.2887 0.2905 0.2794 0.2356 0.2356 0.3003 0.2628 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.4753 0.4237 0.5210 0.4599 0.4571 0.5047 0.6054 0.5441 0.4538 0.3878 0.4913 0.5131 STD. DEVIATIONS 0.2468 0.2707 ------------------------------------------------------------------------------- 0.2909 0.2801 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0000 0.0000 0.0567 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0452 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 9 ------------------------------------ TOTALS 0.0020 0.0013 0.0537 0.0020 0.0019 STD. DEVIATIONS 0.0027 0.0015 0.0570 0.0030 0.0028 0.2969 0.2316 0.2380 0.2863 0.2408 0.2256 0.2987 0.2624 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0020 0.0019 0.0020 0.0017 0.0016 0.0017 0.0013 0.0017 0.0031 0.0028 0.0034 0.0020 0.0020 0.0022 0.0012 0.0023 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 5 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0601 0.0649 0.0715 0.0578 0.0567 0.0735 RUNOFF 0.0888 0.0731 0.0554 0.0452 0.0732 0.0677 STD. DEVIATIONS 0.0404 0.0574 0.0549 0.0408 0.0411 0.0537 ( 0.0525 0.0477 0.0402 0.0402 0.0570 0.0447 DAILY AVERAGE HEAD ON TOP OF LAYER 7 PERCOLATION/LEAKAGE THROUGH 5.83829 ( 2.75765) ------------------------------------- AVERAGES 0.0443 0.0434 0.0486 0.0443 0.0426 0.0486 0.0564 0.0507 0.0437 0.0361 0.0473 0.0478 STD. DEVIATIONS 0.0230 0.0278 0.0277 0.0223 0.0222 0.0276 5.83749 0.0271 0.0261 0.0232 0.0210 0.0288 0.0245 ....... . ......... ............................................................ ......................... AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 4.125 ( 2.3474) 14972.28 7.696 EVAPOTRANSPIRATION 31.203 ( 2.8525) 113267.80 58.219 LATERAL DRAINAGE COLLECTED 8.30041 ( 4.73350) 30130.500 15.48691 FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH 5.83829 ( 2.75765) 21192.984 10.89307 LAYER 5 AVERAGE HEAD ON TOP 0.066 ( 0.038) OF LAYER 5 LATERAL DRAINAGE COLLECTED 5.83749 ( 2.75867) 21190.074 10.89158 FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.00001 ( 0.00000) 0.021 0.00001 LAYER 8 AVERAGE HEAD ON TOP 0.046 ( 0.022) OF LAYER 7 PERCOLATION/LEAKAGE THROUGH 0.02107 ( 0.02715) 76.485 0.03931 LAYER 9 CHANGE IN WATER STORAGE 4.110 ( 9.6156) 14917.56 7.668 sY::sY::sY:: sY xsk xsk xic is is is is is is i; xi; xi; i:i:i:i:i:i:i:i:icskskskk>;•sY it sY it sY i:::sY::sY::iri:iri:iri:iri:xxxx.. .c .. .. :: k:: kic .c xsk it •�xs. xs. PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 3.291 11946.0518 DRAINAGE COLLECTED FROM LAYER 4 0.09577 347.65729 PERCOLATION/LEAKAGE THROUGH LAYER 5 0.039085 141.87756 AVERAGE HEAD ON TOP OF LAYER 5 0.277 MAXIMUM HEAD ON TOP OF LAYER 5 0.540 LOCATION OF MAXIMUM HEAD IN LAYER 4 (DISTANCE FROM DRAIN) 9.4 FEET DRAINAGE COLLECTED FROM LAYER 6 0.03592 130.37453 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000000 0.00011 AVERAGE HEAD ON TOP OF LAYER 7 0.104 MAXIMUM HEAD ON TOP OF LAYER 7 0.205 LOCATION OF MAXIMUM HEAD IN LAYER 6 (DISTANCE FROM DRAIN) 4.7 FEET PERCOLATION/LEAKAGE THROUGH LAYER 9 0.000722 2.62094 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. .'• .'• .'• .'• .'• .'• .'• is i; is i; sk i; it i; it i; it i; i; i; i; i; i; � :'r � it � it is sY sk it sk it sk it sY sY sY i; is i; i; i; � sY sY sY i; sY i; it i; k sY X sY X sY X i, i, i, i, i, s'r sY s'r sY .............. ................................ FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 3.8424 0.3202 2 343.5601 0.3181 3 6.4572 0.2691 4 0.0389 0.1297 5 0.0000 0.0000 6 0.0259 0.1294 7 0.0000 0.0000 8 0.1875 0.7500 9 2.5672 0.2139 SNOW WATER 0.000 ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r,.x..x>;?ririr?csYics.>.s.>. sY icic is is is is is it xs.xs.x:: ?r ?c ?r .. x.. sk ?c sk .. s. ,r sY -k sY x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY kk .r .r .r .r .r .r .r sr s, xs, x?;kirk irk ir?r?;?r?;?rkkkkkkk9rkkkkkir?rk?rk?rk kkkkk?rir?rir?rir?r?r?;?r?;?r?; ?r irk irk irk sk irk it skkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\tdchim\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\tdchim\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\tdchim\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\tdchim\EVAPFC.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\tdchim\ASH90F-1.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\tdchim\ASH90F-1.OUT TIME: 9:25 DATE: 11/25/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkkkks'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.4570 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.04 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 6.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1992 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 1080.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1870 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 5 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0832 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 8 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 9 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD UPPER LIMIT OF EVAPORATIVE STORAGE LAYER 10 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 11 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2900 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A FAIR STAND OF GRASS, A SURFACE SLOPE OF 5.% AND A SLOPE LENGTH OF 180. FEET. SCS RUNOFF CURVE NUMBER = 60.20 FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 4.570 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 219.828 INCHES TOTAL INITIAL WATER = 219.828 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM SYNTHETICALLY Wilmington North Carolina USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 2.00 FEB/AUG MAR/SEP -------------- START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP -------------- EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 6.58 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 2.52 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA FEB/AUG MAR/SEP -------------- NORMAL MEAN MONTHLY PRECIPITATION (INCHES) 49.10 54.30 JAN/JUL ------- FEB/AUG MAR/SEP -------------- APR/OCT ------- MAY/NOV ------- JUN/DEC ------- 2.23 3.34 4.14 4.04 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING INCHES COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL ------- FEB/AUG MAR/SEP -------------- APR/OCT ------- MAY/NOV JUN/DEC -------------- 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING 1.64 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA 3.54 AND STATION LATITUDE = 34.30 DEGREES -- -- --- --- - -- -- AVERAGE MONTHLY ------------------------------------------------------------------------------- VALUES IN INCHES FOR YEARS 1 THROUGH 30 3AN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.499 1.467 1.880 1.155 0.374 0.393 0.829 4.514 0.880 0.665 1.406 1.848 STD. DEVIATIONS 0.973 1.422 1.677 1.629 0.902 0.759 22.6612 1.824 4.033 1.423 1.471 1.786 1.784 EVAPOTRANSPIRATION 19.4145 19.7114 19.0286 20.6141 22.5060 STD. DEVIATIONS ------------------ TOTALS 1.385 1.786 2.969 4.003 4.299 4.245 2.7577 4.782 4.896 3.662 2.037 1.260 1.212 STD. DEVIATIONS 0.219 0.191 0.233 0.346 1.149 1.208 0.0000 1.191 0.698 0.314 0.543 0.333 0.113 PERCOLATION/LEAKAGE THROUGH LAYER 2 0.0000 0.0000 0.0000 ------------------------------------ TOTALS 0.1100 0.0997 0.1088 0.0970 0.0844 0.0764 0.0833 0.0959 0.0941 0.0942 0.0978 0.1093 STD. DEVIATIONS 0.0030 0.0034 0.0028 0.0067 0.0104 0.0090 0.0120 0.0132 0.0087 0.0116 0.0104 0.0076 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0002 STD. DEVIATIONS 0.0000 0.0001 0.0001 0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0009 0.0010 LATERAL DRAINAGE COLLECTED FROM LAYER 8 ---------------------------------------- TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0002 STD. DEVIATIONS 0.0000 0.0001 0.0001 0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0009 0.0009 PERCOLATION/LEAKAGE THROUGH LAYER 10 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 11 ------------------------------------ TOTALS 0.0026 0.0030 0.0020 0.0029 0.0013 0.0001 0.0004 0.0016 0.0045 0.0036 0.0012 0.0012 STD. DEVIATIONS 0.0053 0.0069 0.0046 0.0126 0.0047 0.0005 0.0007 0.0027 0.0063 0.0061 0.0020 0.0019 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 2 ------------------------------------- AVERAGES 22.6612 22.5406 22.3964 20.4151 16.7531 15.5074 16.5210 19.4145 19.7114 19.0286 20.6141 22.5060 STD. DEVIATIONS 0.6835 0.8127 0.6586 1.6081 2.3843 2.1517 2.7577 3.0419 2.0683 2.6703 2.4678 1.7620 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 DAILY AVERAGE HEAD ON TOP OF LAYER 9 PERCOLATION/LEAKAGE THROUGH ------------------------------------- AVERAGES 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 .r .c .r .c .r .c .r sr s, sr s, xi; kir kirk sr it i; it i; it 0.0000 itkkkkkkkskk skk 0.0000 skkkkkkkk>'; 0.0000 0.0000 k>'; k>'; kkkkkkkkir it it it 0.0001 it itkkkkkk 0.0001 kir kic ki: kick is AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT ------------------- ------------- --------- PRECIPITATION 53.60 ( 9.125) 194554.7 100.00 RUNOFF 15.909 ( 7.8172) 57751.18 29.684 EVAPOTRANSPIRATION 36.536 ( 2.7453) 132625.44 68.169 PERCOLATION/LEAKAGE THROUGH 1.15098 ( 0.04183) 4178.065 2.14750 LAYER 2 AVERAGE HEAD ON TOP 19.839 ( 0.817) OF LAYER 2 LATERAL DRAINAGE COLLECTED 0.00002 ( 0.00009) 0.063 0.00003 FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.00058 ( 0.00198) 2.106 0.00108 LAYER 7 AVERAGE HEAD ON TOP 0.000 ( 0.000) OF LAYER 7 LATERAL DRAINAGE COLLECTED 0.00055 ( 0.00181) 1.988 0.00102 FROM LAYER 8 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.003 0.00000 LAYER 10 AVERAGE HEAD ON TOP 0.000 ( 0.000) OF LAYER 9 PERCOLATION/LEAKAGE THROUGH 0.02417 ( 0.02894) 87.752 0.04510 LAYER 11 CHANGE IN WATER STORAGE 1.126 ( ............................................................. ............:: k k is s; i::, ..............., ..., .....................................................r 0.4577) ................................................... ...r ...r ...r 4088.26 .............................................. 2.101 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ 2.05617 PERCOLATION/LEAKAGE THROUGH LAYER 10 (INCHES) (CU. FT.) PRECIPITATION 0.002 0.0000 5.25 19057.500 RUNOFF LOCATION OF MAXIMUM HEAD IN LAYER 8 234.4691 5.069 18399.8203 PERCOLATION/LEAKAGE THROUGH LAYER 2 0.003734 13.55547 AVERAGE HEAD ON TOP OF LAYER 2 24.000 0.0030 DRAINAGE COLLECTED FROM LAYER 6 0.00005 0.16824 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000823 2.98675 AVERAGE HEAD ON TOP OF LAYER 7 0.000 MAXIMUM HEAD ON TOP OF LAYER 7 0.000 LOCATION OF MAXIMUM HEAD IN LAYER 6 (DISTANCE FROM DRAIN) 0.0 FEET OF YEAR 30 DRAINAGE COLLECTED FROM LAYER 8 0.00057 2.05617 PERCOLATION/LEAKAGE THROUGH LAYER 10 0.000000 0.00003 AVERAGE HEAD ON TOP OF LAYER 9 0.002 0.0000 MAXIMUM HEAD ON TOP OF LAYER 9 0.003 0.2023 LOCATION OF MAXIMUM HEAD IN LAYER 8 234.4691 0.2171 (DISTANCE FROM DRAIN) 0.0 FEET 0.1673 PERCOLATION/LEAKAGE THROUGH LAYER 11 0.003073 11.15487 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) MINIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- 1 -------- 10.9679 --------- 0.4570 2 0.0000 0.0000 3 1.2140 0.2023 4 234.4691 0.2171 5 4.0156 0.1673 6 0.0030 0.0101 7 0.0000 0.0000 8 0.0030 0.0148 9 0.0000 0.0000 10 0.1875 0.7500 11 2.7547 0.2296 SNOW WATER 0.000 ?rkk:: :: •-?;?;?;?; ?:kk.`: •-ir>;irk?rX?r?r?r?r?r?r?r::?r::?r::sY?rir?rir?rs,s.s,s.?;?rsk?rsk?rsk?r sk xs.xxx>;-?r ?c ?r ?c ?r ?c ?r .r x .rx sk sk sk sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE kk HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) ?°'k DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k?° *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r.r.r.r.r.r.r sr s,xs,x?;k?rk irk it?r?;?r?;?rkkkkkkkkskk skkkkkkkkkk?rk?rk?rkkkkkkkkk?rk?rk?rkkkkkkk?rk?rkkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\ASH10FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\ASH10FT.OUT TIME: 16: 0 DATE: 8/ 4/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk?rk?rk :'rk i:k i:k i:kirk irk irk is is is is is kkkkkks'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 120.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2135 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0848 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.12 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.12 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2671 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 9. FEET. DEGREES SCS RUNOFF CURVE NUMBER = 97.50 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.481 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 31.048 INCHES TOTAL INITIAL WATER = 31.048 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.450 1.432 1.939 2.035 1.541 2.287 3.143 6.631 1.818 1.168 2.035 1.620 STD. DEVIATIONS 0.578 0.961 1.229 1.592 1.301 1.684 2.036 3.397 1.478 1.372 1.496 1.200 EVAPOTRANSPIRATION ------------------ TOTALS 1.540 1.716 2.681 2.421 1.932 2.424 3.055 3.592 2.529 1.523 1.224 1.278 STD. DEVIATIONS 0.197 0.240 0.420 0.924 0.865 0.904 1.126 1.015 0.728 0.675 0.405 0.165 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0267 0.0251 0.0308 0.0335 0.0301 0.0245 0.0244 0.0254 0.0285 0.0277 0.0255 0.0295 STD. DEVIATIONS 0.0294 0.0281 0.0310 0.0239 0.0219 0.0197 0.0172 0.0211 0.0337 0.0399 0.0384 0.0346 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0855 0.0811 0.0969 0.1050 0.1005 0.0868 0.0899 0.0926 0.0929 0.0837 0.0778 0.0903 STD. DEVIATIONS 0.0614 0.0547 0.0604 0.0529 0.0537 0.0522 0.0482 0.0469 0.0571 0.0702 0.0673 0.0673 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0850 0.0810 0.0958 0.1047 0.1014 0.0874 0.0897 0.0922 0.0933 0.0847 0.0774 0.0901 STD. DEVIATIONS 0.0623 0.0549 0.0606 0.0533 0.0534 0.0524 0.0482 0.0471 0.0563 0.0691 0.0683 0.0671 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0025 0.0016 0.0016 0.0014 0.0019 0.0018 0.0016 0.0016 0.0019 0.0019 0.0017 0.0017 STD. DEVIATIONS 0.0042 0.0021 0.0020 0.0018 0.0030 0.0032 0.0022 0.0018 0.0028 0.0026 0.0025 0.0025 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0023 0.0024 0.0027 0.0030 0.0026 0.0022 RUNOFF 0.0021 0.0022 0.0026 0.0024 0.0023 0.0026 STD. DEVIATIONS 0.0026 0.0027 0.0027 0.0022 0.0019 0.0018 ( 0.0015 0.0019 0.0031 0.0035 0.0035 0.0030 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 1.08309 ( 0.52168) ------------------------------------- AVERAGES 0.0075 0.0078 0.0084 0.0095 0.0089 0.0079 0.0079 0.0081 0.0085 0.0074 0.0070 0.0079 STD. DEVIATIONS 0.0055 0.0053 0.0053 0.0048 0.0047 0.0048 1.08285 0.0042 0.0041 0.0051 0.0061 0.0062 0.0059 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 26.100 ( 6.1975) 94742.19 48.697 EVAPOTRANSPIRATION 25.914 ( 2.6028) 94069.56 48.351 LATERAL DRAINAGE COLLECTED 0.33177 ( 0.23663) 1204.308 0.61901 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 1.08309 ( 0.52168) 3931.610 2.02082 LAYER 4 AVERAGE HEAD ON TOP 0.002 ( 0.002) OF LAYER 4 LATERAL DRAINAGE COLLECTED 1.08285 ( 0.52233) 3930.762 2.02039 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.011 0.00001 LAYER 7 AVERAGE HEAD ON TOP 0.008 ( 0.004) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02119 ( 0.02638) 76.929 0.03954 LAYER 8 CHANGE IN WATER STORAGE 0.146 ( ................ 1.4546) 530.97 0.273 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.393 15945.3291 DRAINAGE COLLECTED FROM LAYER 3 0.00597 21.67789 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.009180 33.32381 AVERAGE HEAD ON TOP OF LAYER 4 0.016 MAXIMUM HEAD ON TOP OF LAYER 4 0.033 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 0.0 FEET DRAINAGE COLLECTED FROM LAYER 5 0.00918 33.30651 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00004 AVERAGE HEAD ON TOP OF LAYER 6 0.025 MAXIMUM HEAD ON TOP OF LAYER 6 0.050 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 2.5 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000749 2.71733 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.3896 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0482 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 27.8347 0.2320 2 4.8300 0.2012 3 0.0055 0.0184 4 0.0000 0.0000 5 0.0089 0.0445 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5701 0.2142 SNOW WATER 0.000 -------- - --- --- --------- -- ---------- - - - ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r,.x..x>;?ririr?csYi:s.>.s.>. sY icic is is is is is i:xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?: sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?;kirk irk it?r?;?r?;?rkkkkkkkkskk skkkkkkkkkki;ki;ki;kkkkkkkkkk?r 9r ?r irkkkkkkk?rk?rkkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\ASH25FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\ASH25FT.OUT TIME: 16: 0 DATE: 8/ 4/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkk ksY s'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 300.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1987 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0845 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.11 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.11 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2667 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 45. FEET. DEGREES SCS RUNOFF CURVE NUMBER = 97.30 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.513 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 65.041 INCHES TOTAL INITIAL WATER = 65.041 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- 3AN/3UL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.421 1.368 1.862 1.962 1.473 2.206 3.012 6.484 1.749 1.122 1.972 1.557 STD. DEVIATIONS 0.552 0.935 1.205 1.556 1.274 1.652 1.993 3.355 1.452 1.338 1.479 1.175 EVAPOTRANSPIRATION ------------------ TOTALS 1.547 1.729 2.716 2.508 2.021 2.470 3.190 3.660 2.619 1.581 1.230 1.289 STD. DEVIATIONS 0.188 0.233 0.415 0.948 0.868 0.946 1.192 1.057 0.719 0.678 0.413 0.159 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0297 0.0312 0.0358 0.0325 0.0291 0.0244 0.0241 0.0214 0.0205 0.0194 0.0234 0.0297 STD. DEVIATIONS 0.0308 0.0352 0.0397 0.0310 0.0270 0.0230 0.0204 0.0171 0.0177 0.0251 0.0298 0.0342 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0892 0.0842 0.0973 0.0958 0.0935 0.0846 0.0863 0.0829 0.0782 0.0686 0.0727 0.0868 STD. DEVIATIONS 0.0668 0.0721 0.0770 0.0660 0.0618 0.0560 0.0553 0.0491 0.0484 0.0598 0.0658 0.0721 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0885 0.0841 0.0969 0.0961 0.0941 0.0847 0.0864 0.0831 0.0789 0.0690 0.0719 0.0861 STD. DEVIATIONS 0.0669 0.0714 0.0771 0.0667 0.0622 0.0562 0.0556 0.0496 0.0479 0.0588 0.0657 0.0718 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0025 0.0013 0.0017 0.0017 0.0014 0.0016 0.0017 0.0019 0.0018 0.0019 0.0017 0.0017 STD. DEVIATIONS 0.0038 0.0014 0.0019 0.0021 0.0015 0.0023 0.0027 0.0033 0.0026 0.0027 0.0022 0.0022 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0026 0.0030 0.0032 0.0030 0.0026 0.0022 RUNOFF 0.0021 0.0019 0.0019 0.0017 0.0021 0.0026 STD. DEVIATIONS 0.0027 0.0034 0.0035 0.0028 0.0024 0.0021 ( 0.0018 0.0015 0.0016 0.0022 0.0027 0.0030 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 1.02003 ( 0.61930) ------------------------------------- AVERAGES 0.0078 0.0081 0.0086 0.0088 0.0083 0.0077 0.0076 0.0073 0.0072 0.0061 0.0066 0.0076 STD. DEVIATIONS 0.0059 0.0069 0.0068 0.0061 0.0055 0.0051 0.0049 ............................................................... 0.0044 0.0044 0.0052 0.0060 . .......... . . . ............ . . 0.0063 . AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 25.187 ( 6.1112) 91429.56 46.994 EVAPOTRANSPIRATION 26.560 ( 2.6152) 96414.23 49.556 LATERAL DRAINAGE COLLECTED 0.32123 ( 0.25573) 1166.074 0.59936 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 1.02003 ( 0.61930) 3702.691 1.90316 LAYER 4 AVERAGE HEAD ON TOP 0.002 ( 0.002) OF LAYER 4 LATERAL DRAINAGE COLLECTED 1.01970 ( 0.61953) 3701.523 1.90256 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.011 0.00001 LAYER 7 AVERAGE HEAD ON TOP 0.008 ( 0.005) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02090 ( 0.02427) 75.849 0.03899 LAYER 8 CHANGE IN WATER STORAGE 0.487 ( ................ 1.7113) 1767.45 0.908 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.376 15886.2354 DRAINAGE COLLECTED FROM LAYER 3 0.00549 19.93017 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.008819 32.01279 AVERAGE HEAD ON TOP OF LAYER 4 0.015 MAXIMUM HEAD ON TOP OF LAYER 4 0.031 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 0.0 FEET DRAINAGE COLLECTED FROM LAYER 5 0.00865 31.41195 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00004 AVERAGE HEAD ON TOP OF LAYER 6 0.024 MAXIMUM HEAD ON TOP OF LAYER 6 0.049 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000728 2.64179 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.3932 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0470 Maximum heads are computed using MCEnroe's equations. Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. ....... ........................................................................ . .............. . FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 71.7232 0.2391 2 5.1456 0.2144 3 0.0064 0.0213 4 0.0000 0.0000 5 0.0116 0.0578 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5738 0.2145 SNOW WATER 0.000 .�.� .�.� .�.� .� .. �::: �::: �::: x :: x :: x �::: �::: �: x :r x :r x :r x :r �: �: �: s: �: s: x :: x :: x :: �• �: �• �: �• :: x :: x :: x :: x x x x :::: �::: �::: �::::::::::::: �::: �: ................ ?r ?rk:: ::•-?;i;?;i;?;:Y?r�?r�?r>;ir>;ir>;?r'.c?r'.r kir kir?r;.x..x>; it ir?ri:?ri:s.>.s.>. sY is is is is is is is i:xs.xs. x:: it is it is it is ?r .r x .r x?: sk ?: sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k Yk FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?;kirk irk it?r?;?r?;?rkkkkkkkkskk skk skkkkkkkkxkx kxkkkkkkkkk?r ?r 9r ?r ?rkkkkkkk?rk?rkkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\ASH50FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\ASH50FT.OUT TIME: 16: 0 DATE: 8/ 4/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s'rks'rks'r:'r?r:'r?r:'r?rkks'rks'rkk:Yk:'rk:'rk xsk xsk?r sk kkkkkk?;?;?;?;?;kkkkkkkk?rx?rx?rx kskkkkkkkkkksY ksYk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 600.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1935 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0845 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2674 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. DEGREES SCS RUNOFF CURVE NUMBER = 97.10 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.547 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 121.500 INCHES TOTAL INITIAL WATER = 121.500 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- 3AN/3UL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.395 1.309 1.789 1.894 1.412 2.123 2.900 6.340 1.684 1.082 1.909 1.499 STD. DEVIATIONS 0.533 0.911 1.178 1.526 1.254 1.625 1.966 3.317 1.426 1.306 1.461 1.151 EVAPOTRANSPIRATION ------------------ TOTALS 1.555 1.739 2.763 2.547 2.107 2.542 3.301 3.727 2.658 1.622 1.266 1.289 STD. DEVIATIONS 0.163 0.224 0.409 0.993 0.908 0.986 1.164 1.015 0.731 0.670 0.391 0.166 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0194 0.0229 0.0291 0.0241 0.0212 0.0187 0.0179 0.0156 0.0136 0.0128 0.0179 0.0231 STD. DEVIATIONS 0.0267 0.0292 0.0370 0.0309 0.0286 0.0247 0.0212 0.0190 0.0165 0.0190 0.0275 0.0341 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0642 0.0682 0.0804 0.0735 0.0700 0.0658 0.0667 0.0626 0.0591 0.0526 0.0607 0.0682 STD. DEVIATIONS 0.0637 0.0659 0.0792 0.0691 0.0663 0.0605 0.0591 0.0544 0.0456 0.0514 0.0615 0.0725 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0637 0.0673 0.0802 0.0742 0.0706 0.0655 0.0670 0.0629 0.0596 0.0524 0.0601 0.0680 STD. DEVIATIONS 0.0642 0.0643 0.0794 0.0697 0.0667 0.0608 0.0591 0.0550 0.0459 0.0507 0.0606 0.0720 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0024 0.0016 0.0020 0.0018 0.0011 0.0017 0.0016 0.0016 0.0017 0.0021 0.0017 0.0017 STD. DEVIATIONS 0.0034 0.0018 0.0023 0.0025 0.0013 0.0020 0.0019 0.0019 0.0030 0.0030 0.0020 0.0023 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0017 0.0022 0.0026 0.0022 0.0019 0.0017 RUNOFF 0.0016 0.0014 0.0013 0.0011 0.0017 0.0021 STD. DEVIATIONS 0.0024 0.0029 0.0033 0.0029 0.0026 0.0023 ( 0.0019 0.0017 0.0015 0.0017 0.0025 0.0031 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.79191 ( 0.62924) ------------------------------------- AVERAGES 0.0057 0.0066 0.0072 0.0069 0.0063 0.0061 0.0060 0.0056 0.0055 0.0047 0.0056 0.0061 STD. DEVIATIONS 0.0057 0.0063 0.0071 0.0065 0.0060 0.0056 0.79149 0.0053 0.0049 0.0042 0.0045 0.0056 0.0064 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 24.335 ( 6.0254) 88337.42 45.405 EVAPOTRANSPIRATION 27.115 ( 2.6139) 98428.21 50.592 LATERAL DRAINAGE COLLECTED 0.23629 ( 0.24732) 857.715 0.44086 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 0.79191 ( 0.62924) 2874.623 1.47754 LAYER 4 AVERAGE HEAD ON TOP 0.002 ( 0.002) OF LAYER 4 LATERAL DRAINAGE COLLECTED 0.79149 ( 0.62899) 2873.103 1.47676 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.010 0.00000 LAYER 7 AVERAGE HEAD ON TOP 0.006 ( 0.005) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02087 ( 0.02194) 75.758 0.03894 LAYER 8 CHANGE IN WATER STORAGE 1.097 ( 1.7283) 3982.51 ................ 2.047 PEAK DAILY VALUES FOR YEARS ---------------------------------------- PRECIPITATION RUNOFF DRAINAGE COLLECTED FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH LAYER 4 AVERAGE HEAD ON TOP OF LAYER 4 MAXIMUM HEAD ON TOP OF LAYER 4 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) DRAINAGE COLLECTED FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH LAYER 7 AVERAGE HEAD ON TOP OF LAYER 6 MAXIMUM HEAD ON TOP OF LAYER 6 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) PERCOLATION/LEAKAGE THROUGH LAYER 8 SNOW WATER MAXIMUM VEG. SOIL WATER (VOL/VOL) MINIMUM VEG. SOIL WATER (VOL/VOL) 1 THROUGH 30 ------------------------------ (INCHES) (CU. FT.) 5.25 19057.500 4.354 15803.2168 0.00608 22.06635 0.009352 33.94861 0.017 0.035 0.0 FEET 0.00825 29.94357 0.000000 0.00004 0.023 0.045 6.7 FEET 0.000761 2.76239 1.16 4211.9434 0.3984 0.0482 Maximum heads are computed using MCEnroe's equations. Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. FINAL *wTsn sronAcs AT swo OF YEAR 30 ___________________________________ LAvsx (zwc*ss) {voL/voL) ___ _____ --------- 1 ____1 146.2871 0.2*38 Z 5.3334 0.2222 J 0.0086 0.0285 4 0.0000 0.0000 5 0.0I45 0.0724 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5828 0.2152 swow wxrsx 0.000 ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;ir>;ir>;kkkk kir kir?r^x..x>;?ririricskic.,...,...,x..x^>r^>r^..s,..s,..sY?r ?; ?r ?; ?r ?. s, .. s, .. s, .r .. .. .. K HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION ^x *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, sr s, x?; k:rk?r kir s'r?; s'r?; ?r irk irk irk irk kkkkkkkkirk irkk kk kk irk irk irk irkkkkkkkkkkkkkk?rk?r ?r irk irk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPINT.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\INT50FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\INT50FT.OUT TIME: 11:21 DATE: 8/ 5/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk xkxk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is ksk kskkks'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 12.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.3833 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 600.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2212 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0861 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 5 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS POROSITY FIELD CAPACITY WILTING POINT INITIAL SOIL WATER CONTENT EFFECTIVE SAT. HYD. COND. FML PINHOLE DENSITY FML INSTALLATION DEFECTS FML PLACEMENT QUALITY = 0.06 INCHES = 0.0000 VOL/VOL 0.0000 VOL/VOL 0.0000 VOL/VOL = 0.0000 VOL/VOL = 0.199999996000E-12 CM/SEC = 2.00 HOLES/ACRE = 2.00 HOLES/ACRE = 3 - GOOD LAYER 8 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 9 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2657 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A POOR STAND OF GRASS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. MAXIMUM LEAF AREA INDEX = SCS RUNOFF CURVE NUMBER = 76.30 START OF GROWING SEASON (JULIAN DATE) = FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.987 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 142.752 INCHES TOTAL INITIAL WATER = 142.752 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- ------- 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING 6.58 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 -------------- 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.021 0.117 0.217 0.312 0.192 0.288 0.433 2.154 0.284 0.225 0.407 0.219 STD. DEVIATIONS 0.094 0.232 0.311 0.640 0.428 0.484 0.728 1.754 0.627 0.526 0.665 0.290 EVAPOTRANSPIRATION ------------------ TOTALS 1.378 1.728 2.719 3.037 2.998 3.572 4.267 4.474 3.007 1.686 1.167 1.196 STD. DEVIATIONS 0.220 0.223 0.346 0.830 1.103 1.206 1.166 0.756 0.635 0.671 0.355 0.112 LATERAL DRAINAGE COLLECTED FROM LAYER 4 ---------------------------------------- TOTALS 0.7247 0.7069 0.8747 0.6876 0.6649 0.8441 1.0160 0.8654 0.6062 0.5381 0.8601 0.8275 STD. DEVIATIONS 0.3945 0.5281 0.5297 0.4545 0.4510 0.4918 0.4749 0.4338 0.3477 0.4112 0.5984 0.4076 PERCOLATION/LEAKAGE THROUGH LAYER 5 ------------------------------------ TOTALS 0.5131 0.4683 0.5736 0.4919 0.4874 0.5548 0.6403 0.5845 0.4717 0.4174 0.5489 0.5654 STD. DEVIATIONS 0.2151 0.2476 0.2399 0.2138 0.2212 0.2335 0.2275 0.2139 0.1804 0.2043 0.2685 0.1993 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.5143 0.4601 0.5790 0.4999 0.4822 0.5455 0.6411 0.5885 0.4825 0.4097 0.5459 0.5681 STD. DEVIATIONS 0.2132 0.2421 0.2436 0.2093 0.2162 0.2371 0.0784 0.2262 0.2160 0.1844 0.1950 0.2689 0.2002 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.0475 0.0421 0.0404 0.0455 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0218 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 9 CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( ------------------------------------ TOTALS 0.0020 0.0012 0.0020 0.0019 0.0020 0.0018 9.085 0.0018 0.0018 0.0017 0.0017 0.0014 0.0016 STD. DEVIATIONS 0.0029 0.0015 0.0030 0.0030 0.0031 0.0025 0.0027 0.0025 0.0023 0.0022 0.0015 0.0020 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 5 ------------------------------------- AVERAGES 0.0649 0.0696 0.0784 0.0637 0.0596 0.0782 0.0911 0.0776 0.0561 0.0482 0.0797 0.0742 STD. DEVIATIONS 0.0354 0.0522 0.0475 0.0421 0.0404 0.0455 0.0426 0.0389 0.0322 0.0369 0.0554 0.0365 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0461 0.0453 0.0519 0.0463 0.0432 0.0505 0.0575 0.0527 0.0447 0.0367 0.0506 0.0509 STD. DEVIATIONS 0.0191 0.0239 0.0218 0.0194 0.0194 0.0220 0.0203 0.0194 0.0171 0.0175 0.0249 0.0179 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 4.869 ( 2.5943) 17675.89 9.085 EVAPOTRANSPIRATION 31.229 ( 2.8356) 113361.45 58.267 LATERAL DRAINAGE COLLECTED 9.21627 ( 3.96077) 33455.047 17.19570 FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH LAYER 5 AVERAGE HEAD ON TOP OF LAYER 5 LATERAL DRAINAGE COLLECTED FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH LAYER 8 AVERAGE HEAD ON TOP OF LAYER 7 PERCOLATION/LEAKAGE THROUGH LAYER 9 CHANGE IN WATER STORAGE 6.31736 ( 2.11766) 22932.021 11.78693 0.070 ( 0.030) 6.31672 ( 2.11896) 22929.699 11.78573 0.00001 ( 0.00000) 0.022 0.00001 0.048 ( 0.016) 0.02080 ( 0.02819) 1.944 ( 8.1914) 75.515 0.03881 7057.10 3.627 'r ?: 'r :�: :�:•-?c?c?c?c?c:Y?r:Y?r:Y?r>cic>cic>c?c?c?c?c?c?c?c?cic,.x..x>cir;rir;rir;rs.>.s.>.s..c...c...c...c..xs.xs. xi: it ?c it ?c it ?c ?r .rx?c sk kx .rx .r PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 3.592 13038.1807 DRAINAGE COLLECTED FROM LAYER 4 0.09603 348.59100 PERCOLATION/LEAKAGE THROUGH LAYER 5 0.038350 139.20956 AVERAGE HEAD ON TOP OF LAYER 5 0.267 MAXIMUM HEAD ON TOP OF LAYER 5 0.521 LOCATION OF MAXIMUM HEAD IN LAYER 4 0.0928 (DISTANCE FROM DRAIN) 8.9 FEET DRAINAGE COLLECTED FROM LAYER 6 0.03679 133.55727 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000000 0.00011 AVERAGE HEAD ON TOP OF LAYER 7 0.102 MAXIMUM HEAD ON TOP OF LAYER 7 0.202 LOCATION OF MAXIMUM HEAD IN LAYER 6 0.7500 (DISTANCE FROM DRAIN) 3.9 FEET PERCOLATION/LEAKAGE THROUGH LAYER 9 0.000682 2.47417 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. .� .� .� .� .� .� .� sY?: sY?: sY?: ?; ;.r ?; ;.r ?; ;.r sY ?; sk ?; sk ?; X ;.r X ?; X ?; ?; s'r ?; s'r ?; s'r ?; � ?; � ?; � ?; sk ?; sk ?.:. :..� .� .� .� .� .� .� .•n•. ?; ?; ?; ?; ?; sY :Y sY :Y sY?; ?; sY ?; sY ?; sY?; sY?r .............. ................... .. .. .. .. .. ..:?:?rsk?rsk?rsr...r...r:;?;?;?;?;?;s..r...r...r..:r?;?:?;?;sY?:s...........s..es...s..................r...r...... .. .r .. .r .. .r .. .. .. .. .. s. .r s. .r FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- 1 -------- 3.8433 --------- 0.3203 2 188.2023 0.3137 3 6.2287 0.2595 4 0.0278 0.0928 5 0.0000 0.0000 6 0.0210 0.1051 7 0.0000 0.0000 8 0.1875 0.7500 9 2.5647 0.2137 SNOW WATER 0.000 '.e�'.e�Y'.e �Y'.e :: is :: is :: is is ie is is is is �-ism-ism-k:Yk:Yk:Yk:Y��:Yk:Yk:Yk:Yk:Ykx'.e aY kaY k:Yk:Yk:Yk:Y'.:::x::'.::: x:Yx:Yx:Y 4: �-i: �-i: :Y'.e :Yk ir�Yir�Yir�Yiririciriciric�Yir�Yir�Yiricicicicic�Yic�kic�kicicicirxirxirxiritiritiritxi:xi:xiricirici:icicic�Yx�Yx�Y9cicsYiriciri:�Yir�Yic�Yi:i:iti: ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r,.x..x>;?riririrski:s....,...,x..>r..>r..>r....s,..s,..sY?r ?; ?r ?; ?r ?. s, .. s, .. s, .r .. .. .. K HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION x *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?;kirk irk it?r?;?r?;?rkkkkkkkkskk skkkkkkkkkki;ki;ki;kkkkkkkkk?rk?rk?rkkkkkkk?rk?rk kskkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\ASH70FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\ASH70FT.OUT TIME: 16: 1 DATE: 8/ 4/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk xkxk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is ksk kskkks'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 840.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1916 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0845 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2676 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. DEGREES SCS RUNOFF CURVE NUMBER = 97.10 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.547 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 166.383 INCHES TOTAL INITIAL WATER = 166.383 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- 3AN/3UL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.395 1.309 1.789 1.894 1.412 2.123 2.900 6.340 1.684 1.082 1.909 1.499 STD. DEVIATIONS 0.533 0.911 1.178 1.526 1.254 1.625 1.966 3.317 1.426 1.306 1.461 1.151 EVAPOTRANSPIRATION ------------------ TOTALS 1.555 1.739 2.763 2.547 2.107 2.542 3.301 3.727 2.658 1.622 1.266 1.289 STD. DEVIATIONS 0.163 0.224 0.409 0.993 0.908 0.986 1.164 1.015 0.731 0.670 0.391 0.166 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0087 0.0095 0.0157 0.0147 0.0141 0.0125 0.0122 0.0110 0.0097 0.0065 0.0059 0.0104 STD. DEVIATIONS 0.0157 0.0143 0.0233 0.0226 0.0225 0.0207 0.0170 0.0135 0.0118 0.0107 0.0132 0.0201 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0393 0.0400 0.0541 0.0515 0.0530 0.0493 0.0517 0.0514 0.0481 0.0358 0.0319 0.0433 STD. DEVIATIONS 0.0455 0.0431 0.0620 0.0591 0.0581 0.0542 0.0521 0.0470 0.0422 0.0381 0.0370 0.0498 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0395 0.0392 0.0535 0.0519 0.0531 0.0492 0.0517 0.0515 0.0484 0.0370 0.0314 0.0427 STD. DEVIATIONS 0.0462 0.0419 0.0615 0.0593 0.0586 0.0540 0.0526 0.0471 0.0426 0.0385 0.0365 0.0489 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0023 0.0016 0.0020 0.0017 0.0011 0.0017 0.0015 0.0017 0.0018 0.0021 0.0016 0.0016 STD. DEVIATIONS 0.0033 0.0019 0.0024 0.0025 0.0013 0.0020 0.0018 0.0018 0.0031 0.0031 0.0020 0.0021 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 ------------------------------------------------------------------------------- INCHES CU. FEET ------------------------------------- AVERAGES 0.0008 0.0009 0.0014 0.0014 0.0013 0.0012 RUNOFF 0.0011 0.0010 0.0009 0.0006 0.0005 0.0009 STD. DEVIATIONS 0.0014 0.0014 0.0021 0.0021 0.0020 0.0019 ( 0.0015 0.0012 0.0011 0.0010 0.0012 0.0018 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.54939 ( 0.50156) ------------------------------------- AVERAGES 0.0035 0.0039 0.0048 0.0048 0.0048 0.0046 0.0046 0.0046 0.0045 0.0033 0.0029 0.0038 STD. DEVIATIONS 0.0041 0.0041 0.0055 0.0055 0.0052 0.0050 0.54907 0.0047 0.0042 0.0039 0.0034 0.0034 0.0044 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 24.335 ( 6.0254) 88337.42 45.405 EVAPOTRANSPIRATION 27.115 ( 2.6139) 98428.21 50.592 LATERAL DRAINAGE COLLECTED 0.13085 ( 0.16224) 474.980 0.24414 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 0.54939 ( 0.50156) 1994.272 1.02504 LAYER 4 AVERAGE HEAD ON TOP 0.001 ( 0.001) OF LAYER 4 LATERAL DRAINAGE COLLECTED 0.54907 ( 0.50175) 1993.128 1.02446 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.009 0.00000 LAYER 7 AVERAGE HEAD ON TOP 0.004 ( 0.004) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02087 ( 0.02100) 75.772 0.03895 LAYER 8 CHANGE IN WATER STORAGE 1.445 ( ................ 1.6220) 5245.21 2.696 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 4.354 15803.2168 DRAINAGE COLLECTED FROM LAYER 3 0.00468 17.00595 PERCOLATION/LEAKAGE THROUGH LAYER 4 0.008199 29.76173 AVERAGE HEAD ON TOP OF LAYER 4 0.013 MAXIMUM HEAD ON TOP OF LAYER 4 0.026 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) 4.3 FEET DRAINAGE COLLECTED FROM LAYER 5 0.00756 27.44781 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000000 0.00004 AVERAGE HEAD ON TOP OF LAYER 6 0.021 MAXIMUM HEAD ON TOP OF LAYER 6 0.041 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) 7.8 FEET PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000771 2.79714 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.3984 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0482 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. ................................ FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 201.7663 0.2402 2 5.1749 0.2156 3 0.0065 0.0218 4 0.0000 0.0000 5 0.0114 0.0569 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5849 0.2154 SNOW WATER 0.000 a,�a,�a,�a�:::�:::�:::tttttt�•����t+t+t+t+::�•::�•*�.;t:: ;t:�:;t:�:� �� ��aaaaaaa;�;����x��;xxx�:x�:��:��::x::x ?rkk:: ::•-?r?r?r?r?r:Y?r�?r�?r>r?r>r?r>r?r'.c?r'.r kir kir?r,.x..x>r?ririr?csYics.>.s.>. sY icic is is is is is it xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?: sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE kk HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION kk *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?;kirk irk it?r?;?r?;?rkkkkkkkkskk skkkkkkkkkki;ki;ki;kkkkkkkkk?rk?rk?rkkkkkkk?rk?rkkkkk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPINT.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\INT70FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\INT70FT.OUT TIME: 11:22 DATE: 8/ 5/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkk ksY s'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 12.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.3833 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 840.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2114 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0858 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 5 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.08 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS POROSITY FIELD CAPACITY WILTING POINT INITIAL SOIL WATER CONTENT EFFECTIVE SAT. HYD. COND. FML PINHOLE DENSITY FML INSTALLATION DEFECTS FML PLACEMENT QUALITY = 0.06 INCHES = 0.0000 VOL/VOL 0.0000 VOL/VOL 0.0000 VOL/VOL = 0.0000 VOL/VOL = 0.199999996000E-12 CM/SEC = 2.00 HOLES/ACRE = 2.00 HOLES/ACRE = 3 - GOOD LAYER 8 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 9 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2667 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A POOR STAND OF GRASS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. MAXIMUM LEAF AREA INDEX = SCS RUNOFF CURVE NUMBER = 76.30 START OF GROWING SEASON (JULIAN DATE) = FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.987 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 187.644 INCHES TOTAL INITIAL WATER = 187.644 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- ------- 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING 6.58 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 -------------- 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.021 0.117 0.217 0.312 0.192 0.288 0.433 2.154 0.284 0.225 0.407 0.219 STD. DEVIATIONS 0.094 0.232 0.311 0.640 0.428 0.484 0.728 1.754 0.627 0.526 0.665 0.290 EVAPOTRANSPIRATION ------------------ TOTALS 1.378 1.728 2.719 3.037 2.998 3.572 4.267 4.474 3.007 1.686 1.167 1.196 STD. DEVIATIONS 0.220 0.223 0.346 0.830 1.103 1.206 1.166 0.756 0.635 0.671 0.355 0.112 LATERAL DRAINAGE COLLECTED FROM LAYER 4 ---------------------------------------- TOTALS 0.6571 0.6296 0.8217 0.6312 0.6115 0.7834 0.9623 0.8136 0.6055 0.4806 0.7924 0.7530 STD. DEVIATIONS 0.4033 0.5279 0.5429 0.4248 0.4426 0.5232 0.5319 0.4780 0.3740 0.3945 0.5839 0.4379 PERCOLATION/LEAKAGE THROUGH LAYER 5 ------------------------------------ TOTALS 0.4772 0.4268 0.5417 0.4601 0.4571 0.5184 0.6038 0.5516 0.4647 0.3860 0.5168 0.5246 STD. DEVIATIONS 0.2299 0.2582 0.2664 0.2265 0.2309 0.2617 0.2709 0.2462 0.2025 0.2110 0.2746 0.2268 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.4786 0.4195 0.5464 0.4685 0.4511 0.5097 0.6045 0.5544 0.4746 0.3841 0.5094 0.5273 STD. DEVIATIONS 0.2300 0.2519 0.2686 0.2232 0.2284 0.2625 0.0736 0.2695 0.2499 0.2055 0.2014 0.2735 0.2281 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.0487 0.0393 0.0397 0.0485 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0241 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 9 CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( ------------------------------------ TOTALS 0.0021 0.0012 0.0021 0.0020 0.0021 0.0017 9.085 0.0020 0.0019 0.0016 0.0016 0.0013 0.0016 STD. DEVIATIONS 0.0030 0.0013 0.0032 0.0028 0.0034 0.0020 0.0030 0.0027 0.0022 0.0021 0.0013 0.0021 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 5 ------------------------------------- AVERAGES 0.0589 0.0620 0.0736 0.0585 0.0548 0.0726 0.0862 0.0729 0.0561 0.0431 0.0734 0.0675 STD. DEVIATIONS 0.0361 0.0521 0.0487 0.0393 0.0397 0.0485 0.0477 0.0428 0.0346 0.0354 0.0541 0.0392 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0429 0.0413 0.0490 0.0434 0.0404 0.0472 0.0542 0.0497 0.0440 0.0344 0.0472 0.0473 STD. DEVIATIONS 0.0206 0.0249 0.0241 0.0207 0.0205 0.0243 0.0241 0.0224 0.0190 0.0181 0.0253 0.0204 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 4.869 ( 2.5943) 17675.89 9.085 EVAPOTRANSPIRATION 31.229 ( 2.8356) 113361.45 58.267 LATERAL DRAINAGE COLLECTED 8.54198 ( 4.29042) 31007.373 15.93761 FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH LAYER 5 AVERAGE HEAD ON TOP OF LAYER 5 LATERAL DRAINAGE COLLECTED FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH LAYER 8 AVERAGE HEAD ON TOP OF LAYER 7 PERCOLATION/LEAKAGE THROUGH LAYER 9 CHANGE IN WATER STORAGE 5.92869 ( 2.42987) 21521.150 11.06175 0.065 ( 0.033) 5.92797 ( 2.43143) 21518.535 11.06040 0.00001 ( 0.00000) 0.021 0.00001 0.045 ( 0.019) 0.02110 ( 0.02710) 3.007 ( 8.8399) 76.583 0.03936 10914.87 5.610 'r ?: 'r :�: :�:•-?c?c?c?c?c:Y?r:Y?r:Y?r>cic>cic>c?c?c?c?c?c?c?c?cic,.x..x>cir;rir;rir;rs.>.s.>.s..c...c...c...c..xs.xs. xi: it ?c it ?c it ?c ?c .c x .c x?: k?: k?: PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 3.592 13038.1807 DRAINAGE COLLECTED FROM LAYER 4 0.08938 324.43338 PERCOLATION/LEAKAGE THROUGH LAYER 5 0.036942 134.09976 AVERAGE HEAD ON TOP OF LAYER 5 0.248 MAXIMUM HEAD ON TOP OF LAYER 5 0.486 LOCATION OF MAXIMUM HEAD IN LAYER 4 (DISTANCE FROM DRAIN) 8.4 FEET DRAINAGE COLLECTED FROM LAYER 6 0.03464 125.75536 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000000 0.00010 AVERAGE HEAD ON TOP OF LAYER 7 0.096 MAXIMUM HEAD ON TOP OF LAYER 7 0.191 LOCATION OF MAXIMUM HEAD IN LAYER 6 (DISTANCE FROM DRAIN) 3.2 FEET PERCOLATION/LEAKAGE THROUGH LAYER 9 0.000725 2.63133 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. .� .� .� .� .� .� .� sY?: ?: ?: ?: ?: ?c ?c ?c ?c ?c ?c s'c ?c s'c ?: s'c ;•r ;•r ;.r k ;.r k ;.r k ?c �• ?c �• ?c �• s'c?c s'c?c s'c?c ?: ?c ?: ?c ?: s'c sY s'c sY s'c sY s'c sY ?c k ?c k ?c k s'c :Y s'c :Y s'c sY ?c ?c ?c ?c ?c s'c?c s'c?c .............. ................................ FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 3.8433 0.3203 2 264.8559 0.3153 3 6.3387 0.2641 4 0.0331 0.1102 5 0.0000 0.0000 6 0.0234 0.1171 7 0.0000 0.0000 8 0.1875 0.7500 9 2.5671 0.2139 SNOW WATER 0.000 ..............::::�;:;�;:;tttttt:;:;�-x�•ttt�rt�rt�r�....................::������:........:::r::������:r:::rt:rt�����::�;x�. ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r;.x..x>;?ririririrics.>.s.>. sY icic is is is is is it xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?: sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?;kirk irk it?r?;?r?;?rkkkkkkkkskk skkkkkkkkkki;ki;ki;kkkkkkkkk?r it?rk?rkkkkkk k?rk?rkkkick PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPBG.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\ASH90FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\ASH90FT.OUT TIME: 16: 1 DATE: 8/ 4/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkk ksY s'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 1104.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1905 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0845 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 3 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 4 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 5 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 6 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 7 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 8 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2677 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE #30 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. DEGREES SCS RUNOFF CURVE NUMBER = 97.10 FRACTION OF AREA ALLOWING RUNOFF = 90.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.547 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 5.410 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.470 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 215.751 INCHES TOTAL INITIAL WATER = 215.751 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM PRECIPITATION DATA WAS Wilmington North Carolina GENERATED USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 0.00 START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 -------------- 3.34 4.14 ------- 4.04 ------- 3.69 ------- 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.395 1.309 1.789 1.894 1.412 2.123 2.900 6.340 1.684 1.082 1.909 1.499 STD. DEVIATIONS 0.533 0.911 1.178 1.526 1.254 1.625 1.966 3.317 1.426 1.306 1.461 1.151 EVAPOTRANSPIRATION ------------------ TOTALS 1.555 1.739 2.763 2.547 2.107 2.542 3.301 3.727 2.658 1.622 1.266 1.289 STD. DEVIATIONS 0.163 0.224 0.409 0.993 0.908 0.986 1.164 1.015 0.731 0.670 0.391 0.166 LATERAL DRAINAGE COLLECTED FROM LAYER 3 ---------------------------------------- TOTALS 0.0035 0.0028 0.0048 0.0061 0.0077 0.0070 0.0076 0.0072 0.0066 0.0048 0.0032 0.0051 STD. DEVIATIONS 0.0071 0.0053 0.0097 0.0116 0.0135 0.0137 0.0138 0.0109 0.0084 0.0066 0.0048 0.0111 PERCOLATION/LEAKAGE THROUGH LAYER 4 ------------------------------------ TOTALS 0.0241 0.0203 0.0282 0.0316 0.0357 0.0351 0.0381 0.0384 0.0388 0.0329 0.0246 0.0296 STD. DEVIATIONS 0.0289 0.0237 0.0344 0.0402 0.0472 0.0437 0.0455 0.0428 0.0375 0.0317 0.0265 0.0359 LATERAL DRAINAGE COLLECTED FROM LAYER 5 ---------------------------------------- TOTALS 0.0248 0.0200 0.0274 0.0317 0.0355 0.0351 0.0379 0.0385 0.0386 0.0339 0.0249 0.0289 STD. DEVIATIONS 0.0302 0.0231 0.0339 0.0400 0.0469 0.0437 0.0456 0.0429 0.0381 0.0321 0.0261 0.0351 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 8 ------------------------------------ TOTALS 0.0023 0.0016 0.0019 0.0016 0.0011 0.0018 0.0015 0.0018 0.0020 0.0021 0.0015 0.0016 STD. DEVIATIONS 0.0033 0.0019 0.0024 0.0025 0.0013 0.0020 0.0017 0.0018 0.0031 0.0031 0.0020 0.0022 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 4 30 ------------------------------------------------------------------------------- INCHES ------------------------------------- AVERAGES 0.0003 0.0003 0.0005 0.0006 0.0007 0.0007 --------- 100.00 0.0007 0.0007 0.0006 0.0004 0.0003 0.0005 STD. DEVIATIONS 0.0007 0.0005 0.0009 0.0011 0.0013 0.0013 0.06643 0.0013 0.0010 0.0008 0.0006 0.0005 0.0010 DAILY AVERAGE HEAD ON TOP OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.37742 ( ------------------------------------- AVERAGES 0.0023 0.0021 0.0026 0.0031 0.0033 0.0034 0.0035 0.0036 0.0037 0.0032 0.0024 0.0027 STD. DEVIATIONS 0.0028 0.0024 0.0032 0.0039 0.0044 0.0042 0.0043 0.0040 0.0037 0.0030 0.0025 0.0033 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 24.335 ( 6.0254) 88337.42 45.405 EVAPOTRANSPIRATION 27.115 ( 2.6139) 98428.21 50.592 LATERAL DRAINAGE COLLECTED 0.06643 ( 0.08996) 241.125 0.12394 FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH 0.37742 ( 0.36604) 1370.050 0.70420 LAYER 4 AVERAGE HEAD ON TOP 0.001 ( 0.001) OF LAYER 4 LATERAL DRAINAGE COLLECTED 0.37720 ( 0.36635) 1369.242 0.70378 FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.009 0.00000 LAYER 7 AVERAGE HEAD ON TOP 0.003 ( 0.003) OF LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.02087 ( 0.02117) 75.745 0.03893 LAYER 8 CHANGE IN WATER STORAGE 1.681 ( 1.5815) 6102.97 ................ 3.137 PEAK DAILY VALUES FOR YEARS ---------------------------------------- PRECIPITATION RUNOFF DRAINAGE COLLECTED FROM LAYER 3 PERCOLATION/LEAKAGE THROUGH LAYER 4 AVERAGE HEAD ON TOP OF LAYER 4 MAXIMUM HEAD ON TOP OF LAYER 4 LOCATION OF MAXIMUM HEAD IN LAYER 3 (DISTANCE FROM DRAIN) DRAINAGE COLLECTED FROM LAYER 5 PERCOLATION/LEAKAGE THROUGH LAYER 7 AVERAGE HEAD ON TOP OF LAYER 6 MAXIMUM HEAD ON TOP OF LAYER 6 LOCATION OF MAXIMUM HEAD IN LAYER 5 (DISTANCE FROM DRAIN) PERCOLATION/LEAKAGE THROUGH LAYER 8 SNOW WATER MAXIMUM VEG. SOIL WATER (VOL/VOL) MINIMUM VEG. SOIL WATER (VOL/VOL) .............. 1 THROUGH 30 ------------------------------ (INCHES) (CU. FT.) 5.25 19057.500 4.354 15803.2168 0.00334 12.13953 0.007055 25.60898 0.010 0.020 0.0 FEET 0.00640 23.22100 0.000000 0.00004 0.018 0.036 15.1 FEET 0.000774 2.80891 1.16 4211.9434 0.3984 0.0482 Maximum heads are computed using MCEnroe's equations. Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. ....... ... ...................................................................... .. .................. . FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 258.5519 0.2342 2 4.8502 0.2021 3 0.0051 0.0170 4 0.0000 0.0000 5 0.0086 0.0431 6 0.0000 0.0000 7 0.1875 0.7500 8 2.5859 0.2155 SNOW WATER 0.000 ................ ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;?r>;?r>;kkkk kir kir?r,.x..x>;?ririr?csYics.>.s.>. sY icic is is is is is it xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?:k x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) *?° DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION *?° FOR USEPA RISK REDUCTION ENGINEERING LABORATORY xx .r .r .r .r .r .r .r sr s, xs, x?; kirk irk it?r?;?r?; ?rkkkkkkkkskk skkkkkkkkkki; ki; ki; kkkkkkkkk?rk?rk?rkkkkkkk?rk?rkkki: sk PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPINT.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\INT90FT.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\INT90FT.OUT TIME: 11:22 DATE: 8/ 5/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk s';ks';ks'::'rir:'rir:'r irk sY k sYk:'rk irk irk :'rk i:k i:k i:kirk irk irk is is is is is kkkk ksY s'rk it is it is is i:kkkkkkir ?: it ?: irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 12.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.3833 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 1104.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2056 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0856 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 5 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS POROSITY FIELD CAPACITY WILTING POINT INITIAL SOIL WATER CONTENT EFFECTIVE SAT. HYD. COND. FML PINHOLE DENSITY FML INSTALLATION DEFECTS FML PLACEMENT QUALITY = 0.06 INCHES = 0.0000 VOL/VOL 0.0000 VOL/VOL 0.0000 VOL/VOL = 0.0000 VOL/VOL = 0.199999996000E-12 CM/SEC = 2.00 HOLES/ACRE = 2.00 HOLES/ACRE = 3 - GOOD LAYER 8 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 9 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2661 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A POOR STAND OF GRASS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. MAXIMUM LEAF AREA INDEX = SCS RUNOFF CURVE NUMBER = 76.30 START OF GROWING SEASON (JULIAN DATE) = FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 3.987 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 237.004 INCHES TOTAL INITIAL WATER = 237.004 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM Wilmington North Carolina STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 0 END OF GROWING SEASON (JULIAN DATE) = 367 EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY PRECIPITATION (INCHES) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 2.23 ------- 3.34 ------- 4.14 ------- 4.04 ------- ------- 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING 6.58 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------- 48.00 ------- 49.10 ------- 54.30 ------- 63.70 -------------- 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA AND STATION LATITUDE = 34.30 DEGREES AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------ PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.021 0.117 0.217 0.312 0.192 0.288 0.433 2.154 0.284 0.225 0.407 0.219 STD. DEVIATIONS 0.094 0.232 0.311 0.640 0.428 0.484 0.728 1.754 0.627 0.526 0.665 0.290 EVAPOTRANSPIRATION ------------------ TOTALS 1.378 1.728 2.719 3.037 2.998 3.572 4.267 4.474 3.007 1.686 1.167 1.196 STD. DEVIATIONS 0.220 0.223 0.346 0.830 1.103 1.206 1.166 0.756 0.635 0.671 0.355 0.112 LATERAL DRAINAGE COLLECTED FROM LAYER 4 ---------------------------------------- TOTALS 0.5878 0.5769 0.7046 0.5493 0.5549 0.7098 0.8872 0.7646 0.5545 0.4437 0.6943 0.6761 STD. DEVIATIONS 0.4106 0.5180 0.5731 0.4032 0.4182 0.5338 0.5450 0.4877 0.4106 0.3823 0.5806 0.4498 PERCOLATION/LEAKAGE THROUGH LAYER 5 ------------------------------------ TOTALS 0.4460 0.4096 0.4857 0.4249 0.4401 0.4886 0.5813 0.5339 0.4357 0.3731 0.4715 0.4898 STD. DEVIATIONS 0.2481 0.2664 0.2962 0.2324 0.2326 0.2843 0.2864 0.2714 0.2366 0.2196 0.2960 0.2547 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.4455 0.4052 0.4897 0.4314 0.4332 0.4836 0.5779 0.5390 0.4442 0.3732 0.4623 0.4939 STD. DEVIATIONS 0.2503 0.2583 0.3005 0.2333 0.2311 0.2801 0.0657 0.2875 0.2726 0.2408 0.2111 0.2945 0.2554 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.0534 0.0388 0.0390 0.0514 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0280 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 9 CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( ------------------------------------ TOTALS 0.0019 0.0014 0.0020 0.0019 0.0020 0.0017 9.085 0.0019 0.0019 0.0017 0.0017 0.0011 0.0016 STD. DEVIATIONS 0.0026 0.0015 0.0030 0.0027 0.0033 0.0019 0.0028 0.0027 0.0019 0.0020 0.0010 0.0022 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 5 ------------------------------------- AVERAGES 0.0548 0.0591 0.0657 0.0529 0.0517 0.0684 0.0827 0.0713 0.0534 0.0414 0.0669 0.0630 STD. DEVIATIONS 0.0383 0.0532 0.0534 0.0388 0.0390 0.0514 0.0508 0.0455 0.0395 0.0356 0.0559 0.0419 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0415 0.0415 0.0456 0.0415 0.0404 0.0466 0.0539 0.0502 0.0428 0.0348 0.0445 0.0460 STD. DEVIATIONS 0.0233 0.0265 0.0280 0.0225 0.0215 0.0270 0.0268 0.0254 0.0232 0.0197 0.0284 0.0238 AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT PRECIPITATION ------------------- 53.60 ( 9.125) ------------- 194554.7 --------- 100.00 RUNOFF 4.869 ( 2.5943) 17675.89 9.085 EVAPOTRANSPIRATION 31.229 ( 2.8356) 113361.45 58.267 LATERAL DRAINAGE COLLECTED 7.70381 ( 4.54651) 27964.846 14.37377 FROM LAYER 4 PERCOLATION/LEAKAGE THROUGH LAYER 5 AVERAGE HEAD ON TOP OF LAYER 5 LATERAL DRAINAGE COLLECTED FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH LAYER 8 AVERAGE HEAD ON TOP OF LAYER 7 PERCOLATION/LEAKAGE THROUGH LAYER 9 CHANGE IN WATER STORAGE 5.58016 ( 2.72382) 20255.984 10.41146 0.061 ( 0.036) 5.57929 ( 2.72518) 20252.834 10.40984 0.00001 ( 0.00000) 0.020 0.00001 0.044 ( 0.022) 0.02083 ( 0.02610) 4.194 ( 9.3196) 75.606 0.03886 15224.07 7.825 'r ?: 'r :�: :�:•-?c?c?c?c?c:Y?r:Y?r:Y?r>cic>cic>c?c?c?c?c?c?c?c?cic,.x..x>cir;rir;rir;rs.>.s.>.s..c...c...c...c..xs.xs. xi: it ?c it ?c it ?c ?c .c x .c x?: k?: k?: PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 3.592 13038.1807 DRAINAGE COLLECTED FROM LAYER 4 0.08480 307.83209 PERCOLATION/LEAKAGE THROUGH LAYER 5 0.036687 133.17285 AVERAGE HEAD ON TOP OF LAYER 5 0.245 MAXIMUM HEAD ON TOP OF LAYER 5 0.479 LOCATION OF MAXIMUM HEAD IN LAYER 4 0.1340 (DISTANCE FROM DRAIN) 8.5 FEET DRAINAGE COLLECTED FROM LAYER 6 0.03466 125.82976 PERCOLATION/LEAKAGE THROUGH LAYER 8 0.000000 0.00011 AVERAGE HEAD ON TOP OF LAYER 7 0.100 MAXIMUM HEAD ON TOP OF LAYER 7 0.198 LOCATION OF MAXIMUM HEAD IN LAYER 6 0.7500 (DISTANCE FROM DRAIN) 4.7 FEET PERCOLATION/LEAKAGE THROUGH LAYER 9 0.000697 2.53094 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE Journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. .� .� .� .� .� .� .� sY?: sY?: sY?::::Y :::Y :::Y :•r ?r :•r ?r :•r ?r sY?c sY?r x?r x ?r �• ?r �• ?r �• :Y?::•r?::•r?: ?: ?r ?: ?r ?::•r :Y :•r :Y :•r :Y :•r :Y ?r :Y ?r :Y ?r :Y :•r ;;.:•r ;;.:•r sY ?r :r ?r :r ?r :•r?c :•r?c .............. ............: ?: ?r sk?r sk?r ::...:...::: ?: ?: ?: ?: ?::..:...:...:..::?r?: ?r?r>•; ?::.........., s..r s.., s..................:...:.........:...:...:........., s..r s..r ....... ....... ....... .......... ............................. ... ... ....... .. .. FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- 1 -------- 3.8433 --------- 0.3203 2 349.7279 0.3168 3 6.4284 0.2679 4 0.0402 0.1340 5 0.0000 0.0000 6 0.0279 0.1393 7 0.0000 0.0000 8 0.1875 0.7500 9 2.5680 0.2140 SNOW WATER 0.000 ?rkk:: ::•-?;?;?;?;?;k?rk?rk?r>;ir>;ir>;kirkir kir kir?r;.x..x>;?ririririrics.>.s.>. sY icic is is is is is it xs.xs. x:: ?r ?c ?r ?c ?r ?c ?r .r x .r x?: k?: sk x HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) irk DEVELOPED BY ENVIRONMENTAL LABORATORY USAE WATERWAYS EXPERIMENT STATION k'k *?r FOR USEPA RISK REDUCTION ENGINEERING LABORATORY .r .r .r .r .r .r .r sr s, xs, x?; kirk irk it?r?;?r?; ?rkkkkkkkkskk skkkkkkkkkki; ki; ki; kkkkkkkkk?rk?rk?rkkkkkkk?rk?rkkkick PRECIPITATION DATA FILE: c:\help\prj\lvsutton\slope\PREC.D4 TEMPERATURE DATA FILE: c:\help\pr3\lvsutton\slope\TEMP.D7 SOLAR RADIATION DATA FILE: c:\help\prj\lvsutton\slope\SOLRAD.D13 EVAPOTRANSPIRATION DATA: c:\help\prj\lvsutton\slope\EVAPFC.D11 SOIL AND DESIGN DATA FILE: c:\help\pr3\lvsutton\slope\ASH90F-1.D10 OUTPUT DATA FILE: c:\help\prj\lvsutton\slope\ASH90F-LOUT TIME: 16: 1 DATE: 8/ 4/2015 TITLE: L.V. Sutton Greenfield Landfill sY sY sY sY sY sY sYk irk irk s'r:'rir:'rir:'r irk sY k sYk :'rk irk irk :'rk i:k i:k is sY irk irk irkki:k is is kkkk ksY s'rk it it it it it irkkkkkkir ?r it ?r irkkkk NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM. LAYER 1 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.4570 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 2 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.04 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 3 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 6.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1991 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 4 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 30 THICKNESS = 1080.00 INCHES POROSITY = 0.5410 VOL/VOL FIELD CAPACITY = 0.1870 VOL/VOL WILTING POINT = 0.0470 VOL/VOL INITIAL SOIL WATER CONTENT = 0.1870 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.499999987000E-04 CM/SEC LAYER 5 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 24.00 INCHES POROSITY = 0.4570 VOL/VOL FIELD CAPACITY = 0.0830 VOL/VOL WILTING POINT = 0.0330 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0832 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.999999975000E-04 CM/SEC LAYER 6 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.30 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 7 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD LAYER 8 TYPE 2 - LATERAL DRAINAGE LAYER MATERIAL TEXTURE NUMBER 0 THICKNESS = 0.20 INCHES POROSITY = 0.8500 VOL/VOL FIELD CAPACITY = 0.0100 VOL/VOL WILTING POINT = 0.0050 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0100 VOL/VOL EFFECTIVE SAT. HYD. COND. = 1.19099998000 CM/SEC SLOPE = 2.00 PERCENT DRAINAGE LENGTH = 390.0 FEET LAYER 9 TYPE 4 - FLEXIBLE MEMBRANE LINER MATERIAL TEXTURE NUMBER 35 THICKNESS = 0.06 INCHES POROSITY = 0.0000 VOL/VOL FIELD CAPACITY = 0.0000 VOL/VOL WILTING POINT = 0.0000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.0000 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.199999996000E-12 CM/SEC FML PINHOLE DENSITY = 2.00 HOLES/ACRE FML INSTALLATION DEFECTS = 2.00 HOLES/ACRE FML PLACEMENT QUALITY = 3 - GOOD UPPER LIMIT OF EVAPORATIVE STORAGE LAYER 10 TYPE 3 - BARRIER SOIL LINER MATERIAL TEXTURE NUMBER 17 THICKNESS = 0.25 INCHES POROSITY = 0.7500 VOL/VOL FIELD CAPACITY = 0.7470 VOL/VOL WILTING POINT = 0.4000 VOL/VOL INITIAL SOIL WATER CONTENT = 0.7500 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.300000003000E-08 CM/SEC LAYER 11 TYPE 1 - VERTICAL PERCOLATION LAYER MATERIAL TEXTURE NUMBER 22 THICKNESS = 12.00 INCHES POROSITY = 0.4190 VOL/VOL FIELD CAPACITY = 0.3070 VOL/VOL WILTING POINT = 0.1800 VOL/VOL INITIAL SOIL WATER CONTENT = 0.2900 VOL/VOL EFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC GENERAL DESIGN AND EVAPORATIVE ZONE DATA ---------------------------------------- NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT SOIL DATA BASE USING SOIL TEXTURE # 3 WITH A FAIR STAND OF GRASS, A SURFACE SLOPE OF 33.% AND A SLOPE LENGTH OF 150. FEET. SCS RUNOFF CURVE NUMBER = 63.30 FRACTION OF AREA ALLOWING RUNOFF = 100.0 PERCENT AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 10.0 INCHES INITIAL WATER IN EVAPORATIVE ZONE = 4.570 INCHES UPPER LIMIT OF EVAPORATIVE STORAGE = 4.570 INCHES LOWER LIMIT OF EVAPORATIVE STORAGE = 0.330 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 219.826 INCHES TOTAL INITIAL WATER = 219.826 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR EVAPOTRANSPIRATION AND WEATHER DATA ----------------------------------- NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM SYNTHETICALLY Wilmington North Carolina USING STATION LATITUDE = 34.30 DEGREES MAXIMUM LEAF AREA INDEX = 2.00 FEB/AUG MAR/SEP -------------- START OF GROWING SEASON (JULIAN DATE) = 0 (INCHES) END OF GROWING SEASON (JULIAN DATE) = 367 FEB/AUG MAR/SEP -------------- EVAPORATIVE ZONE DEPTH = 10.0 INCHES AVERAGE ANNUAL WIND SPEED = 2.40 MPH AVERAGE 1ST QUARTER RELATIVE HUMIDITY = 68.60 6.67 AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 71.70 4.26 AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 78.80 6.58 AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 74.60 2.52 NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA FEB/AUG MAR/SEP -------------- NORMAL MEAN MONTHLY PRECIPITATION (INCHES) 49.10 54.30 JAN/JUL ------- FEB/AUG MAR/SEP -------------- APR/OCT ------- MAY/NOV ------- JUN/DEC ------- 2.23 3.34 4.14 4.04 3.69 5.29 6.67 9.71 4.03 2.75 4.26 3.78 NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING INCHES COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) JAN/JUL ------- FEB/AUG MAR/SEP -------------- APR/OCT ------- MAY/NOV JUN/DEC -------------- 48.00 49.10 54.30 63.70 71.80 76.80 80.60 77.90 73.70 65.00 52.00 51.50 NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING 1.64 COEFFICIENTS FOR CHARLESTON SOUTH CAROLINA 3.54 AND STATION LATITUDE = 34.30 DEGREES -- -- --- --- - -- -- AVERAGE MONTHLY ------------------------------------------------------------------------------- VALUES IN INCHES FOR YEARS 1 THROUGH 30 3AN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC PRECIPITATION ------------- TOTALS 1.64 3.60 4.45 4.16 3.54 4.83 6.58 10.78 4.05 2.52 3.89 3.55 STD. DEVIATIONS 1.17 1.58 1.99 2.59 1.99 2.61 3.03 4.57 2.29 2.32 2.06 1.84 RUNOFF TOTALS 0.498 1.472 1.880 1.155 0.377 0.396 0.832 4.512 0.879 0.668 1.400 1.847 STD. DEVIATIONS 0.967 1.421 1.677 1.630 0.901 0.760 22.6613 1.821 4.025 1.423 1.470 1.781 1.786 EVAPOTRANSPIRATION 19.3868 19.6831 19.0091 20.5959 22.4963 STD. DEVIATIONS ------------------ TOTALS 1.383 1.784 2.970 4.003 4.299 4.248 2.7397 4.776 4.900 3.664 2.034 1.259 1.212 STD. DEVIATIONS 0.222 0.193 0.232 0.345 1.151 1.208 0.0000 1.189 0.696 0.318 0.548 0.332 0.114 PERCOLATION/LEAKAGE THROUGH LAYER 2 0.0000 0.0000 0.0000 ------------------------------------ TOTALS 0.1100 0.0997 0.1088 0.0970 0.0844 0.0763 0.0832 0.0958 0.0940 0.0942 0.0978 0.1093 STD. DEVIATIONS 0.0029 0.0034 0.0029 0.0067 0.0104 0.0090 0.0119 0.0133 0.0088 0.0116 0.0104 0.0077 LATERAL DRAINAGE COLLECTED FROM LAYER 6 ---------------------------------------- TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 7 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0002 STD. DEVIATIONS 0.0000 0.0001 0.0001 0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0008 0.0010 LATERAL DRAINAGE COLLECTED FROM LAYER 8 ---------------------------------------- TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0002 STD. DEVIATIONS 0.0000 0.0001 0.0001 0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0008 0.0008 PERCOLATION/LEAKAGE THROUGH LAYER 10 ------------------------------------ TOTALS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 PERCOLATION/LEAKAGE THROUGH LAYER 11 ------------------------------------ TOTALS 0.0025 0.0029 0.0026 0.0029 0.0013 0.0001 0.0004 0.0015 0.0043 0.0034 0.0012 0.0011 STD. DEVIATIONS 0.0052 0.0069 0.0057 0.0127 0.0047 0.0005 0.0007 0.0025 0.0061 0.0055 0.0019 0.0018 ------------------------------------------------------------------------------- AVERAGES OF MONTHLY AVERAGED DAILY HEADS (INCHES) ------------------------------------------------------------------------------- DAILY AVERAGE HEAD ON TOP OF LAYER 2 ------------------------------------- AVERAGES 22.6613 22.5465 22.3966 20.4142 16.7510 15.4927 16.4958 19.3868 19.6831 19.0091 20.5959 22.4963 STD. DEVIATIONS 0.6803 0.8056 0.6593 1.6092 2.3866 2.1455 2.7397 3.0552 2.0942 2.6743 2.4807 1.7715 DAILY AVERAGE HEAD ON TOP OF LAYER 7 ------------------------------------- AVERAGES 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 DAILY AVERAGE HEAD ON TOP OF LAYER 9 PERCOLATION/LEAKAGE THROUGH ------------------------------------- AVERAGES 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 .r .c .r .c .r .c .r sr s, sr s, xi; kir kirk sr it i; it i; it 0.0000 itkkkkkkkskk skk 0.0000 skkkkkkkk>'; 0.0000 0.0000 k>'; k>'; kkkkkkkkir it it it 0.0001 it itkkkkkk 0.0001 kir kic ki: kick is AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------------- INCHES CU. FEET PERCENT ------------------- ------------- --------- PRECIPITATION 53.60 ( 9.125) 194554.7 100.00 RUNOFF 15.916 ( 7.8098) 57773.30 29.695 EVAPOTRANSPIRATION 36.530 ( 2.7508) 132605.53 68.158 PERCOLATION/LEAKAGE THROUGH 1.15038 ( 0.04223) 4175.882 2.14638 LAYER 2 AVERAGE HEAD ON TOP 19.827 ( 0.824) OF LAYER 2 LATERAL DRAINAGE COLLECTED 0.00002 ( 0.00008) 0.061 0.00003 FROM LAYER 6 PERCOLATION/LEAKAGE THROUGH 0.00057 ( 0.00194) 2.079 0.00107 LAYER 7 AVERAGE HEAD ON TOP 0.000 ( 0.000) OF LAYER 7 LATERAL DRAINAGE COLLECTED 0.00054 ( 0.00177) 1.963 0.00101 FROM LAYER 8 PERCOLATION/LEAKAGE THROUGH 0.00000 ( 0.00000) 0.003 0.00000 LAYER 10 AVERAGE HEAD ON TOP 0.000 ( 0.000) OF LAYER 9 PERCOLATION/LEAKAGE THROUGH 0.02421 ( 0.03034) 87.884 0.04517 LAYER 11 CHANGE IN WATER STORAGE 1.126 ( ............................................................. ............:: k k is s; i::, ..............., ..., .....................................................r 0.4577) ................................................. ...r ...r ...r 4085.97 .............................................. 2.100 PEAK DAILY VALUES FOR YEARS 1 THROUGH 30 ------------------------------------------------------------------------ (INCHES) (CU. FT.) PRECIPITATION 5.25 19057.500 RUNOFF 5.069 18399.8203 PERCOLATION/LEAKAGE THROUGH LAYER 2 0.003734 13.55547 AVERAGE HEAD ON TOP OF LAYER 2 24.000 DRAINAGE COLLECTED FROM LAYER 6 0.00005 0.16564 PERCOLATION/LEAKAGE THROUGH LAYER 7 0.000816 2.96325 AVERAGE HEAD ON TOP OF LAYER 7 0.000 MAXIMUM HEAD ON TOP OF LAYER 7 0.011 LOCATION OF MAXIMUM HEAD IN LAYER 6 (DISTANCE FROM DRAIN) 0.0 FEET DRAINAGE COLLECTED FROM LAYER 8 0.00056 2.03301 PERCOLATION/LEAKAGE THROUGH LAYER 10 0.000000 0.00003 AVERAGE HEAD ON TOP OF LAYER 9 0.002 MAXIMUM HEAD ON TOP OF LAYER 9 0.003 LOCATION OF MAXIMUM HEAD IN LAYER 8 (DISTANCE FROM DRAIN) 0.0 FEET PERCOLATION/LEAKAGE THROUGH LAYER 11 0.003073 11.15487 SNOW WATER 1.16 4211.9434 MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4570 MINIMUM VEG. SOIL WATER (VOL/VOL) 0.0330 Maximum heads are computed using MCEnroe's equations. Reference: Maximum Saturated Depth over Landfill Liner by Bruce M. MCEnroe, University of Kansas ASCE journal of Environmental Engineering Vol. 119, No. 2, March 1993, pp. 262-270. ................................ FINAL WATER STORAGE AT END OF YEAR 30 ---------------------------------------------------------------------- LAYER (INCHES) (VOL/VOL) ----- -------- --------- 1 10.9679 0.4570 2 0.0000 0.0000 3 1.2140 0.2023 4 234.4497 0.2171 5 4.0158 0.1673 6 0.0030 0.0100 7 0.0000 0.0000 8 0.0029 0.0147 9 0.0000 0.0000 10 0.1875 0.7500 11 2.7536 0.2295 SNOW WATER 0.000 k,�k,�kk:YXX'; kiekkkkkkkkkkkkkkk:':�;:':�;:':k�•ki.•ki::':>:Xkkkkkkkkki: ki: ki: ki: kkkkkkkk;; k;;kk ��kkk;; k;; kkkkkk:': :': is kkkk::'k ::'k ::'k kkkkkkkkkkkkkkkkkkkXi: is XiskXkXkXkkkkkkkkkXkXkXkkiskkkXXXXXkkkk