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HomeMy WebLinkAbout7404_PittCoCDRecycle_20160928_PTCApplication_DIN26750 Since 1975, servicing clients worldwide ENGINEERING ARCHITECTURE SURVEYING TECHNOLOGY Corporate Office 324 Evans St Greenville NC 27858 Tel 252.758.3746 Fax 252.830.3954 Raleigh Office 2300 Rexwoods Dr Suite 300 Raleigh NC 27607 Tel 919.784.9330 Fax 919.784.9331 www.eastgroup.com December 22, 2015 Ms. Patricia M. (Pat) Backus, P.E. NC Department of Environment and Natural Resources Division of Waste Management – Solid Waste Section 217 West Jones Street 1646 Mail Service Center Raleigh, NC 27699-1646 Delivered by Email: pat.backus@ncdenr.gov Re: Approval of Proposed Changes to Pitt County Construction & Demolition (C&D) Recycling Program - New Sort Line Dear Ms. Backus: Per our previous conversations, please find the attached documents regarding a new sort line for the C&D recycling program at the Pitt County Transfer Station:  Site Plan  Proposed Amendment to the Operations Plan  Project Narrative We request your review and approval of the new C&D recycling sort line. Please let us know if additional information is needed or would be helpful to you. Sincerely, Todd Tripp Todd Tripp, PE Sr. Civil Engineer PITT COUNTY, NORTH CAROLINA WASTE HANDLING FACILITY (TRANSFER STATION) Permit No. 74-04T NARRATIVE NEW CONSTRUCTION AND DEMOLITION DEBRIS RECYCLING EQUIPMENT & SORT LINE DECEMBER 22, 2015 December 22, 2015 For: Division of Solid Waste Management Solid Waste Section Permitting Branch 1646 Mail Service Center Raleigh, North Carolina 27699-1646 By: The East Group For Pitt County Solid Waste & Recycling Department 3025 Landfill Road Greenville, North Carolina 27834 Narrative – New C&D Recycling Sort Line December 21, 2015 Page 2 of 5 Existing Construction and Demolition (C&D) Recycling Operation: C&D materials are currently being recycled at the Pitt County Waste Handling Facility. A dedicated area to the south of Buildings 4 and 5 are being utilized for recycling purposes. The existing recycling area includes a 9,000 square foot slab with a 150-foot long retaining wall for loading out. C&D material is spread on the slab and sorted for metals, clean wood, cardboard and rigid plastics. The non-recycled materials are loaded at the retaining wall shown on the Site Plan and hauled to EJE Recycling. The recyclables are hauled away at frequent intervals to minimize quantities on the site. Certain C&D generated materials, if delivered in segregated loads, are directed to recycling containers or bulk piles as appropriate. These segregated materials include: Clean Wood – Pallets and other clean unpainted timber is loaded into open top trailers or containers and hauled to the western stockpile in the old borrow pit area for grinding for the wood pellet boiler fuel market. Asphalt Shingles – Shingles are collected for shipment to the Barnhill Contracting Company asphalt paving facility in Kinston, NC. Carpets – Carpets are collected for pickup by Wellman Plastics in South Carolina. An area at the southern end of the C&D recycling area concrete pad has been designated for receipt of the carpet. As materials are gathered they are collected and loaded into a 53-foot trailer maintained on site for that purpose. Rigid Plastics and Cardboard- These items are shipped to East Carolina Vocational Center located on North Greene Street in Greenville, NC C&D Program Needs The C&D facility requires dumping the material on the slab and spreading to allow for manual picking. The methodology has been effective in removing significant tonnage from the waste stream but it does create concerns relative to safety and efficiency. At times of high flow recyclable tonnage can be missed because of the need to process materials and keep pace with delivery of debris. Pitt County management desires the higher capture rate and safety advantages of a dedicated sort line. It is projected that perhaps 50% of the current 17,600 tons of C&D Debris delivered annually to the facility may be recycled with a dedicated sort line. This would be a very large increase in recycling for the C&D Program and would also result in avoided tipping fees for C&D disposal. Narrative – New C&D Recycling Sort Line December 21, 2015 Page 3 of 5 Proposed Upgrades The Construction and Demolition Debris (C&D) recycling area is being upgraded with a new sort line. Segregated materials such as carpets, pallets & clean wood, clean concrete and masonry rubble, tires, shingles, and metals will bypass the sort line and be directed to specific receptacles set up for that purpose in the same way as is presently done. Mixed recyclables shall be directed to the new 8,800 square foot (approximate) C&D infeed sort building. The building is to be equipped with an inclined belt conveyor with variable speed drive. All incoming C&D debris is to be housed under the roof of the infeed sort building. Also within the building a new Finger Screen will be provided to segregate materials smaller than 2.5 inches. The fragment of the C&D stream smaller than 2.5 inches is to be delivered by materials conveyor to an outdoor pile located on the existing concrete pad for loading out to a C&D Landfill such as the EJE Recycling Facility near Pactolus, NC. The smaller fraction may also be passed through a magnet for recovery and recycling of metals. From the Finger Screen the larger material will travel out of the infeed building to the sort line. The sort line is elevated with 8 stations for recyclables. It is not feasible at present to provide a dedicated building for the sort line but it is equipped with an overhead canopy roof for protection of the sort staff. The project will include the following major components:  Building and Pavement Improvements: A 110-foot by 80-foot building with a 26-foot minimum eve height is recommended to serve as the infeed building. The purpose of this roofed structure is to provide protection from the elements for the recycling personnel and the infeed and sorting equipment. The exclusion of precipitation and runoff from the debris is important as it prevents the generation of leachate. The building would be a pre-engineered shell building with the required electrical, ventilation, and lighting provided. The foot-print of the building is designed to provide temporary flow equalization of incoming materials for processing and to provide a working area to load the infeed conveyor. The intent is to clear the building by the end of each day. The width of the building will be sufficient to provide multiple incoming material streams. A separate lane is to be provided for do-it-yourself, residential derived materials on non- commercial vehicles. Two lanes are provided for commercial contractor trucks with the purpose of separating to the extent possible the professional repeat commercial traffic from the occasional residential users in order to maximize traffic safety and efficiency. An area is also provided sorting for materials determined to be non-recyclable. Such non-recyclable materials would be pushed to the outer edge of the roofed work area (See Site Plan) where they could be loaded to the reject area or reject containers at the rear of the picking line. Pavement would be added as shown on the site plan to provide all weather approaches for incoming traffic and provide a stable work surface to access the hoppers under the picking line and the reject area.  In-Feed Conveyor: A metal belt, inclined in-feed conveyor is to be provided within the C&D Recycling building. The conveyor is expected to be 72 inches wide and provide an approximate 18-foot lift so that the existing rubber-tired loader can load at the lower end of the conveyor without the need for reaching the picking line elevation. The conveyor is variable speed drive to maintain a relatively stable infeed rate to the finger screen. Depending on the final layout, the conveyor may be a direct inline feed to the finger screen or it may be set at a 90 degree angle if needed for improved loader access. The intention is that items too large to be sorted on the Narrative – New C&D Recycling Sort Line December 21, 2015 Page 4 of 5 picking line will be sorted to the reject side of the building rather than being placed on the infeed conveyor.  Vibratory Finger Screen: A vibrating, balanced finger screen is proposed for the facility. The finer particles of C&D do not contain components that have been identified as feasible recycling commodities; therefore, the screen size is proposed to be approximately 2.5 inches. This may capture metal cans for recycling if present in the C&D waste stream. Since this facility is within a short distance of the Transfer Station office, the screen is proposed to be of the balanced type. The screen should be approximately 66 inches wide with a length of approximately 32 feet. The screen will be located within the in-feed building to keep the unsorted materials out of the elements and to keep the materials being screened dry to the extent practical.  Picking Line: An elevated picking platform and structure is to be provided with eight 36-inch by 48-inch drop chutes (4 on each side). The platform is elevated to provide vertical room for the commodity containers below the materials chutes. The picking line extends out the back of the infeed building and is provided with a vendor manufactured canopy system from protection of the workers from the elements. The proposed commodity bins for sorting include: clean wood, clean concrete, cardboard, rigid plastics, metals, carpet, gypsum wall board, and shingles. The stations utilized may vary depending on the C&D content and the recycling market.  Fines Conveyor: Materials smaller than the finger screen slot size (>2.5 inches) will drop to a fines conveyor that will deliver the materials to the Reject Loading Area which is on the existing concrete slab next to the existing retaining wall loading (See Site Plan). Depending on budget and Figure 1-Vibratory Finger Screen Figure 2- Example Picking Line Narrative – New C&D Recycling Sort Line December 21, 2015 Page 5 of 5 observation of the screened materials, the County may also purchase a magnet to recover additional metals from the fines. Operations Changes The Construction and Demolition Debris recycling facility will be manned by the personnel currently engaged in C&D sorting operations included in the numbers given in Section M of the Operations Plan. Additional personnel as needed on the sort line will be provided under contract to allow for adjustments to be made as-needed until the new sorting regime is fully developed. Materials handling equipment currently engaged in C&D sorting and recycling will continue to perform recycling operations but tasks will be adjusted to serve the new sort line. Approvals Required The Construction and Demolition Debris recycling facility is expected to require the approval of the Solid Waste Section and also requires a City of Greenville Site Plan Approval. While an Erosion & Sedimentation Control Plan Approval is required, no Stormwater Permit is required by the City of Greenville. Schedule The project is intended to receive approval by February 2016 so that bidding may begin. The intention is to be in a position to issue a Notice to Proceed at the conclusion of the bidding and negotiation phase by the commencement of the 2016/2017 Fiscal Year on July 1, 2016. The County would expect full completion by the end of the calendar year, December 2016. Mangement of Recylcing During Interim Period During the interim period while design and approval is underway, the County will continue using the present dump spread and sort regime. During construction, alternate locations may be needed for some of the operations. Additional sorting area is available at the tire scrapping and shingle recycling operations sites immediately to the west. In addition, recycling may be able to proceed at the current site during much of the construction phase.