Selected Landfill and Closure Projects

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1 Sampson ounty Disposal, LL Roseboro, North arolina Present GNRA provided an engineering review of the site as part of the purchase of this private landfill, which included two separate Subtitle D MSW landfill units. Sampson ounty Landfill (2001) GNRA designed, permitted, and provided construction phase engineering quality assurance services during closure construction for the original 40- acre Subtitle D disposal unit at this facility. The project, completed in 2002, included an active landfill gas collection and recovery system, a geomembrane cap, and surface and subsurface drainage systems. Final over 2005 GNRA provided engineering design and permitting, and construction engineering services for all but the first two cells at this 200-acre facility. Innovations include the permitting and construction of a gravity groundwater intercept system to lower the water table beneath the landfill - providing a significant savings to the owner in the form of additional soil borrow and airspace. GNRA has designed the closure system for the entire landfill. Sampson ounty Disposal, LL. Mr. Troy Mitchell, Landfill Manager (910) Landfill Lexington, South arolina GNRA re-designed the closure system to replace the badly eroded cover system on the EPA Superfund project. GNRA 321 Landfill Landfill provided design, construction engineering and quality assurance on the construction of the closure and the remediation system, and continues to provide engineering and maintenance services relating to the project. Lexington ounty Public Works Department Mr. John Fechtel (803)

2 Atlantic Waste Disposal Landfill Waverly (Sussex ounty), VA GNRA designed and permitted the closure plan for the 400-acre Subtitle D facility, including all storm water control features, a leachate recirculation system and a passive landfill gas (LFG) system. GNRA provided engineering and construction services during the initial phase of closure at the site. GNRA designed, permitted, and provided engineering services during construction for ells 3 through 11 of this facility. GNRA also provided engineering and construction quality assurance services during the construction of both ells 3 (17 acres) and 4 (25-acres). Atlantic Waste Disposal, Inc. Mr. Mike Kearns, Site Manager (804) Kness Landfill McKean ounty, PA 1996-Present GNRA has provided numerous design, permitting, and construction-related services to the McKean ounty Solid Waste Authority (MSWA) associated with this Subtitle D MSW landfill, leachate treatment plant, and recycling center. This work has included final cover construction, expansion design and permitting, waste tire remediation, landfill gas management, rail site design, and liner/leachate collection system installations. McKean ounty Solid Waste Authority Mr. Dick Tyger, Landfill Manager (814) International Paper - Riegelwood Mill Riegelwood, N 2001-Present GNRA designed and permitted a new, double-lined 13.5-acre industrial landfill, completed in GNRA designed the closure system for the existing, unlined 59-acre footprint landfill at the mill. The closure uses lightweight mill-byproducts (such as wood waste and ash) to bridge over the soft material in the landfill. Phase 1 and 2 are completed, and Phase 3 should International Paper - Riegelwood (2004)

3 be completed in International Paper - Riegelwood Mill Edward J. Kreul, Manager, Environment & Health (910) International Paper - Franklin Mill Franklin, Virginia 2002-Present GNRA redesigned and re-permitted the final closure over the landfill to eliminate expensive clay compaction and unnecessary construction inspection requirements. An alternative final cover was permitted for this landfill. GNRA designed and permitted a geomembrane lined expansion (Phase 3) to the mill s current clay lined landfill. International Paper - Franklin (2003) International Paper - Franklin Mill Ellen W. obb, Senior Environmental Engineer (757) Johnston ounty MSW Landfill Johnston ounty, N 1998-Present GNRA staff designed and permitted a leachate recirculation system for this facility, which included a redesign of an existing leachate collection system GNRA staff designed, permitted, and provided engineering and construction quality assurance services during construction of a double-lined piggyback landfill that closed an unlined landfill with the liner system of a new cell. Johnston ounty Piggyback Landfill (2001) Johnston ounty Department of Public Utilities Mr. Tim Broome, P.E., Director (919)

4 First Piedmont Landfill Danville, Virginia Present GNRA designed a piggyback liner system to join two existing industrial solid waste landfill cells. Services included load tests to evaluate the compressibility, evaluation of settlement, and the design of all landfill liner/collector/closure components. GNRA designed the final cover system and its drainage system. First Piedmont Landfill Tom Wade, Landfill Manager (434) Other Landfill Projects Robeson ounty MSW Landfill Robeson ounty, N 1999-Present GNRA staff designed, permitted, and provided engineering and construction quality assurance services during construction for Phase 3 (13-acres), a lateral expansion of this Subtitle D with an alternative liner system. Robeson ounty Mr. urt Hardin, Assistant Solid Waste Director (910) Kersey Valley MSW Landfill High Point, North arolina Present GNRA provided peer review of the original site design package for Phase 1 (16-acres) of a lined Subtitle-D municipal solid waste landfill, and evaluated the extent and risk of constructing over a previously undetected abandoned gold mine. GNRA designed, permitted, and provided engineering services during construction for Phases 2 and 3 (12-acres each) of this facility. ity of High Point, Department of Public Services Mr. hris Thompson, P.E., Assistant Director (336)

5 Davidson ounty MSW Landfill Lexington, North arolina Present GNRA designed, permitted, and provided engineering and construction quality assurance services during construction for Phase 1 of this site s &D landfill unit, which is currently operational. GNRA is currently designing and permitting a 100-acre MSW landfill expansion (Phase 2) of this facility. Smith Gap Regional Landfill (Phase III-IV) Davidson ounty Integrated Solid Waste Management Mr. harley Brushwood, Director (336) Smith Gap Regional MSW Landfill Roanoke, VA 1994-Present GNRA staff co-designed, permitted, and provided engineering and QA services during construction for Phase II (13-acres) and Phases III/IV (8-acres) of this Subtitle D facility, which are currently in operation. GNRA is recently completed the design of Phases V-X (50-acres) of this facility including the design of a final cover system for all phases of the landfill. This expansion will provide over 30- years additional life to the facility. This work has been in partnership with Hayes, Seay, Mattern & Mattern (HSMM) of Roanoke. Progress Energy - arolinas Person ounty, N Present GNRA has designed and permitted a lined expansion of the existing industrial landfill at the Progress Energy coal-fueled electricity generating plant, provided construction engineering and QA for Phases 1, 2A and 2B. Gary W. Ahlberg, P.E. Progress Energy (910) L. Stan Morton, apital Projects Manager (336)

6 Landfill losure Projects GNRA has designed and permitted numerous landfill closures for both lined and unlined landfills. The following is a list of GNRA s landfill closure projects which have been constructed to date: Sampson ounty MSW Landfill, , Roseboro, N Atlantic Waste Disposal MSW Landfill, , 2002 Waverly, VA Kness Landfill, McKean ounty, PA IP - Riegelwood Mill Industrial Landfill, 2003-Present - Riegelwood, N 1. IP - Franklin Mill Industrial Landfill, Franklin, VA Scotland ounty MSW Landfill, Laurinburg, N Johnston ounty MSW Landfill, Smithfield, N Rutherford ounty entral MSW Landfill, Rutherfordton, N Highway 321 Superfund MSW Landfill, Lexington ounty, S Halifax ounty MSW Landfill, 1998 Halifax ounty, N Holston Industrial Landfill, Mead Paper, Kingsport, TN Davidson ounty Holly Grove MSW Landfill, 1997 Lexington, N Laurel Mill Industrial Landfill, Mead Paper, South Lee, MA Piggyback Landfill Designs GNRA is also one of the few firms to have designed and permitted piggyback landfills (lined landfill units over unlined landfill units) in the region. Piggyback landfills designed include the following: Johnston ounty, North arolina (see project description above) Winston-Salem, North arolina (for HDR Engineering) Republic Waste edar Hill Landfill - Alabama (for Hodges, Harbin, Newberry, & Tribble) First Piedmont Landfill, Virginia The Winston-Salem and Johnston ounty projects were the first piggyback landfills to be constructed in North arolina. Alternative Liner Designs GNRA has permitted alternative liner systems in five states to date. GNRA was instrumental in preparing the N-SWANA white paper on alternative liners and the subsequent approval of alternative liners in North arolina. A list of references will gladly be provided by request.