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FORWARD LANDFILL NON-WATER CORRECTIVE ACTION PLAN Forward Unit The first WMU established at the original Forward Landfill was an approximately 8-acre Class I disposal area labeled WMU A, located on the northeastern side of the site, near the main facility entrance. Hazardous and designated wastes, consisting primarily of industrial plant process waste, were disposed of in WMU A from 1979 through 1984, and the unit was closed in 1989. WMUs B and B-North are Class III units encompassing a combined area of approximately 15 acres. The waste in WMU B consists primarily of non-hazardous solid wastes, while WMU B- North contains inert wastes. WMUs B and B-North began operations in the late 1970s. WMU B-North is temporarily inactive and WMU B was near capacity in February 2008. WMU C, an approximately 4-acre Class III unit, overlies the south end of WMU A. Because WMU A is a Class I unit, a compacted clay dike was constructed on the north end to separate the hazardous WMU A wastes from the non-hazardous WMU C wastes. In 1994, the western portion of the waste in WMU C was overlain by a liner and LCRS, and municipal solid waste and designated wastes were placed over the liner. Municipal solid waste was placed over the portions not underlain by an interface liner and LCRS. ® WMU D comprises a significant portion of the western portion of the site, north of the South Fork of South Littlejohns Creek. Operating WMUs in this area are permitted to receive designated wastes, and were constructed to meet Class II regulatory requirements for base liners. WMU E is an ash fill, also known as the Eastern Ash Disposal Pit, which was constructed in 1987 at 4 acres and was expanded to 6 acres in 1992. A liner was placed over the northern, eastern, and western sides of WMU E in 1999 and 2000 to separate the ash from designated waste placed above it. A final cover was placed on the southern side in 1999. WMU F North, constructed in 1999, is an approximately 1-acre leachate impoundment located just north of the South Fork of South Littlejohns Creek on the western side of the site. The leachate impoundment was sized based on actual leachate generation records from 1991 to 1997 and has a design capacity of approximately 3.5 million gallons. Soil treatment and sludge drying is permitted in WMU G. WMU G is divided into G-North and G-South, located north and south of the South Fork of South Littlejohns Creek, respectively. The WMU G units occupy the same areas as WMUs D and Future H. The WMU D units have replaced WMU G-North. WMU Future H will replace the WMU G-South(currently the site of the materials recovery facility) to accommodate waste disposal. Forward, Inc. has not treated soils or dried sludge during the last several years. M:\2011-012"WFA REPORT.DOCX 5 Geo-Logic Associates