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4.0 WASTE MANAGEMENT UNITS <br /> 4.1 EXISTING AND PLANNED FACILITIES <br /> The Forward Landfill facility consists of waste management units (WMUs), a <br /> transfer station/materials recovery facility, soil borrow areas, composting areas, <br /> and storage and support areas. Future permitted facilities will include additional <br /> WMUs, a wildlife preserve and floodplain and relocation of existing scales/scale <br /> house. Potential facilities that may also be constructed include entrance and <br /> administration facilities and a temporary hazardous materials storage locker. <br /> 4.1.1 PERMITTED WASTE MANAGEMENT UNITS <br /> Existing Units <br /> The existing Forward Landfill consists of several WMUs, as shown on Figure 9. <br /> The labeling of the WMUs has occurred in conjunction with site development, <br /> but is somewhat complicated by several overlapping units. <br /> The first WMU established at the Forward Landfill was an approximately 8-acre <br /> area labeled WMU A. WMU A is located on the eastern side of the site, near the <br /> main entrance facility. The unit consists of four trenches constructed in a north <br /> to south orientation, with a compacted clay liner and dendritic LCRS in each <br /> trench. Hazardous and designated wastes, consisting primarily of plant process <br /> waste, were disposed of in WMU A from 1979 through 1984. The unit was <br /> closed in 1989 and has received postclosure permits from both the RWQCB and <br /> DTSC. <br /> WMUs B and B-North are Class III landfills encompassing a combined area of <br /> approximately 15 acres. The waste in WMU B consists primarily of <br /> nonhazardous solid wastes while WMU B-North contains inert wastes. WMUs B <br /> and B-North began operations in the late 1970s. WMU B-North is temporarily <br /> inactive and WMU B is near capacity. <br /> WMU C, an approximately 4-acre Class III unit overlies the south end of Trench <br /> 4 in WMU A. Because WMU A is a Class I unit, a compacted clay dike was <br /> Forward Landfill JTD 4-1 <br /> J:\Allied\Forward\)TD Amendment\January2006 JTD AmendmentUTD Sec 4 012506 Acceptdoc: BRYAN A.STIRRAT 6 ASSOCIATES <br /> 05/24/02;Amendment No. 1: 1/27/2006 <br />