ARCHIVED REPORTS_2003_5 - Laserfiche WebLink

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SECTION I Introduction The Forward Landfill is an active, permitted Class II and Class III disposal facility that is owned and operated by Forward, Inc. (Forward), a subsidiary of Allied Waste, Inc. The landfill is located approximately seven (7)miles southeast of the City of Stockton, adjacent to the City of Stockton Landfill in San Joaquin County. This report presents the design and construction documents for the development of Waste Management Unit (WMU) FU-03 at the Forward Landfill. The location of WMU FU-03 is shown on the Site Plan (see the Construction Drawings in Appendix A). As shown on the Site Plan, WMU FU- 03 occupies the portion of the site south of the former Austin Road landfill and just east of the western property boundary, in a portion of the area formerly known as the Austin Road Landfill borrow pit. The design and construction documents for WMU FU-03 and WMU F-West leachate pond and desilting basin at the most westerly portion of the site were prepared in accordance with Forward's Waste Discharge Requirements (WDR Order No. R5-2003-0049) as well as applicable regulations. The applicable state regulations include California Code of Regulations (CCR), Title 27, Division 2 (Title 27). The federal regulations are incorporated in 40 Code of Federal Regulations (CFR), Parts 257 and 258 (Subtitle D). Some of the provisions of particular importance regarding the design include: • The WMU FU-03 liner and leachate collection and removal system (LCRS) design conform to the prescriptive standards of both Title 27 and Subtitle D by using a composite liner and blanket LCRS. • WMU FU-03 has been designed to control inundation, washout, erosion, and slope failure resulting from flooding caused by a 24-hour storm with a 1,000-year return period. • WMU FU-03 has been designed to withstand the Maximum Credible Earthquake (MCE) without damaging the liner or the leachate control systems. • Seismic studies have indicated that the Forward Landfill site is not located within 200 feet of a Holocene aged fault (GeoSyntec, January 2001) and therefore complies with the regulatory provision regarding active faults. • The WMU F-West leachate storage basin has been designed as a Class I1 liquid containment system. This system has been designed similar to the existing permitted WMU F-North leachate surface impoundment basin, located at the southwest corner of the Forward Landfill, north of Little John's Creek. • The desilting basin has been designed to fit the maximum space available between the permitted refuse footprint and the adjacent property. The base liner for WMU FU-03 will encompass approximately 6 acres and will extend approximately 650 feet in the north-south dimension and 410 feet in the east-west dimension. The base of WMU FU-03 will be approximately 25 feet below existing ground surface. A composite lining system consisting of a 2-foot-thick clay liner overlain by a 60-mil, high-density polyethylene(HDPE) geomernbrane, and LCRS consisting of I foot of granular drainage material will be constructed on the FORWARD LANDFILL WMU F-03 ANDT-WEST DESIGN REPORT 1-fl