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Three leachate evaporation impoundments are currently planned for the site. <br /> WMU F North is located in the southwest region of the existing Forward Landfill <br /> site,just north of the South Branch. It was constructed in 1999 and currently <br /> provides containment for leachate from the active portions of the existing Forward <br /> Landfill. A second Class II leachate impoundment, WMU F South is planned to be <br /> constructed in the southwest region of the existing Forward Landfill, south of the <br /> South Branch to service Phase 10. A third Class II leachate impoundment is <br /> planned to be constructed.outside the southwest edge of the existing Austin Road <br /> Landfill to service Phases 1 to 9. <br /> WMU F North is a double lined unit and contains a.,GCL,,overlain.by a 60-md <br /> HDPE geomembrane, a geonet, and an additional 60-mil HDPE geomembrane. <br /> The leachate impoundment was sized based on=bactua4,1ea6ate eration <br /> records from 1991 to 1997 and has a design capacity of°approximately 3.5 <br /> million gallons. <br /> If during the service life of the landfill, the demand on the leachate <br /> impoundments exceeds capacity, Forward will impiemen't'°an aiternative'-teach`ate <br /> management plan. The leachate impoundments are intended to serve as a <br /> primary mechanism for disposal of collected leachate. However, the <br /> impoundments maybe-supplemented by other.,disposal..,netho.ds during,,peak <br /> years of operation, if necessary. Leachate in excess of the impoundment's <br /> "eapacity will either'be'pumpe'd to temporary om:site"tan'ks orftcked for off=site <br /> disposal at the City of Stockton Municipal Utility District wastewater treatment <br /> plant located at 2500 North Navy Drive in Stockton. Leachate stored in the <br /> temporary on-site tanks.may be released back into the impoundments at a later <br /> date. Discharge of leachate or any other liquids to the landfill will not be <br /> performed. <br /> 7.1.2 LEACHATE MONITORING <br /> Leachate monitoring and sampling is completed at the existing Forward Landfill in <br /> compliance with WDR Order No. 97-141. Since the existing Austin Road Landfill <br /> is unlined, no leachate monitoring is performed at the site. Future WMUs at the <br /> Forward Landfill will be constructed with an integrated LCRS that will be <br /> monitored as part of the facility's new WDRs. <br /> Forward Landfill JTD 7-2 <br /> L:\Allied\2000.193\Reports\finaljtd:Sec-7.0:08/20/01 BRYAN A.STIRRAT S ASSOCIATES <br />