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•r <br /> INFORMATION SKEET <br /> WASTE DISCHARGE REQUIREMENTS <br /> FORWARD LANDFILL <br /> FORWARD INC. AND ALLIED WASTE INDUSTRIES <br /> SAN JOAQUIN, COUNTY <br /> Allied Waste Industries as Forward Inc. owns and operates Forward and Austin Road Landfills, <br /> two adjacent facilities approximately seven miles southeast of Stockton on Austin Road. The <br /> discharger has requested revised Waste Discharge Requirements that combine the two facilities. <br /> The combined facility will be approximately 567 acres and will include both existing and <br /> planned waste management units. <br /> New waste management units will be designed and constructed for the discharge of designated <br /> waste. The liner system for new units consists of a single composite base liner composed of <br /> from bottom to top: a prepared subgrade, two feet of compacted clay with a hydraulic <br /> conductivity of 10"7 or less, 60 mil HDPE, one-foot gravel drainage layer, filter fabric, and one- <br /> foot operations layer. Double composite liners will be installed under landfill sumps; and a <br /> electric leak test will be conducted over the entire base liner after installation of the operations <br /> layer. <br /> Implementation of a corrective action plan to cleanup a groundwater contaminant plume at <br /> Austin Road Landfill is ongoing. The contamination is characterized by the presence of volatile <br /> organic compounds (VOCs) including but not limited to vinyl chloride, tetrachloroethane, <br /> trichloroethane, and cis-l,2-dichloroethane. The Corrective Actions include installation of a <br /> landfill cover on the unlined waste unit, improvements to the landfill gas extraction system and <br /> groundwater recharge. Additionally, improvements will be made to the monitor well system; <br /> and if groundwater contamination is not contained or if significant progress toward cleanup is <br /> not made additional extraction wells will be brought on line. <br />