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WASTE DISCHARGE REQUIREMENTSORDER NO. R5-2003-0020 -12- ` FOR COUNTY OF SAN JOAQUIN FOR CONSTRUCTION, OPERATION, CLOSURE AND EVALUATION MONITORING FOOTHILL SANITARY LANDFILL, MUNICIPAL SANITARY LANDFILL SAN JOAQUIN COUNTY 3. The waste discharged to the initial two feet of all new waste management units or any expansion of the existing waste management unit, as measured from the top of the operations layer of the liner system, shall consist only of "packer waste," waste delivered in trailers from waste transfer stations, or other waste that is free of objects excluding that would pose a danger of physical damage to the liner system. 4. Landfill leachate and/or gas condensate fluids derived from the Foothill Landfill's collection and containment systems shall be discharged to a Module equipped with a composite liner containment system which meets the requirements for both liners and leachate collection and removal systems under D. Construction Specifications. Therefore, Module "I" is restricted from receiving these fluids. 5. The depth of fluid over any portion of the leachate collection and removal system shall not exceed 30 cm (—1 foot). The leachate collection sump may be designed to include a small limited area for the leachate removal pump where the fluid depth may exceed 30 cm. The leachate removal pump sump can be no larger or contain a fluid depth greater than the minimum needed for efficient pump operation. C. FACILITY SPECIFICATIONS 1. The Discharger shall, in a timely manner, remove and relocate any wastes discharged at this facility in violation of this Order. 2. The Discharger shall immediately notify the Board of any flooding, unpermitted discharge of waste off-site, equipment failure, slope failure, or other change in site conditions that could impair the integrity of waste or leachate containment facilities or precipitation and drainage control structures. 3. Water used for facility maintenance shall be limited to the minimum amount necessary for dust control and construction. 4. The Discharger shall maintain in good working order any facility, control system, or monitoring device installed to achieve compliance with the waste discharge requirements. 5. Methane and other landfill gases shall be adequately vented, removed from the Unit, or otherwise controlled, as needed, to prevent adverse health effects, nuisance conditions, or the impairment of the beneficial uses of surface water or groundwater due to migration through the unsaturated zone. 6. Surface drainage within the waste management facility either shall be contained on-site or be discharged in accordance with applicable storm water regulations.