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WASTE DISCHARGE REQUIREMENTS <br /> WASTE MANAGEMENT OF NORTH AMERICA INCORPORATED <br /> FOOTHILL SANITARY LANDFILL INCORPORATED <br /> FOOTHILL SANITARY LANDFILL FACILITY <br /> CLASS III LANDFILL <br /> SAN JOAQUIN COUNTY <br /> 6. Prior to the discharge of wastes to a WMU, all wells within 500 feet <br /> of the unit shall have sanitary seals which meet the requirements of <br /> the San Joaquin County Local Health District or shall be properly <br /> abandoned. A record of the sealing and/or abandonment of such wells <br /> shall be sent to the Board and to the State Department of Water <br /> Resources. <br /> 7. Waste management units shall be designed, constructed, and operated to <br /> prevent inundation or washout due to floods with a 100-year return <br /> period. Class III landfill units and related containment structures <br /> shall be constructed and maintained to prevent, to the greatest extent <br /> possible, ponding, infiltration, inundation, erosion, slope failure, <br /> washout, and overtopping under 100-year, 24-hour precipitation <br /> conditions. <br /> 8. Precipitation and drainage control systems shall be designed and <br /> constructed to accommodate the anticipated volume of precipitation and <br /> peak flows from surface runoff under 100-year, 24-hour precipitation <br /> conditions. <br /> 9. Surface drainage from tributary areas and internal site drainage from <br /> surface or subsurface sources shall not contact or percolate through <br /> wastes. <br /> 10. Annually, prior to the anticipated rainy season, any necessary erosion <br /> control measures shall be implemented, and any necessary construction, <br /> maintenance, or repairs of precipitation and drainage control <br /> facilities shall be completed to prevent erosion or flooding of the <br /> facility and to prevent surface drainage from contacting or <br /> percolating through wastes. <br /> 11. A one-foot thickness of compacted soil will be maintained over all <br /> disposal areas not to be used for greater than 180 days, to minimize <br /> percolation through waste. The active disposal area shall be confined <br /> to the smallest area practicable, based on the anticipated quantity of <br /> waste discharge and other waste management facility operations. <br /> 12. Methane and other landfill gases shall be adequately vented, removed <br /> from the unit, or otherwise controlled to prevent the danger of <br /> explosion, adverse health effects , nuisance conditions, or the <br /> impairment of beneficial uses of water due to migration through the <br /> vadose (unsaturated) zone. <br />