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0 <br />WASTE DISCHARGE REQUIREMENTS <br />R CITY OF STOCKTON <br />AUSTIN ROAD <br />CLASS <br />SAN JOAQUIN COUNTY <br />2. Wastes shall not be discharged below an elevation of 20 feet, mean sea level <br />(MSL). A minimum separation of 5 feet shall be maintained between wastes <br />or leachates and the highest anticipated elevation of underlying ground water <br />including the capillary fringe. <br />7 <br />3. All wells within 500 feet of the landfill shall be sealed or abandoned to the <br />satisfaction of the San Joaquin County Public Health Services Department prior <br />to'the discharge of waste to the landfill. A record of the sealing and/or <br />abandonment of such wells shall be sent to the Board and to the State <br />Department -of Water Resources. <br />4. Leachate generation by a landfill unit LCRS shall not exceed 85% of the design <br />capacity of the sump pump. If leachate generation exceeds this value or if the <br />depth of fluid in an LCRS exceeds the minimum needed for pump operations, <br />then the Discharger shall immediately cease the discharge of sludges and other <br />high -moisture wastes to the landfill unit and shall notify the Board in writing <br />within seven days. Notification shall include a timetable for remedial or <br />corrective action necessary to reduce leachate production. <br />6. Neither the treatment nor the discharge of wastes shall cause a pollution or <br />nuisance as defined by the California Water Code, Section 13050. <br />General Waste Management Unit Construction <br />7. Clay liners and landfill caps shall have a hydraulic conductivity of 10-7 cm/s or <br />less and a minimum relative compaction of 90%. Hydraulic conductivities of <br />liner materials shall be determined by laboratory tests using solutions with <br />similar properties as the fluids that will be contained. Hydraulic conductivities <br />of cap materials shall be determined by laboratory tests using water. Hydraulic <br />conductivities determined through laboratory methods shall be confirmed by <br />field testing in accordance with the Standard Provisions and Reporting <br />Requirements as described in Provision D.1. <br />8. LCRSs shall be designed, constructed and maintained to collect twice the <br />anticipated daily volume of leachate generated by the landfill and to prevent the <br />buildup of hydraulic head on the underlying natural geologic materials of low <br />hydraulic conductivity. The depth of fluid in any LCRS sump shall be <br />maintained as low as feasible and no greater than the minimum needed for safe <br />pump operation. <br />