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WASTE DISCHARGE REQUIREMENTS <br />FORWARD INCORPORATED <br />WASTE MANAGEMENT FACILITY <br />CLASS II LANDFILLS CLASS III LANDFILLS <br />CLASS II SURFACE IMPOUNDMENT <br />CLASS II LAND TREATMENT UNIT <br />CLOSURE OF CLASS I LANDFILL <br />SAN JOAQUIN COUNTY <br />San Joaquin County prior to the discharge <br />record of the sealing and/or abandonment o <br />to the Board and to the State Department <br />GENERAL WNU CONSTRUCTION <br />5810 <br />of waste to the unit. A <br />f such wells shall be sent <br />of Water Resources. <br />10. Materials used to construct liners shall have appropriate physical <br />and chemical properties to ensure containment of discharged wastes <br />over the operating life, closure, and post -closure maintenance period <br />of the WMUs. <br />11. Materials used to construct the LCRSs shall have appropriate physical <br />and chemical properties to ensure the required transmission of <br />leachate over the life of the WMUs. <br />12. Clay liners and landfill caps shall have a hydraulic conductivity <br />of 1x10 cm/s or less and a minimum relative compaction of 90 <br />percent. Hydraulic conductivities of liner materials shall be <br />determined by laboratory tests using solutions with similar <br />properties as the fluids that will be contained. Hydraulic <br />conductivities of cap materials shall be determined by laboratory <br />tests using water. <br />Hydraulic conductivities determined through laboratory methods shall <br />be confirmed by field testing of the finished liner. Construction <br />methods and quality assurance procedures shall be sufficient to <br />ensure that all parts of the liner and cap meet the hydraulic <br />conductivity, moisture content and compaction requirements. <br />13. LCRS shall be designed, constructed, and maintained to collect twice <br />the anticipated daily volume of leachate generated by the WMU and <br />to prevent the buildup of hydraulic head on the underlying liner at <br />any time. The depth of fluid in any LCRS sump shall be maintained <br />low enough to prevent a significant head on the liner. <br />SUPERVISION AND CERTIFICATION OF CONSTRUCTION <br />14. All containment structures shall be designed and constructed under <br />the direct supervision of a California registered civil engineer or <br />a certified engineering geologist and shall be certified by that <br />