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- <br />' WASTE DISCHARGE REQUIREMENTS <br />FORWARD INCORPORATED <br />%NCORPORAJEQ <br />WASTE 14ANAGEMENT FACILITY <br />CLASS II LANDFILLS <br />[LASS III LANDFILLS <br />CLASS II SURFACE IMPOUNDMENT <br />CLASS II LAND TREATMENT UNIT <br />SAN JCA0UIN COUNTY <br />24. Each trench in WMU °D° and °H° accepting dewatered sewage or water <br />treatment sludges shall have a two -foot thick clay liner (I0-6 cm/sec <br />permeability) with a dendritic or blanket type LCRS immediately above <br />the liner which Is designed and operated to prevent the development of <br />one -foot or more of hydraulic head on the lower liner at any time. <br />25. Any additional ash pits constructed in WMU °E" shall be built <br />following the design and construction plans for the eastern -most pit. <br />26. Any landfill trench or pit in WMUs "D", °E°° or°H» shall be designed <br />and constructed in accordance with Subchapter 15 and approved by the <br />Board prior to construction and again prior to operation. <br />27. Leachate generation by a landfill unit LCRS shall not exceed 85T, of <br />the design capacity of the sump pump. If leachate generation exceeds <br />this value or if the depth of fluid in an LCRS exceeds the minimum <br />needed for pump operation, then the Discharger shall immediately cease <br />the d]scharge of sludges and other high -moisture wastes to the <br />landfill unit and shall notify the Board in writing within seven days. <br />Notification shall include a timetable for corrective action necessary <br />to reduce leachate production. <br />28. No lower liner is required for the Class III landfills unless the <br />'nonhazardous solid waste' threatens to degrade ground water quality, <br />or the unit receives sewage or water treatment sludge. <br />^ <br />' <br />29. Any surface impoundment in WMU "F" shall be designed and constructed <br />in accordance with Subchapter 16 and approved by the Board prior to <br />construction and again prior to operation. <br />' 30. The surface impoundments shall be designed, constructed and operated <br />to maintain o freeboard Of no less than two feet, plus that needed for <br />the 100 -year return wet season. <br />31. Any dlrect-lini� discharge to a surface impoundment shall have fail- <br />safe <br />32. The surface impoundment/sl shall be designed, constructed and <br />maintained to prevent scouring and/or erosion of the liner(s) and <br />other containment features at points of discharge to the impoundments <br />