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WASTE DISCHARGE REQUIREMENTS -15- FORWARD INCORPORATED WASTE MANAGEMENT FACILITY CLASS II LANDFILLS CLASS III LANDFILLS CLASS II SURFACE IMPOUNDMENT CLASS II LAND TREATMENT UNIT SAN JOAQUIN COUNTY the bottom of the clay pad. Once the waste has dried, it and any soil it has contacted shall be moved to MMU "D", or "H" for disposal. The clay pad shall be rebuilt to its original thickness after each drying cycle. The application rate of food processing waste shall not exceed 270 cubic yards per acre. This operation may be done from Kay through October. 46. Wastewater and water treatment plant sludges may be dried and disposed of in the same manner as food processing waste. These sludges must not be a 'designated waste'. WMU CLOSURE SPECIFICATIONS 47. The closure of each WMU shall be under the direct supervision of a California registered civil engineer or certified engineering geologist. 48. Closed WMUs shall be provided with at least two permanent monuments, installed by a licensed land surveyor, from which the location and elevation of all wastes, containment structures, and monitoring facilities can be determined throughout the post -closure maintenance period. ,— a • 49, At closure, each landfil_I unit shall receive a final cover consisting, at a. minimum, of a two -foot thick foundation layer which may contain waste materials, overlain by a one -foot thick clay liner, and finally by a one -foot thick vegetative soil layer, or an engineered equivalent final cover approved by the Board pursuant to Subsections 2510(b) and (c) of Subchapter 15. 50. Vegetation shall be planted and maintained over each closed landfill unit. Vegetation shall be selected to require a minimum of irrigation and maintenance and shall have a rooting depth not in excess of the vegetative layer thickness. 51. Closed landfill units shall be graded to at least a three percent grade and maintained to prevent ponding.