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WASTE DISCHARGE REQUIREME, _3 ORDER NO.R5-2004-XXXX -11- DEFENSE DISTRIBUTION DEPOT SAN JOAQUIN SHARPE WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY 1. Sludge and solid waste shall be removed from screens, sumps, ponds, and clarifiers as needed to ensure optimal plant operation. 2. Treatment and storage of sludge generated by the WWTF shall be confined to the WWTF property, and shall be conducted in a manner that precludes infiltration of waste constituents into soils in a mass or at concentrations that will violate the Groundwater Limitations of this Order. 3. Any storage of residual sludge, solid waste, and biosolids at the WWTF shall be temporary, and the waste shall be controlled and contained in a manner that minimizes leachate formation and precludes infiltration of waste constituents into soils in a mass or at concentrations that will violate the Groundwater Limitations of this Order. 4. Residual sludge,biosolids, and solid waste shall be disposed of in a manner approved by the Executive Officer and consistent with Title 27. Removal for further treatment, disposal, or reuse at disposal sites (i.e., landfills, WWTFs, composting sites, soil amendment sites) operated in accordance with valid waste discharge requirements issued by a regional water quality control board will satisfy this specification. 5. Use of biosolids as a soil amendment shall comply with valid waste discharge requirements issued by a regional water quality control board. In most cases, this will mean the General Biosolids Order(State Water Resources Control Board Water Quality Order No. 2000-10-DWQ, General Waste Discharge Requirements for the Discharge of Biosolids to Land for Use as a Soil Amendment in Agricultural, Silvicultural, Horticultural, and Land Reclamation Activities). For a biosolids use project to be covered by the General Biosolids Order, the Discharger must file a complete Notice of Intent and receive a Notice of Applicability for each project. 6. Use and disposal of biosolids shall comply with the self-implementing federal regulations of Title 40, Code of Federal Regulations (CFR), Part 503,which are subject to enforcement by the U.S. EPA, not the Regional Board. If during the life of this Order, the State accepts primacy for implementation of 40 CFR 503, then the Regional Board may also initiate enforcement where appropriate. E. Land Disposal Specifications 1. Discharge of effluent to a temporary pond south of Building 404 may only occur to perform maintenance on the primary disposal pond or to prevent shutdown of the WWTF when the primary disposal pond does not provide adequate capacity. The Discharger shall submit a ROWD to the Regional Board at least 2 weeks in advance of discharging to the temporary pond. The ROWD shall specify the location of the temporary pond, conveyance system from the WWTF to the pond, estimated discharge rate, and anticipated duration of discharge to the pond. Discharge to the temporary pond shall not exceed 60 days within a calendar year without the written approval of Regional Board staff. The Regional Board may impose additional groundwater monitoring requirements if discharge to the temporary pond exceeds 60 days within a calendar year.