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WASTE DISCHARGE REQUIREMENTS <br /> CITY OF TRACY <br /> WASTEWATER TREATMENT PLANT <br /> SAN JOAQUIN COUNTY -2- <br /> 8. The State Water Resources Control Board Water Quality Control Plan for <br /> Control of Temperature in Coastal and Interstate Waters and Enclosed <br /> Bays and Estuaries of California (Thermal Plan) is applicable to this <br /> discharge. <br /> 9. The discharge is presently governed by the following Orders adopted by <br /> the Board: <br /> 78-52 Cease and Desist Order with prohibition on <br /> connection of new wet industries. <br /> 79-54 Cease and Desist Order, time schedule, and <br /> interim BOD and SS limits. <br /> 79-123 Amendment to Order 78-52 allowing a wet industry <br /> connection. <br /> 80-097 Special Order, amendment to Order 77-182 pre- <br /> scribing pretreatment standards. <br /> 85-214 (CA0079154) Waste Discharge Requirements and NPDES permit. <br /> 10. A review of self monitoring reports submitted by the Discharger <br /> indicates the basis for the Cease and Desist Orders (C&Ds) no longer <br /> exists since the Discharger is not currently violating or threatening to <br /> violate its effluent limits. The Discharger has completed expansion of <br /> its treatment plant and has had a satisfactory compliance record for the <br /> past three years. Additionally, the Discharger has revised its <br /> pretreatment program including adopting new ordinances to comply with <br /> the present pretreatment standards. The two C&Ds and the amendment Order <br /> will be considered for rescission. <br /> 11 . The Discharger established an acceptable pretreatment program in <br /> compliance with Special Order 80-097. The Order will be retained <br /> because six other communities or cities were named in the same Order. <br /> 12. The Department of Health Services has expressed concerns about the <br /> protection of public health because the discharge from the City of Tracy <br /> is upstream of two major water intake facilities, the Bureau of <br /> Reclamation Delta-Mendota Canal and the Department of Water Resources <br /> Clifton Court Forebay. The Delta-Mendota Canal is used for drinking <br /> water for the City of Tracy and for irrigation of food crops. <br /> 13. Effluent limits in this permit are based on existing flow regimes of Old <br /> River. The available data show the maximum portion of Old River <br /> consisting of the wastewater discharge from the Discharger during low <br /> flow periods is approximately 1 .0%, assuming no flow reversal . There <br /> are proposals to further manipulate surface flows in the Sacramento-San <br />