SITE INFORMATION AND CORRESPONDENCE_CASE 2

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WASTE DISCHARGE REQUIREh1ENTS ..i CITY OF TRACY SAN JOAQUIN COUNTY -2- 7. The beneficial uses of Old River and Delta waters are municipal , industrial , and agricultural supply; recreation; esthetic enjoyment; navigation; and preservation and enhancement of fish, wildlife and other aquatic resources. 8. Effluent limitations, and toxic and pretreatment effluent standards estab- lished pursuant to Sections 208(b) , 301, 302, 303(d) , 304, and 307 of the Clean Water Act and amendments thereto are applicable to the discharge. 9. The discharge is presently governed by the following Orders adopted by the Board: 77-182 (CA0079154) Waste Discharge requirements and NPDES permit. 78-52 Cease and Desist Order with prohibition on connec- tion of new wet industries. 79-54 Cease and Desist Order, time schedule, and interim BOD and SS limits. 79-123 Cease and Desist Order, amendment to Order 78-52 allowing a wet industry connection. 80-097 Special Order, amendment to Order 77-182 pre- scribing pretreatment standards. 81-076 Special Order, amendment to Order 78-52 to allow relaxation of total suspended matter (TSM) . 10. A review of self monitoring reports submitted by the City indicates the basis for the Cease and Desist Orders (C&Ds) still exist (i .e, the City violates or threatens to violate effluent limits for daily maximum total coliform and chlorine residual ) . The three C&Ds will be retained. 11. The City is proceeding with a $4.7 million project to eliminate solids handling problems which were a significant source of effluent violations when the first C&D was adopted. The City is also expanding plant capacity from 5.5 to 9.0 mgd. The solids handling and plant expansion projects are pro- ceeding together and are scheduled for completion in 1987. 12. The City establised an acceptable pretreatment program in compliance with Special Order 80-097. The Order will be retained because six other commu- nities or cities were named in the same Order. Special Order 81-076 to allow relaxation of suspended matter will be rescinded because relaxation of total suspended matter to 30 mg/l is incorporated into the City's new NPDES permit. 13. The Department of Health Services has expressed concerns about the protection of public health because the discharge from the City of Tracy is upstream of two major water intake facilities, the Bureau of Reclamation Delta-Mendota Canal and the Department of Water Resources Cliften Court Forebay. The Delta-Mendota Canal is used for drinking water for the City of Tracy and for irrigation of food crops.