SITE INFORMATION AND CORRESPONDENCE_CASE 2

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INFORMATION SHEET CITY OF TRACY WASTEWATER TREATMENT PLANT SAN JOAQUIN COUNTY The City of Tracy is governed under Order No. 85-214, NPDES No. CAO079154, adopted 23 August 1985, during expansion of the plant capacity from 5.5 to 9.0 mgd. This Order will be rescinded. The Board adopted Cease and Desist Order No. 78-52 on 28 April 1978 for numerous effluent violations and industrial pretreatment inadequacies. A time schedule was adopted to require plans to be developed by which the City could correct its operational problems. Also, a wet industry ban was imposed prohibiting additional industrial connections to the City's sewerage system. Operational problems have been eliminated and the City has had a satisfactory compliance record, Cease and Desist Order No. 78-52 will be considered for recision in the near. The Board adopted Cease and Desist Order No. 79-54 on 23 February 1979 to update the time schedule and to require plans developed in the first C&D be implemented through a construction project. Interim 30-day Biochemical Oxygen Demand (BOD) and Total Suspended Matter (TSM) effluent limits of 35 mg/l each were allowed until plant improvements were completed by the full compliance deadline. Plant improvements have been completed and the City has had a satisfactory compliance record, Cease and Desist Order No. 79-54 will be considered for recision. The Board adopted Order 79-123 on 25 May 1979 to allow a limited wet industry connection. The additional flow was not expected to impact effluent quality because some treatment plant operational improvements had been made since the first C&D was imposed. Plant improvements have been completed and the City has had a satisfactory compliance record, Cease and Desist Order No. 79-123 will be also be considered for recision. The Board adopted Special Order No. 80-097 on 25 July 1980 to amend Board Order No. 77-182 (the Original City of Tracy NPDES Permit) to require compliance with federal pretreatment standards in accordance with a specified time schedule. Full compliance with an approved pretreatment program was required by 1 July 1983. The City initial pretreatment program was approved in 22 March 1983. In July 1987, EPA and Regional Board staff conducted and audit of the City's pretreatment program. The audit revealed numerous deficiencies in the pretreatment program including inadequate control mechanism, inadequate local ordinances, and non-technically based local limits. The City has corrected the deficiencies in the pretreatment program and the City is in compliance with pretreatment regulations. Since the City of Tracy was named with seven