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0 • CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. R5-2004-0028 NPDES NO. CA0081558 WASTE DISCHARGE REQUIREMENTS FOR CITY OF MANTECA, CITY OF LATHROP AND DUTRA FARMS WASTEWATER QUALITY CONTROL FACILITY SAN JOAQUIN COUNTY The California Regional Water Quality Control Board,Central Valley Region, (hereafter Regional Board) finds that: BACKGROUND 1. The City of Manteca submitted a Report of Waste Discharge, dated 27 November 2001, and applied for a permit renewal to discharge waste under the National Pollutant Discharge Elimination System(NPDES) from the Wastewater Quality Control Facility(WQCF). Supplemental information to complete filing of the application was submitted on 14 March 2002, 5 September 2002, 17 October 2002, 20 May 2003, and 17 July 2003. The City of Manteca's WQCF accepts wastewater flows from certain areas of the City of Lathrop, therefore the City of Lathrop is named in this permit and is responsible for operation and maintenance of its wastewater collection system. The City of Manteca leases 150 acres of land from Dutra Farms (Assessor's parcel Nos. 241-320-01 and 241-320-02) for application of treated wastewater; therefore Dutra Farms is named in this permit and is responsible for the proper application and management of the wastewater on its land. The City of Manteca is solely responsible for the wastewater treatment facility. The City of Manteca,the City of Lathrop and Dutra Farms are hereafter individually and/or jointly referred to as Discharger. 2. The Discharger owns and operates a wastewater collection,treatment, and disposal system, and provides sewerage service to the City of Manteca and the City of Lathrop. The WQCF is in Section 4, T2S, R6E, MDB&M, as shown on Attachment B, a part of this Order. The existing treatment plant is on property owned by the City of Manteca. Land disposal of effluent is maximized by discharging effluent at agronomic rates seasonally to existing City-owned property, and additional leased property as shown on Attachment A, a part of this Order. Excess flow of treated municipal wastewater is discharged to the San Joaquin River, a water of the United States, and part of the Sacramento-San Joaquin Delta(Delta) at the point, latitude 37°, 46', 45" (deg, min, sec) and longitude 121°, 18', 00" (deg,min, sec). 3. The collection system consists of two main lines servicing the City of Manteca and one line for the City of Lathrop. A separate industrial waste line has been constructed for collection of food processing waste so that it can be separately treated and disposed on land. The industrial waste