SITE INFORMATION AND CORRESPONDENCE 1980-1999

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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. _ NPDES NO. CAOO79243 WASTE DISCHARGE REQUIREMENTS FOR CITY OF LODI WHITE SLOUGH WATER POLLUTION CONTROL PLANT SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (hereafter Board) , finds that: 1. The City of Lodi , White Slough Water Pollution Control Plant, (hereafter Discharger) submitted a Report of Waste Discharge, dated 5 November 1984, and applied for a permit to Discharge waste under the National Pollutant Discharge Elimination System (NPDES) . 2. The City of Lodi , White Slough Water Pollution Control Plant, discharges an average of 4.7 million gallons per day (mgd) and proposes to discharge a maximum of 5.8 mgd of treated domestic wastewater from secondary treatment facilities into Dredger Cut, White Slough, Bishop Cut, and the San Joaquin Delta, waters of the United States , at a point five miles southwbest of Lodi , in the southeast 1/4 of Section 23, 173N, RSE, MDB&M. 3. The Report of Waste Discharge describes the existing discharge as follows: Average Flow: 4.7 mgd Design Flow: 5.8 mgd Average Temperature: 80°F (27°C) Summer; 66°F (19°C) Winter Constituent m9/1 lbs/day 800 26 1019 Suspended Matter 24 941 pH 6.4 - 7.0 -- 4. An average of 0.86 -mgd of industrial wastewater from a cannery, a commer- cial laundry, a metal finisher, a cherry briner, and some storm water is discharged to holding ponds and irrigation areas of approximately 650 acres , as shown on Attachments A and 8 which are hereby part of this Order. Treated domestic wastewater is also discharged to fields from July to October and when the dissolved oxygen concentration in White Slough falls below 5. 0 mg/l . Only fodder, fiber, and seed crops are irrigated by the aforementioned wastewaters.