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*TEE A WE <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> ORDER NO. <br /> NPDES NO. CA0079243 <br /> WASTE DISCHARGE REQUIREMENTS <br /> FOR <br /> CITY OF LODI <br /> WHITE SLOUGH WATER POLLUTION CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> The California Regional Water Quality Control Board, Central Valley Region, (here- <br /> after Board) finds that: <br /> 1. The City of Lodi submitted a report of waste discharge NPDES No. CA0079243, <br /> dated 28 January 1980. <br /> 2. The City of Lodi, White Slough Water Pollution Control Plan discharges an <br /> average of 4.2 mgd (184 1/sec) and proposes to discharge an average of <br /> 5.8 mgd (254 1/sec) and a maximum of 6.4 mgd (280 1/sec) of treated domestic <br /> wastewater from secondary treatment facilities into Dredger Cut, White Slough, <br /> and Bishop Cut, waters of the United States, at a point 5 miles (8 km) south- <br /> west of Lodi, in the southeast 1/4 of Section 23, T3N, RSE, MB&M. <br /> 3. The report of waste discharge describes the existing discharge as follows: <br /> Average flow: 4.2 million gallons per operating day (184 1/sec) <br /> Average Temperature: 770F Summer; (25°C) : 660F Winter; (190C) <br /> Average BODS: 14 mg/l <br /> Average total suspended solids: 19 mg/1 <br /> Average settleable matter: 0.2 ml/l <br /> pH: 7.0 lowest monthly average: 7.3 highest monthly average <br /> 4. An average of 0.86 mgd (38 1/sec) of industrial wastewater is discharged to <br /> holding ponds and field irrigation areas. Treated domestic wastewater is <br /> also discharged to field irrigation areas when the dissolved oxygen concentra- <br /> tion in White Slough falls below 5.0 mg/l, and throughout the irrigation <br /> season. <br /> 5. The Board, on 25 July 1975, adopted a Water Quality Control Plan for the <br /> Sacramento-San Joaquin Delta Basin. The Basin Plan contains water quality <br /> objectives for White Slough, Dredger Cut, and Delta Waters. <br /> 6. The beneficial uses of Dredger Cut, White Slough, Bishop Cut and Delta <br /> Waters are preservation and enhancement of fish, wildlife and other aquatic <br /> resources, domestic, municipal, agricultural and industrial supply; recrea- <br /> tion; esthetic enjoyment; and navigation. <br />