SITE INFORMATION AND CORRESPONDENCE 1980-1999

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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. T NPDES NO. CA0079243 u 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, N (hereafter Board) finds that: 1 . The City of Lodi (hereafter Discharger) submitted a Report of Waste Discharge, dated 11 January 1988, and applied for a permit renewal to discharge waste under the National Pollutant Discharge Elimination System (NPDES) from the White Slough Water Pollution Control Plant. 2. The Discharger operates a wastewater collection, treatment, and disposal system, and provides sewerage service to the City of Lodi . The treatment plant is in Section 23, T3N, R5E, MDB&M, as shown on Attachment A, a part of this Order. Secondary treated municipal wastewater is discharged to Dredger Cut, a water of the United States and a tributary to the Sacramento-San Joaquin Delta. ll� 3. The Report of Waste Discharge describes the existing domestic wastewater discharge as follows: Average Flow: 5.9 million gallons per day (mgd) Design Flow: 6.2 mgd Constituent Mq/1 lbs da BOD 19 936 (Annual average) Suspended Matter 18 886 (Annual average) 4. The majority of the industrial wastewater is collected in a separate sewer. The primary source of industrial wastewater is from a cannery, with smaller volume flows from some metal finishers. Flows range from 0.15 mgd to 3.75 mgd, with the higher flows associated with the canning season. Untreated industrial wastewater is combined with sludge generated in the mechanical n plant and is reclaimed in the summer by irrigating 650 acres of V agricultural land owned by the City (Assessor Parcel Nos. 055-120-01, 055- 120-07, 055-130-04, 055-130-13, 055-130-14, 055-150-11, 055-150-12, 055- 150-14, 055-150-15, and 055-150-17) . During the winter the wastewater is stored in 40 acres of ponds. The City has purchased an additional 275 acres (Assessor Parcel Nos. 055-120-08, 055-130-01, and 055-130-03) which can be added to the reclamation areas after site modifications are completed. The reclamation areas are shown on Attachment B, a part of this Order.