SITE INFORMATION AND CORRESPONDENCE 1980-1999

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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO.2000-**** NPDES NO. CA0079243 WASTE DISCHARGE REQUIREMENTS FOR CITY OF LODI WHITE SLOUGH WATER POLLUTION CONTROL PLANT SAN JOAQUIN COUNTY �n The California Regional Water Quality Control Board, Central Valley Region (hereafter Board), finds that: 1. The City of Lodi (hereafter Discharger) submitted a Report of Waste Discharge, dated 19 August 1997, and applied for a permit renewal to discharge waste under the National Cl 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 in Attachment A, a part of this Order. Secondary treated municipal wastewater is discharged to Dredger Cut, thence White Slough and Bishop Cut, waters of the United States, and tributaries to the Sacramento-San Joaquin Delta. The discharge occurs at the point latitude 38°, 05', 35" and longitude 121°, 23', 48". 3. The Report of Waste Discharge and monitoring reports describe the existing domestic wastewater discharge to surface water as follows: Average Flow: 5.6 mgd Design Flow: 8.5 mgd Average Temperature 81 °F Summer, 68 °F Winter Constituent' Concentration BOD 8.4 mg/l (392 lbs/day) Suspended Solids 8.4 mg/1 (392 lbs/day) TDS 410 mg/1 Cyanide <10 µg/1, (median); 49 µg/1, (highest measured) Organochlorine Pesticides 0.01 µgh, (median)Z; 0.051 µg/1 (highest measured) (Lindane) Lead (total recoverable) 1.5 µg/1, (median); 10µg/1, (highest measured) Mercury (total recoverable) <0.2µg/l, (median); 0.63 µg/1, (highest measured) Zinc (total recoverable) 110 µz/1 (median); 160 uz/1 (highest measured)