SITE INFORMATION AND CORRESPONDENCE_CASE 2

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INFORMATION SHEET ORDER NO. R5-2007- CITY OF TRACY AND LEPRINO FOODS COMPANY LAND DISCHARGE UNITS OF THE TRACY WASTEWATER TREATMENT PLANT SAN JOAQUIN COUNTY I. Permit Information A. The Tracy Wastewater Treatment Plant (hereafter Facility) treats primarily domestic wastewater collected via the City of Tracy's wastewater collection system. The Facility also accepts industrial food processing wastewater through a segregated collection system from Leprino Foods Company (Leprino), a local cheese manufacturer. Leprino operates pretreatment units at the Facility to pretreat its industrial food processing wastewater prior to discharge to the City of Tracy-operated unlined industrial ponds. The industrial wastewater is held in the ponds prior to final treatment at the main treatment plant. B. The Facility discharges wastewater to Old River, located within the Sacramento-San Joaquin Delta, a water of the United States. The discharge is currently regulated by Order No. 96-104, which was adopted on 3 May 1996 and expired on 3 May 2001. The terms of Order No. 96-104 automatically continued in effect after the permit expiration date. The Discharger filed a report of waste discharge and submitted an application for renewal of its Waste Discharge Requirements (WDRs) and National Pollutant Discharge Elimination System (NPDES) permit on 1 November 2000. Subsequently, on 3 February 2003, the City of Tracy submitted a revised report of waste discharge, which included a request for expansion. Supplemental information was received on 25 September 2003, 30 September 2003, and 29 April 2004. A site visit was conducted on 9 November 2004, to observe Facility operations and conditions. C. Due to the close proximity of the City of Tracy and Leprino operated waste units, it is difficult to distinguish between the discharges to land from the facilities operated by the City of Tracy and those operated by Leprino. Therefore, the City of Tracy and Leprino are individually and/or jointly referred to as "Discharger." Leprino is solely responsible for discharges from its segregated industrial pipeline and the waste units it operates at the Facility. The City of Tracy is the owner of the Facility and is responsible for all discharges from the Facility, including the discharges from the Leprino operated waste units. D. The Facility is regulated under Order No. R5-2007- (NPDES No. CA0079154), to discharge treated municipal wastewater to Old River. However, as part of its treatment train, the Facility includes aerated lagoons, unlined industrial ponds, unlined sludge drying beds, and unlined sludge storage basins. This Order regulates the land discharges from these treatment facilities.