SITE INFORMATION AND CORRESPONDENCE CASE 2

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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. R5-2003-0141 WASTE DISCHARGE REQUIREMENTS FOR CALIFORNIA NATURAL PRODUCTS WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (hereafter Regional Board) finds that: 1. California Natural Products ("Discharger"or"CNP") submitted a Report of Waste Discharge (RWD), dated January 2003, for the land application of industrial wastewater. The RWD was submitted to add a new land application area and reduce the size of an existing land application area. In addition, the Discharger is requesting an increased flow limit based on the acquisition of additional land for wastewater application. 2. The RWD was submitted to revise Waste Discharge Requirements (WDRs) Order No. R5-2002-0071 that were adopted on 26 April 2002. 3. The processing facility is at 1250 E. Lathrop Road at the intersection of McKinley Avenue and Lathrop Road. The processing facility is on Assessor's Parcel Number 198-040-01; the land application areas are on Assessor's Parcel Nos. 198-040-01, 198-060-02, 198-100-18, and 198-090-17. 4. The properties are in Sections 25 and 26, T1S, R6E,MDB&M, as shown in Attachment A,which is attached hereto and made part of the Order by reference. The Discharger owns all of the parcels to be used for processing and/or land application. BACKGROUND 5. The Discharger processes rice and soy into food products such as rice syrup,rice syrup solids,rice milk, soy products, tea, and vegetable soups. Operations are conducted year round, five to seven days a week, three shifts per day,with cleanup operations performed as required, typically not less often than every forty-eight hours. 6. Products are packaged for retail sale on site. Aseptic packaging under sterile conditions requires hot water from boilers and regular acid/caustic tank and equipment cleaning cycles. Reverse osmosis (RO) is used to treat boiler feed water. RO reject water with a total dissolved solids concentration of approximately 1,200 mg/L is discharged to the process wastewater discharge tank. 7. The specific conductance of the water supply before use by the Discharger ranges from 470 µmhos/cm to 660 µmhos/cm. There is approximately a three-fold increase in total dissolved solids concentration in wastewater. In the past, the Discharger switched from ion exchange to reverse osmosis to reduce the amount of total dissolved solids in the process wastewater.