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TENTATIVE WASTE DISCHARGE REQUIREMENTS ORDEeNO._ -4- WASTE DISCHARGE REQUIREMENTS FOR CLOSURE,POST CLOSURE AND CORRECTIVE ACTION OF SURFACE IMPOUNDMENTS AT KRUGER FOODS, INC -SMS BRINERS VEGETABLE BRINING FACILITY SAN JOAQUIN COUNTY 12.89 inches of precipitation per year as measured at the Manteca station(southwest of SMS Briners). Annual mean precipitation as measured at the Stockton Fire Station#4(west of SMS Briners)is 16.61 inches. These two stations do not collect pan evaporation data. The nearest such pan evaporation data station appears to be in the City of Lodi (northwest of SMS Briners). Mean pan evaporation is 65.15 inches per year as measured at the City of Lodi Station. 15. The 100-year, 24-hour precipitation event is estimated to be 3.65 inches,based on Department of Water Resources'bulletin entitled Rainfall Depth-Duration-Frequency for California, revised November 1982, updated August 1986. This compares very well to a value of 3.5 inches, obtained from an iso-pluvial map for northern California published by the Western Regional Climate Center(h=://www.wrcc.dri.edu�. 16. The waste management facility is not within a 100-year flood plain based on the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Map 0490A(May 15, 1980), Community-Panel Number 060299. 17. There are 18 domestic, industrial, or agricultural groundwater supply wells within one mile of the site. 18. The Water Quality Control Plan for the Sacramento River and San Joaquin River Basin, Fourth Edition(hereafter Basin Plan) designates beneficial uses, establishes water quality objectives, and contains implementation plans and policies for all waters of the Basin. SURFACE WATER CONDMONS 19. Surface drainage is toward North Fork Little John's Creek in the North Valley Hydrologic Area, Duck Little Johns Unit(531.40) of the San Joaquin River Basin. 20. The designated beneficial uses of the North Fork Little John's Creek, as specified in the Basin Plan, are municipal and domestic supply, agricultural supply; industrial process and power supply;water contact and non-contact water recreation; cold fresh water habitat; wildlife habitat and groundwater recharge. The Discharger's monitors surface water by sampling Little Johns Creek at the following.locations, Cl, C2, C3 and C4. These sampling locations are shown on Attachment C,which is incorporated herein and made a part of this Order. 21. Surface water samples are collected from North Little Johns Creek. Chloride concentrations in background samples ranged from 1.8 to 15 mg/1 in 2003. The downstream location C4 had a reading of 690 mg/1 in November 2003. The increasing levels of chloride in the downstream sample locations suggest that operations at the facility have impacted surface waters.