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F1 March 8, 2005 NOA PROJECT NUMBER E04070B Cherries will be rinsed with non-cooled water followed by the chilled chlorinated water. The chlorine concentration will be 50 to 60 mg/l, and this water will be recycled during processing F activities. Starting in 2005, the hydrocooler water will be treated by sodium thiosulfate to I 1 neutralize free chlorine prior to discharge into the wastewater pond. Wastewater effluent data collected during 2004, determined that the effluent contains low levels F1 of total dissolved solids (TDS)with associated biochemical oxygen demand (BOD). Wastewater data for chlorine and trihalomethanes(THMs)was also collected. THMs are formed when chlorinated water is brought into contact with organic matter over time and as a function of temperature. A THM formations potential test was performed with the site's supply well. The results of this test showed that THM formation potential was low(6.5 µg/L-- after seven days). Due to chloroform in the wastewater in 2004,the effluent will be treated with sodium thiosulfate F1 to minimize THM formation. 3.0 WASTEWATER SYSTEM Stormwater is collected.from paved areas and buildings and is piped to the storage pond. P Because industrial wastewater is mixed with stormwater in the pond, all the water collected in the pond will be handled and disposed of as industrial wastewater. A balance that demonstrates adequate storage and disposal capacity for the wastewater and stormwater that will be generated on site is presented in MPF's Report of Waste Discharge (RWD) dated.September 30, 2002 1 prepared by Don Chesney of Chesney Consulting. MPF's treatment of process wastewater consists of free chlorine neutralization and screening prior to discharge into the wastewater pond. The pond is approximately 150 feet by 145 feet and is 15 feet deep. The storage capacity of the pond is approximately 1.46 million gallons. 4.0 LAND APPLICATION SYSTEM F1Wastewater may be discharged from the pond to a 160 acre walnut orchard. Based upon the RWD water balance, the pond will go dry during September even using the 100 year return r. annual rainfall amount. The pond will likely go dry earlier in the year during normal rainfall years. Because the wastewater does not provide enough water for irrigation of the orchard, supplemental irrigation water is mixed with the wastewater and applied to the crops. Mix ratios (the amount of supplemental water divided by the amount of waste/stormwater) will vary from the minimum factor of five for the month of December to a maximum of 217 in the month of July. To control taiiwater, the irrigated area is bermed. Application of wastewater to the orchard will be by flood method. Sprinkler applied wastewater will be acceptable if the application area Fmeets "Section D, Land Area Specifications" from order no. R5-2003-0178 of the Board. Wastewater applications will be rotated to allow drying time and to prevent odors. If odors are detected, the irrigated area will be allowed to dry out thoroughly. Discing activities can be r performed between crop activities. Fil 2