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KI_EINFELDER 3 BACKGROUND Background information on the Lodi Vintners facility was obtained from previous RWQCB documents provided to Kleinfelder by Lodi Vintners and interviews with Mr. Tyson Rippey, Vice-President of Lodi Vintners, Inc. According to the documents and Mr. Rippey, Lodi Vintners has conducted grape crushing and juice storage at the Acampo facility since 1991. Approximately 3,000 tons of grapes are crushed at the facility annually. Primary operations are conducted between early August through late October. The grape juice is chilled and stored in tanks (3.5 million gallons capacity) prior to transportation to other facilities. Solids generated by the crushing are removed by settling, aided by mechanical pressing and a desludging centrifuge. The grape pumice, leaves, and other organic matter generated by the crushing are hauled off-site as sufficient loads are generated and transported locally for use as fertilizer. During the primary operational months, Lodi Vintners discharges a maximum of 50,000 gallons a day of wash water from the facility to four evaporation/percolation ponds. The wastewater consists of effluent from washing equipment and grape juice storage tanks. Cleaning agents include a 1% solution of chlorinated tri-sodium phosphate and calcium hypochlorite solutions. The four ponds have an approximate storage capacity of 3.9 million gallons. During the non-operational season, the evaporation/percolation ponds are used for storm water run-off collection. Lodi Vintners, Inc received a Revised Monitoring and Reporting Program No. 93-112 and Request to Install Groundwater Monitoring Wells letter form the CVRWQCB, dated February 1 , 2006. The letter stated that the Regional Water Board was updating the Monitoring and Reporting Program (MRP) for Lodi Vintners Inc. to evaluate the impacts of the waste discharge and determine if Lodi Vintners, Inc is in compliance with WDR Order No. 93-112. Lodi Vintners Inc. existing MRP (Order No. 93-112) was issued prior to current RWQCB groundwater monitoring requirements that have changed due to the degradation of groundwater noted in association with other wineries using similar wastewater disposal methods. Lodi Vintners requested that Kleinfelder prepare this Monitoring Well Installation Workplan and Quarterly Groundwater Sampling and Analysis Plan for submittal to the RWQCB. 67451.WP1/ST06R295/FB:Iv Page 4 of 14 ©2006 Kleinfelder, Inc. March 31,2006