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�xSr <br /> Jess Cervantes -4- <br /> a <br /> Claim No. 8509 May 7, 2009 <br /> • The source of the UST release has been identified and removed. <br /> { <br /> • Free-phase product in groundwater has been removed to the full extent <br /> practicable, in accordance with the UST Regulations (Title 23, CCR, , <br /> { Section 2655). <br /> Contaminants remainingin I �! <br /> the vadose zone cannot migrate in soil vapor <br /> or leach at concentrations that would cause groundwater to exceed water <br /> f quality objectives. !� F <br /> • There are no existing water supply wells, surface waters or other <br /> receptors threatened by the remaining contaminants in soil or <br /> groundwater. <br /> Pollutants remaining in groundwater do not create or threaten tocreaterisk to human health and safety, or to future beneficial use(s) of the , <br /> IE groundwater. i <br /> p <br /> • The plume size is stable and sufficiently delineated in lateral and vertical <br /> extent and contaminant concentrations det"ectedl in groundwater show a <br /> decreasing trend with time. <br /> • There are no current or anticipated uses of the irn acted groundwater <br /> Y J <br /> within the timeframe projected to meet water qualit objectives. <br /> f In summary, the remaining mass of hydrocarbons in soil and groundwater is <br /> f minor, the extent of contamination is defined, the groundwater plume is shrinking, <br /> f and Water Quality Objectives will be achieved in a few years. <br /> r <br /> UPDATED, May 2009: The Fund continues to recomm{end that the San Joaquin <br /> Count LOP consider this site for closure. Further investigation at this site i <br /> Y g s <br /> unlikely to benefit the people of California. <br /> Kirk Larson, P.G. Date. Robert Trommer, C.H.G. Date <br /> Technical Review Unit Chief, Technical Review Unit <br /> (916) 341-5663 (916) 34-i-5684 <br /> ' l <br /> 'k } <br /> r! <br /> i� <br /> r <br /> r <br /> .r <br /> California Environmental Protection,Agency <br /> Recycled Paper <br />