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i <br /> Country Club Food a4r-uel -4- May 7, 2008 <br /> Claim No. 14971 <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 remaining in the vadose.zone cannot migrate in soil vapor <br /> or leach at concentrations that would cause groundwater to exceed water <br /> quality objectives. <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 to create <br /> risk to human health and safety, or to future beneficial use(s) of the <br /> groundwater. <br /> • The plume size is stable and sufficiently delineated in lateral and vertical <br /> extent and contaminant concentrations detected in groundwater show a <br /> decreasing trend with time. <br /> • There are no current or anticipated uses of the impacted groundwater <br /> within the timeframe projected to meet water quality objectives. <br /> In summary, the remaining mass of hydrocarbons in soil and groundwater is minor, the <br /> extent of contamination is defined, the groundwater plume is shrinking, the constituents <br /> of concern are relatively immobile, there is no risk to the public or the environment, and <br /> Water Quality Objectives will be achieved within a reasonable period of time. <br /> �� v <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) 341-5684 <br /> Caiifornis Eu Ykonmentw Protecdon Agency <br /> io <br /> 0A Recyc%d Paper <br />