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Teichert and Son -4- March 24, <br /> Claim No. 51 ` <br /> • The source of the UST release has been identified and removed <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 /> t¢ . .. <br /> • Contaminants remaining in the vadose zonacannot migrate in soil vapor <br /> or [each at concentrations that would cause groundwater to exceed water <br /> 4Y 1 <br /> quality objectives. <br /> There are no existing water supply wells, surface waters or other L <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 /> 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, and Water <br /> ,Quality Objectives will be achieved in a few years. <br /> } Kirk Larson, P.G. Date Robert Trommer, C.H.G. Date <br /> Technical'Review UnitChief, Technical Review_ Unit <br /> (916) 341-5663 A. (916) 341-5684 <br /> o- } _.71 <br /> California Environmental Protection Agency <br /> P„a itery,*d Paper <br />