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GroundwaterWhcal Results <br /> Former Chevron Service Station#9-6258 <br /> 2409 East Main at F Street <br /> Stockton,California <br /> EXPLANATIONS <br /> Groundwater laboratory analytical results prior to April 24,2000,were compiled from reports prepared by Blaine Tech Services,Inc <br /> TBA=Tertiary butyl ether <br /> MTBE=Methyl tertiary butyl ether <br /> DIPEā€”Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> (ppb)=Parts per billion <br /> ND=Not Detected <br /> --=Not Analyzed <br /> For the April 15, 1999 sample analyses,Tetrachloroethene(PCE)was reported in concentrations ranging from 1 37 to 4 2 ug/l <br /> 2 Laboratory report indicates sample was analyzed outside of EPA recommended hold time <br /> ANALYTICAL METHODS <br /> EPA Method 8015 (Modified)for Methanol <br /> EPA Method 8260 for Oxygenate Compounds <br /> 9-6258 xlsltl386844 9 As of 04/21/04 <br />