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. Tab,W . <br /> Groundwater A tial Results <br /> Chevron Service Station##9-8264 _ <br /> 3775 Tracy Boulevard <br /> Tracy,California <br /> EXPLANATIONS <br /> Groundwater laboratory analytical results prior to May 18,2000,were compiled from reports prepared by Blaine Tech Services,Inc <br /> 2,4-Dim=2,4-Dimethylphenol Ni=Nickel ETBE=Ethyl tertiary butyl ether <br /> 2-MnPht=2-M ethyl phenol Pb=Lead TAME=Tertiary amyl methyl ether <br /> 4-MnPht=4-Methylphenol Zn=Zinc --=Not Analyzed <br /> Nap=Naphthalene TBA=Tertiary butyl alcohol (ppb)=Parts per billion <br /> Cd=Cadmium MTBE=Methyl tertiary butyl ether <br /> Cr=Chromium DIPE=Di-isopropyl ether <br /> Laboratory report indicates calcium was detected at 130,000 ppb <br /> Laboratory report indicates second highest MTBE concentration was confirmed by 8260 Initial BTEX analysis indicated that this well appeared to <br /> have the highest MTBE concentration <br /> 3 Laboratory report indicates 3-Methylphenol and 4-Methylphenol cannot be resolved under the chromatographic conditions used for sample analysis <br /> The result reported for 4-Methylphenol represents the combined total of both compounds <br /> ANALYTICAL METHODS <br /> See laboratory report for specific analytical methods <br /> I <br /> I <br /> I <br /> I <br /> I <br /> 9-8264 xls/4386854 11 As of 07/28/03 <br />