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i T402 <br /> Groundwater Analytical 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 Blame Tech Services,Inc <br /> 2,4-Dim=2,4-Dimethylphenol Ni=Nickel ETRE=Ethyl tertiary butyl ether <br /> 2-MnPht=2-Methylphenol 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 /> I Laboratory report indicates calcium was detected at 130,000 ppb <br /> 2 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 /> ANALYTICAL,METHODS• <br /> Semivolatile Organic Compounds by EPA Method 8270 <br /> Dissolved Metals by EPA 200 Series Methods <br /> Volatile Organic Compounds by EPA Method 8010 <br /> 9-8264 xls/#386854 9 As of 07/18/01 <br />