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f ' <br /> Table 1 <br /> Groundwater Monitoring Data and Analytical Results <br /> i Chevron Service Station##9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy, California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to May 18,1 2000,were compiled from reports prepared by Blame Tech Services,Inc <br /> I' <br /> TOC=Top of Casing TPH-G=Total Petroleum Hydrocarbons as Gasoline SVOCs=Semivolatile Organic Compounds <br /> (ft)=Feet B=Benzene VOCs=Volatile Organic Compounds <br /> GWE=Groundwater Elevation T=Toluene (ppb)=Parts per billion <br /> (msl)=Mean sea level E=Et}ylbenzene --=Not Measured/Not Analyzed <br /> DTW=Depth to Water X=Xylenes QA=Quality Assurance/Tnp Blank <br /> SPHT=Separate Phase Hydrocarbon Thickness MTBE�h Methyl tertiary butyl ether <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel TOG=,,Total Oil and Grease <br /> II <br /> Chromatogram pattern mdicaL an unidentified hydrocarbon <br /> z Insufficient preservative to reduce the sample pH to less than 2 Sample wIas analyzed within 14 days of sampling,but be and the 7da s recommended <br /> for Benzene,Toluene and Ethylbenzene <br /> 3 TOC elevation altered due to casing repairs <br /> 4 Laboratory report indicates g Isolme C6-C12 tl <br /> 51 1 i <br /> Laboratory report indicates unidentified hydrocarbons<C16 ' f <br /> e Diesel data for MW-I is not available because there was not enough sample for extraction <br /> ? Laboratory report indicates unidentified hydrocarbons C9-C24 <br /> $ MTBE by EPA Method 82601 <br /> 9 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 /> 10 Laboratory report indicates discrete peaks <br /> i i BTEX and MTBE by EPA Method 8260 �{ <br /> 12 Laboratory report indicates the observed sample pattern is not typical of dies e1/#2 fuel oil y <br /> s <br /> i <br /> I � u <br /> t <br /> 7 <br /> r <br /> 9-8264 086854 AS/27/04 <br /> � I <br />