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Tabk 1 ' <br /> Groundwater Monitoring Data and Analytical Results <br /> Chevron�Service Station#9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy,California <br /> I <br /> EXPLANATIONS i <br /> i <br /> Groundwater monitoring data and laboratory analytical results prior to May 18,2000,were compiled fr m 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 /> (R)=Feet B=Benzene i VOCs=Volatile Organic Compounds <br /> GWE=Groundwater Elevation T=Toluene jl , (ppb)=Parts per billion <br /> (msl)=Mean sea level E=Etliylbenzene --=Not Measured/Not Analyzed ' <br /> DTW=Depth to Water X=Xylenes 11 } QA=Quality Assurance/Trip Blank <br /> i <br /> SPHT=Separate Phase Hydrocarbon Thickness MTBE=Methyl tertiary bu I ether <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel TOG Total Oil and Greas <br /> I Chromatogram pattern indicated an unidentified hydrocarbon <br /> s Insufficient preservative to reduce the sample pH to le,,s than 2 Sample was analyzed within 14 lays of sampling,but beyond the 7 days recommended <br /> i <br /> for Benzene,Toluene and Ethylbenzene <br /> TOC elevation altered due to casing repairs <br /> 4 Laboratory report indicates gasoline C6-C12 <br /> s Laboratory report indicates unidentified hydrocarbons<C16 <br /> 6 Diesel data for MW-1 is not available because there was not enough sample for extraction I <br /> 7i <br /> Laboratory report indicates unidentified hydrocarbons C9-C24 <br /> s MTBE by EPA Method 8260 <br /> s Laboratory report indicates second highest MTBE concentration was confirmed by 8260 Initial BTFX analysis indicated that this well appeared to <br /> have the highest MTBE concentration <br /> 1° Laboratory report indicates discrete peaks <br /> tl BTEX and MTBE by EPA Method 8260 <br /> 12 Laboratory report indicates the observed sample pattern is not typical of diesel/#2 fuelloil _ <br /> 13Laboratory report indicates the observed sample pattern is not typical'of#2 fuel/diesel It elutes in the DRO range earlier than#2 fuel <br /> 14 Laboratory report indicates the observed sample pattern is not typical of#2 fuel/diesel/ It elutes in the DRO range later than#2 fuel <br /> 1s Laboratory report indicates the observed sample pattern is not typical of 42 fuel/diesel/it containtwo patterns in the DRO range,one earlier and one later than#2 fuel <br /> 16 Laboratory confirmed analytical result <br /> 9-8264 96854 Asla/26/05 . <br />