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k <br /> { <br /> Table 1 <br /> Groundwater Monitoring D to and Analytical Results <br /> Chevron�Service tation 99-8264 <br /> 3775 Tracy Boulevard <br /> Tracy,Ca ifornia <br /> EXPLANATIONS <br /> k � k <br /> Groundwater monitoring data and laboratory analytical results prior to May 18,2000,we 1 compiled from reports prepared by Blame Tech Services,Inc <br /> TOC=Top of Casing TPH-G=Total(Petroleum Hydrocarbon,as Gasoline SVOCS=Semrvolatile Organic Compounds <br /> (ft)=Feet <br /> B=Benzene VOCs=Volatile Organic Compound, <br /> _ <br /> GWE=Groundwater Elevation T=Toluene (ppb)=Parts per billion <br /> (msl)=Mean sea level E=Ethylbenzene - <br /> -=Not Measured/Not Analyzed ! <br /> A=Quality Assurance/Trip Blank <br /> DTW=Depth to Water X=Xylenes Q Q y p <br /> SPHT=Separate Phase Hydrocarbon Thickness MTBE=Methyl tertiary butyl.ether <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel TOG=Total Oi 1 and Grease <br /> ' Chromatogram pattern indicated an unidentified hydrocarbon 1 <br /> 2 Insufficient preservative to reduce the sample pH to less than 2 Sample was analyzed within 14 days of sampling,but beyond the 7 days recommended <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 indicate,unidentified hydrocarbons<C16 <br /> 6 Diesel data for MW-1 is not available because there was not enough sample for extraction <br /> 7 Laboratory report indicates unidentified hydrocarbons C9-C24 <br /> 8 MTBE by EPA Method 8260 <br /> 9 Laboratory report indicates second highest MTBE concentration was confirmed by 8260 Inti 1 BTEX analysis indicated that this well appeared to <br /> have the highest MTBE concentration <br /> 10 Laboratory report indicates discrete peaks I <br /> 11 BTEX and MTBE by EPA Method 8260 <br /> 11 Laboratory report indicates the observed sample pattern is not typical of diesel/42 f lel oil <br /> 1; Laboratory report indicates the observed sample pattern is not typical of#2 fuelldiesel it clute3 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 42 fuel <br /> 15Laboratory report indicates the observed sample pattern 1s not typical of 42 fuel/diesel it contains two patterns m the DRO range,one earlier and one later than#2 fuel <br /> 16 Laboratory confirmed analytical result <br /> 17 Laboratory report indicates the observed sample pattern is not typical of 42 fuel/diesel it con ams two patterns in the DRO range,one earlier and one later than#2 fuel and contains <br /> individual peaks eluting 1n the DRO range ' <br /> k <br /> 9-82641*6854 Alf/25/06 <br /> 1 <br />