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Table 1 <br /> Ground w ater+Monitoring Data and Analytical Results <br /> ' Chevron Service Station 99-8264 I <br /> 3775 Tracy Boulevard I <br /> 'I Tracy,California <br /> EXPLANATIONS <br /> , I i <br /> Groundwater monitoring data and laboratory analytical results prior to May 18,1-2000,were compiled from reports prepared by Blaine Tech Services,Inc <br /> TOC=Top of Casing i TPH-Gid=Total Petroleum Hydrocarbons as Gasoline SVOCs=Semivolatile Organic Compounds <br /> (f3)=Feet + B=Benzene _ VOCs=Volatile Organic Compounds <br /> GWE=Groundwater Elevation T=Toluene (ppb)=Parts per billion <br /> (msl)=Mean sea level E=Etliylbenzene --=Not Measured/Not Analyzed <br /> ti <br /> DTW=Depth to Water X=Xy'tenes QA=Quality Assurancetrnp Blank <br /> SPHT=Separate Phase Hydrocarbon Thickness MTBE I Methyl tertiary butyl ether <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel ` TOG=Total Oil and Grease <br /> ' Chromatogram pattern indicated an unidentified hydrocarbon I j <br /> z 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 j �I <br /> a TOC elevation altered due to casing repair. <br /> ' Laboratory report indicates gasoline C6-C12 , j! <br /> S Laboratory report indicates unidentified hydrocarbons<C161, 16 i <br /> 5 Diesel data for MW-1 is not available because there was not enough sample for extraction <br /> z <br /> Laboratory report indicates unidentified hydrocarbons C9-C24 � I <br /> e MTBE by EPA Method 8260 <br /> v 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 /> '0 Laboratory report indicates discrete peaks I, <br /> 11 BTEX and MT13E by EPA Method 8260 <br /> 12 Laboratory report indicates the observed sample pattern is not typical of diesel/#2 fuel oil <br /> .I <br /> ,i <br /> E � 4 <br /> — <br /> if 1i � <br /> e <br /> ti <br /> i <br /> 9-8264086854 <br /> 1/27/03 <br />