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Table i <br /> Groundwater Monitoring Data and Analytical Remiltc t <br /> ' Chevron Service Station#9-9204 1 <br /> 1775 Tracy Boulevard <br /> a <br /> I Tracy California r <br /> EXPLANATIONS ( w <br /> It <br /> Groundwater monitoring data and laboratory analytical results prior to May 18 2000,were compiled from reports prepared by Blaine Tech Service, Inc <br /> TOC=Top of Casing TP H-6 Total Petroleum Hydrocarbons as Ga-ohne I SVOCc=lSemivolatile Organic Compounds <br /> (fl)=Feet ° B if Benzene VOCs=Volatile Organic Compounds <br /> GWE=Groundwater Elevation I T{�Toluene (ppb)=Parts per billion <br /> (msl)=Mean sea level E IIS Ethylfbenzenc --=11401 Measuri d/Not Analyzed <br /> DTW=Depth to Water X Xylenes QA =Quality ASsurance/Trip Blank <br /> SPHT=Separate Phase Hydrocarbon Thickness MTBE=�IMetbyl tertiary trityl ether <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel TOG—Total Oil and Grease <br /> � 1 <br /> I Chromatogram pattern indicated an unidentified hydrocarbon k l <br /> Z insufficient preservative to reduce the sample PH to less than 2 Sample was analyzed within 14 clays of sampling but beyond the 7 days recommended } <br /> for Benzene Toluene and Ethylbenzene <br /> TOC elevation altered due to casing repairs I If <br /> ° Laboratory report indicates gasoline Ch-C12 II I <br /> s Laboratory report indicates unidentified hydrocarbons<C 16 I i <br /> Diesel data for MW-I isnot available because there was not enough{'sample{ for extraction l <br /> I <br /> 7 Laboratory report indicates unidentified hydrocarbons C9-C24 <br /> MTBE by EPA Method 926n I' n <br /> n Laboratory report indicates second highest MTBE concentration was confirmed by 8260 Initial BTEX analysis indicated that thrs well appeared to <br /> have the highest MTBE concentration i <br /> 1P Laboratory report indicates discrete peaks II 1 - <br /> i I STEX and MTBE by EPA Method 9260 <br /> izLaboratory report indicates the observed sample pattern is not typical of diesel/#2 fuel oit i <br /> � I t <br /> � F <br /> 1 _ <br /> I l € <br /> s <br /> F, <br /> s <br /> hc2R/n1 <br /> 9 R2(A x 6ft54 � <br /> i .I <br />