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i <br /> WELL CONCENTRATIONS <br /> Shell Service Station <br /> 1160 West Yosemite Avenue <br /> Manteca, CA <br /> MTBE Depth to GW <br /> Well ID Date TPPH B T E X 8260 DIPS ETBE TAME TBA 1,2-DCA EDB TOC Water Elevation <br /> u IL (ug/L u IL (ugll-1 hin1l I ti Il I AmIllu /L u /L ..-IF N i...ILN /..-11 MSL ft MSL <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by modified EPA Method 82606 <br /> BTEX=Benzene,toluene,ethylbenzene,xylenes by EPA Method 8260B <br /> MTBE=Methyl tertiary butyl ether <br /> DIPE=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> TBA=Tertiary butyl alcohol <br /> F <br /> 1,2-DCA= 1,2-Dichloroethane <br /> EDB= Ethylene Dibromide <br /> TOC=Top of Casing Elevation <br /> GW=Groundwater <br /> uglL=Parts per billion { <br /> MSL=Mean sea level <br /> ft =Feet <br /> <n= Below detection limit <br /> NA=Not applicable <br />'h Notes <br /> Site surveyed June 4,2004 by Virgil Chavez Land Surveying of Vallejo,CA <br /> I <br /> i . P2 <br />