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WELL CONSTRATiONS <br /> Shell-branded Service Station <br /> 4315 Waterloo Road <br /> Stockton, CA <br /> MTBE I MTBE Depth to GW <br /> Well ID ' Date TPPHLEPLH B T E X 8020 826D DIPS ETRE TAME TBA 1,2-DCA EDB Ethanol TOC Water Elevation <br /> u 1L u 1L u u L u L u IL u L u L u L u u L u u L u IL M5L ft MSL <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82608,prior to July 23,2001,analyzed by EPA Method 8015 <br /> TEPH=Total petroleum hydrocarbons as diesel by modified EPA Method 8015 <br /> BTEX=Benzene,toluene,ethylbenzene,xylenes by EPA Method 82606,prior to July 23,2001,analyzed by EPA Method 8020 <br /> MTBE=Methyl-tertiary-butyl ether <br /> 1,2 DCA=1,2-Dichloroethans <br /> EDB=1,2-Dibromoethane <br /> DIPS=Ditsopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> TBA=Tertiary butanol <br /> TOC=Top of Casing Elevation <br /> SPH=Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> DO Dissolved Oxygen <br /> ug/L=Parts per billion <br /> ppm=Parts per million <br /> MSL=Mean sea level <br /> ft=Feet <br /> <n=Below detection limit <br /> NA=Not applicable <br /> Notes <br /> a=TOC elevation altered during wellhead maintenance <br /> b=Hydrocarbon does not match pattern of laboratory's standard <br /> Site surveyed December 20,2001,by Virgil Chavez Land Surveying of Vallejo,California <br /> t <br /> Page 3 <br />