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I i <br /> i <br /> s � <br /> WE 1L CONCENTRATIONS <br /> Shell-branded Service Station <br /> E 3725 South Tracy Boulevard <br /> `� !1 Tracy, CA <br /> 1 f <br /> 1 MTBE MTBE Depth to GW <br /> Well ID Date TPPH TEPH B T E X 8020 8260 DIPE ETBE TAME TBA Methanol Ethanol TOC Water Elevation <br /> u IL u IL u IL u L u IL,1 uk).----..(ug/L) u u (ug/1) u u 11 u u L MSL ft MSL <br /> � II II f I <br /> RW 06/05/2001 73 NA 10 21 0 71 it 56 11 NA <0 50` NA NA I NA NA NA NA NA 534 NA <br /> RW 01122!2003 NA NA NA NA , NA 1; NA NA NA NA NA NA NA NA NA NA 469 NA <br /> RW 01/3012003 <50 NA <0 50 <0 50 <0 501 <0 50 NA <0 50 <2 0 <2 0 1<20 <50 <1,000 <500 NA 474 NA <br /> RW 04/28/2003 Unable to locate NA NA NA i NA NA NA NA NA NA NA NA NA NA NA NA <br /> I <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 8264B,prior to January 23,2001,analyzed by EPA Method 8015 <br /> TEPH=Total petroleum hydrocarbons as diesel by modified EPA Method 80151 <br /> BTEX=Benzene,toluene,ethyibenzene,xylenes by EPA Method 82608,prior o January 23,2001,analyzed by`EPA Method 8020 <br /> MTBE=Methyl-terbary-but}A ether �I <br /> DIPE=Diisopropyl ether <br /> ETRE=Ethyl-t-butyl ether j <br /> TAME=Tort-amyl methyl ether <br /> TBA=Teri-Butanol <br /> TOC=Top of Casing Elevation I - <br /> GW=Groundwater ,I <br /> RW=Rediscovered well <br /> ugtL=Parts per billion <br /> MSL=Mean sea level , I <br /> ft=Feet " <br /> <n=Below detection limit <br /> D=Duplicate sample ,� ! <br /> NA=Not applicable I h <br /> � F <br /> Notes <br /> i <br /> Wells MW-1 through MW-3,were decommissioned In July 1990 during station reconstruction and replaced by MW-1A through MW-3A In August 1990 ~ <br /> Site surveyed February 24,2002,by Virgil Chavez Land Surveying of Vallejo,CalifomiII a <br /> I <br /> II � s <br /> ! i w <br /> I <br /> I <br /> E 1' Pa e 6 <br /> 6 <br />