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fi WEu CONCENTRATIONS <br /> Shell-branded Service Station <br /> 6131 Pacific Avenue <br /> I Stockton, CA <br /> r <br /> r II <br /> MTBE MTB5GW SP <br /> Well!D Date TPPH B T E X 8020 8280 DIPE ETBE TAME TBA Ethanol Methanol 1;2-DCA EDB TOC Water Elevation Thickness <br /> WWI-) (u/L) (uq/6 u IL u IL ..lu /L u tl u 1L u IL u IL (u/L u IL u /L u IL u 1LMSL ft MSL ft <br /> It II f 1 1 <br /> VEW-2 12/10/2001 82 000 2 400 5,300 2 700 16 000 NA 1 <2511 <25 <25 <25 <250 <500 NA l NA NA 1314 3373 -2059 NA <br /> VEW 2 02/05/2002 170 000 9200 14 000 2200 27 000 NA I[<2,500 NA NA NA NA NA NA 1 NA NA 1314 3161 -1847 NA <br /> VEW 2 06/03/2002 90 000 2 300 3 000 ' 2 600 18 000 NA 11 <5001 NA NA NA NA NA NA 1 NA NA 13 14 3255 -1941 NA <br /> VEW 2 09/03/2002 100 000 2 900 3 900 1 2 100 21 000 NA 11 <5011 <50 <50 <50 <500 NA NA L NA NA 13 14 3549 -2235 NA <br /> VEW-2 11/07/2002 68 000 1200 660 2200 14 000 NA 11 <2501 NA NA NA NA NA NA I NA NA 13 14 36 13 -2299 NA <br /> VEW-2 02/21/2003 82 000 1 900 1 500 2 600 16 000 1 NA 11 <2501 1 NA NA I NA NA NA NA 1 NA I NA 13 14 3505 -2191 NA <br /> VEW-2 03/14/2003 NA NA NA NA NA I NA 11 NA 11 NA NA NAS NA NA NA NA NA 1314 3470 -21,96 NA <br /> VEW-2 05/0712003 82 000 1 600 1 100 3 000 16 000 NA 11 <2501 NA NA NA NA NA NA 3 NA NA 13 14, 3424 -21 10 NA <br /> VEW-2 08/26/2003 110 000 2 400 3 600 .3000 19 000 NA 11 <5011 <200 <200 <200 <500 NA NA 1 <50 <50 1314 3725 24 11 NA <br /> VEW-2 1112412003 110 000 2 800 4 700 3 100 20 000 NA 11 <1001 NA NA NA NA NA NA 1 <100 <100 1314 378-4 2470 NA <br /> VEW-2 0212712004 78 000 2 300 5 boo 3 500 24 000 NA i1 <50 11 NA NA NA NA NA NA 1 <5o <50 1314 3624 -2310 NA <br /> VEW 2 0512112004 1 150,000, 4,600 9,200 3,700 25,000 NA I1 <1001 NA NA I NA NA NA NA i <100 I <br /> <100 1314 3663 -23 49 NA <br /> Abbreviations f <br /> II ? s <br /> TPPH=Total petroleum hydrocarbons as gasoline b EPA Method 8260B nor to May 11 001 analyzed ~ <br /> Y p y ,a�a�yzed by EPA Method 8015 <br /> TEPH=Total petroleum hydrocarbons as diesel by modified EPA Method 8015 f <br /> BTEX=Benzene toluene,ethy;benzene xylenes by EPA Method 8260B,prior to May 11,2001 analyzed by EPA Method 8020 j <br /> MTBE=Methyl tertiary butyl ether <br /> DIPS=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <k <br /> TAME=Tertiary amyl methyl ether F <br /> 1 2-DCA=1 2-Dichloroethane <br /> EDS=Ethylene dibromide <br /> TOC=Top of Casing Elevation <br /> SPH=Separate-Phase Hydrocarbons ! - <br /> 3 <br /> GW=Groundwater <br /> ug1L=Parts per billion {� � <br /> MSL=Mean Sea Level } <br /> ft =Feet <br /> <n=Below detection limit I <br /> NA=Not Applicable <br /> r <br /> Page 11 <br />