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• WELL CON TRATIONS <br /> Shell-branded Service Station ' <br /> 4445 North Pershing Avenue <br /> Stockton, CA <br /> { ",Wic #204-7524-2408 <br /> r <br /> i• MTBE MTBE Depthto GW SPH f <br /> Well ID Date TPPH B T i� i� E X 8020 8260 TOC Water Elevation Thickness <br /> (ug/L) (ug/L) t(uglL) (ug/L) (ug/L) (ug/L) I (ug/L) (MSL} (ft ) (MSL) {ft } <br /> VEW-1 (D) 08/12/1998 52 <0 50 f<0 50 1 <0 50 1 <o 50 <2 5 1 NA NA NA M NA NA ! <br /> VEW-2 11/21/1997 Well dry NA ;' NAS �'NA NA NA NA NA NA NA NA E <br /> I <br /> VEW-2 02/10/1998 Insufficient water NAI NA NA NA NA NA 1525 NA 000 f <br /> VEW-2 0512011998" <50 <0 50 <0 50 <O 50 <0 50 56 NA NA 1305 NA 000 <br /> VEW-2 08/12/1998 <50 1 <0 50 <0 50 <O 50 <0 50 50 NA NA 1423 NA 000 <br /> VEW-2 10/28/1998 Insufficient water NAI I NA NA NA NA NA 1483 NA 000 <br /> VEW-2 02/11/1999 <50 <0 50 I;<0 50 1 <0 50 <0 50 <25 NA NA 1190 NA goo <br /> V EW-2 05128/1999 <50 0 <0 500 <0 500 1 <0 500 1<0 500 <5.100 NRA NA 1424 NA 00p � <br /> Abbreviations li <br /> TPPH=Total petroleum hydrocarbons as gasoline by modified EPA Method 8015 <br /> ` BTEX= benzene,toluene, ethylbenzene, xylenes by EPAIIMethod 8020 n <br /> MTBE=methyl-tertiary-butyl ether <br /> TOC=Top of Casing Elevation <br /> # SPH = Separate-Phase Hydrocarbons <br /> GW= Groundwater ' <br /> ug1L= parts per billion - t <br /> ' msl = Mean sea level I I <br /> + ft= Feet <br /> ° <n = Below detection limit <br /> k D = Duplicate sample <br /> { <br /> e8 ' <br />