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i <br /> l WE'LL CONCENTRATIONS <br /> S€hell"i randed Service Station <br /> E ! 6131 Pacific Avenue <br /> r <br /> I I Stockton, CA <br /> Wlc #204-7525-0104 <br /> f MTBE MTBE Depth to Depth to I GW SPH DO <br /> Well ID Date TPPH B T; E �� X 8020 8280 TOC Water ISPH Elevation Thickness Reading <br /> u L u L 3 u L u L u L u L u L SD ft ft SD ft m <br /> [, <br /> VEW-2 11/21/00 68,200 2,530 8,350 1,95011 14,600 <500 NA NA 3318 I NA I NA NA NA <br /> VEW-2 3116101 84,200 7,480 12,600 1,680 if 19,300 <2,500 NA NA 3172 1'NA NA NA NA <br /> VEW-2 5111101 130,000 9,900 14,000 2,00011 23,000 NA <500 NA 3173 C NA NA NA NA <br /> VEW-2 8130101 100,000 2,600 3,900 2,00011 18,000 NA X25 NA 1 3461 f NA NA NA NA <br /> I' <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 8260B, prior to May 11,2001 analyzed by EPA Method 8015 C i <br /> TEPH:Total petroleum hydrocarbons as diesel by modified EPA Method 80115 <br /> BTE K=benzene,toluene, ethylbenzene,xylenes by EPA Method 8260B, poor to May 11,2001, analyzed by EPA Method 8020 <br /> MTBE=methyl-tertiary-butyls ether by EPA Method 8020 <br /> TOC=Top of Casing Elevation <br /> SPH=Separate-Phase Hydrocarbons <br /> GW= Groundwater <br /> DO= Dissolved Oxygen <br /> ug/L=parts per billion r <br /> ppm=parts per million �I <br /> SD= Site datum <br /> ft= Feet ° E <br /> <n=Below detection lima i <br /> NA= Not Applicable o - <br /> Notes ; <br /> = <br /> Chromatogram pattern indicates an unidentified hydrocarbon <br /> a=Analyzed outside of EPA recommended hold time <br /> Dissolved Oxygen readings given prior to well purging l <br /> I� Page 10 <br />