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r f <br /> j WELL CONCENTRATIONS <br /> Shell-branded Service,Station <br /> { X6131 Pacific Avenue <br /> Stockton, CA <br /> G 3Vic #204-7525-0104 <br /> MTBE MTBE Depth to Depth to k GW SPH DO <br /> W all ID Date TPPH B T E I Ix 8020 8260 TOC Water SPH Elevation Thickness Reading <br /> 1 (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (MSL) (ft) (ft) f{MSL} (ft) (ppm) <br /> rV <br /> :W-2 11/23/1998 120,000 3,600 17,000 1,600f 24,000 <1,000 <200 NA 3441 �' NA 1 NA NA NA <br /> EW-2 02/24/1999 75,000 2,400 14,000 1,400 ,14,000 310 <100 NA 3247 I NA NA NA NA <br /> EW-2 05/13/1999 117,000 3,130 14,100 1,5001 22,000 <1,250 <125 NA 3139 1, NA ( NA NA NA <br /> VEW-2 08/2011999 110,000 3,240 15,600 1,7001 ',19,100 <2,500 636 NA 3448 1 NA 1 NA NA NA <br /> VEW-2 11/02/1999 115,000 4,130 25,200 <25011 23,200 <1,250 NA NA 3423 1 NA NA NA NA <br /> VEW-2 02/03/2000 88,900 3,090 10,300 1,8501 20,400 <500 NA NA 3255 { NA 1 NA NA NA <br /> t 2Q t7 <br /> dA � . 3. 45 .NJW TWID P. , IVB+ <br /> Abbreviations . <br /> TPPH=Total petroleum hydrocarbons as gasoline by modified EPA Method 8015 <br /> TEPH =Total petroleum hydrocarbons as diesel by modified EPA Method 8015 ' <br /> BTEX=benzene,toluene,ethyfbenzens,xylenes by EPA Method 8020 <br /> MTBE=methyl tertiary-butyl ether by EPA Method 8020 <br /> TOC=Top of Casing Elevation <br /> SPH =Separate-Phase Hydrocarbons J a <br /> GW=Groundwater � <br /> i <br /> DO = Dissolved Oxygen l <br /> ug/L =parts per billion d <br /> ppm=parts per million <br /> msl = Mean sea level <br /> ft=f=eet 1 <br /> <n= Below detection limit <br /> NA =Not Applicable <br /> Notes <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 <br /> l ' _ <br /> P 8 <br />