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I II �I <br /> I I <br /> WELL CONCENTRATIONS <br /> Shell-branded Service Station <br /> ,4315 Waterloo Road k <br /> Stockton, California <br /> 1! <br /> I� <br /> MTBE MTBE Depth to Depth to GW SPH DO <br /> Well ID Date TPPH TEPH B T E X $020 8260 TOC Water SPH Elevation Thickness Reading <br /> u !L u IL u IL u IL u �IIL u 1L u IL u IL MSL ft ft MSL ftm <br /> I II If <br /> MW4 104/18/20021 <50 1 NA I <0 50 1 <0 50 1 <0 U 1 <050 1 NA I 083A 3162 1 6139 1 NA 1 .2977 1 NA NA <br /> i f <br /> I j <br /> Abbreviations I' <br /> IS I <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method,82606, prior to July 23,2001,analyzed by EPA Method 8015 <br /> TEPH=Total petroleum hydrocarbons as diesel by modified EPA Method 80115 <br /> BTEX=Benzene,toluene, ethylbenzene,xylenes by EPA Method 82608, prior to July 23,2001,analyzed by EPA Method 8020 <br /> MTBE=Methyl-terhary•butyl ether <br /> TOC=Top of Casing Elevation I= <br /> SPH=Separate-Phase Hydrocarbons I; <br /> GW=Groundwater I <br /> I <br /> DO=Dissolved Oxygen <br /> ug/L=Parts per billion <br /> ppm=Parts per million <br /> msl=Mean sea level - <br /> ft=Feet f <br /> I I 1 <br /> <n=Below detection limit <br /> NA=Not applicable SF <br /> 1 <br /> I , <br /> Notes <br /> Site surveyed December 20,2001, by Virgil Chavez Land Surveying of Vallejo;California <br /> I <br /> G <br /> i r T <br /> I I I <br /> II I p 2 G - <br /> I <br />