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I <br />� II <br /> WELL CONCENTRATIONS <br /> Former Texaco Service Station <br /> 440 W. Charter Way <br /> Stockton, CA <br /> 1 <br /> MTBE MTBE Depth to GW SPH <br /> Well ID Date TPPH TEPH B T E X 8020 8260 TOC Water Elevation Thickness <br />' u !L u L u IL u /l! u IL u !L u IL u IL MSL ft MSL ft <br /> i <br /> i; Abbreviations j <br /> TPPH =Total petroleum hydrocarbons as gasoline by EPA Method 82608, prior to May 17, 2001,analyzed by EPA Method 8015 <br /> TEPH =Total petroleum hydrocarbons as diesel by modified EPA Method 8015 <br /> I BTEX= Benzene,toluene,ethyibenzene,xylenes by EPA Method 8260B,prior to May 17,2001,analyzed by EPA Method 8020 <br /> MTBE=Methyl-terbary-butyl ether <br /> TOC=Top of Casing Elevabon I <br /> SPH=Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> ug/L=Parts per billion <br /> msl=Mean sea level <br /> ft=Feet <br /> <n=Below detection limit <br /> NA—Not applicable <br /> ND=Not detected at or above the minimum quantitation limit <br /> I� Notes <br /> a= Result reported was generated out of hold time <br /> b=Well not sampled due to lack of access agreement <br /> Site surveyed(except MW-8)on February 20,2002, by Virgil Chavez Land Surveying of Vallejo,California <br /> I <br /> �I P 0 <br /> 28 g <br />