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WELL CONCENTRATIONS , <br /> Former Texaco Service Station <br /> 440 West Charter Way <br /> Stockton,CA <br /> MTBE MTBE Depth to GW SPH DO <br /> Well ID Date TPPH TEPH B T E x 8026 8260 DIPE ETBE TAME TBA 1,2 DCA EDB Ethanol Methanol TQC Water Elevation Thickness Reading <br /> (ug/L (ug/L u 1L (ug/L u !L u (ug/L (ug/L (ug/L (u/L u (ug/L (ug/L u fL u L u !L MSL ft MSL ftm <br /> Abbreviations <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 /> BTEX=Benzene toluene ethylbenzene xylenes by EPA Method 82608 prior to May 17 2001 analyzed by EPA Method 8020 <br /> MTBE=Methyl tertiary butyl ether <br /> DIPE=Di-isopropyl ether analyzed by EPA Method 82608 <br /> ETBE=Ethyl tertiary butyl ether analyzed by EPA Method 82608 <br /> TAME=Tertiary amyl methyl ether analyzed by EPA Method 8260B <br /> TBA=Tertiary butyl alcohol analyzed by EPA Method 82608 <br /> 1 2-DCA=1 2-Dichloroethans analyzed by EPA Method 82608 <br /> EDB=1,2 Dibromoethane,analyzed by EPA Method 82608 <br /> TOC=Top of Casing Elevation <br /> SPH=Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> DO=Dissolved Oxygen <br /> ppm=Parts per million <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 /> Notes <br /> a=Result reported was generated out of hold time <br /> b=Well not sampled due to lack of access agreement <br /> c=Hydrocarbon does not match pattern of laboratorys standard <br /> d=Hydrocarbon reported is In the early Diesel range and does not match the laboratory s standard <br /> e=The compound reported reflects individual or discrete unidentified peaks in the diesel range The pattern does not match a typical fuel standard <br /> If=Quantity of unknown hydrocarbons in sample based on gasoline <br /> Ethanol and Methanol analyzed by EPA Method 82608 <br /> Site surveyed(except MW 8)on February 20 2002 by Virgil Chavez Land Surveying of Vallejo CA <br /> Wells MW-8 MW 11-82 MW-11 122 M%18 80 MW-18-120 MW-19-81 and MW 19-120 surveyed September 20,2002 by Virgil Chavez Land Surveying of Vallejo CA <br /> P e 26 <br /> I <br />