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• WELL CONATRATIONS <br /> Shell-branded Service Station <br /> 2494 Fremont Street <br /> Stockton, CA <br /> Wic #204-7524-1806 <br /> MTBE MTBE DePth to GW Thicknes <br /> Well ID Date TPPH B T E X 8020 8260 TOC Water Elevation s <br /> u IL u IL u IL u IL u IL u IL u IL MSL} ft MSL ft <br /> S4 105/14/20011 <50 1 <0 50 <0 50 1 <0 50 1 <0 50 NA <0 50 1 21 62 4743 -2581 NA <br /> S-4 06130/20011 <50 1 <0 50 <0 50 1 <0 50 1 <0!L_L NA <0 50 1 2162 51 32 -2970 NA <br /> Abbreviations <br /> TPPH =Total petroleum hydrocarbons as gasoline by modified EPA Method 8260B, prior to May 14,2001 analyzed by EPA Method 8015, except where noted <br /> BTEX= benzene,toluene, ethylbenzene,xylenes by EPA Method 82608, prior to May 14, 2001,analyzed by EPA Method 8020, except where noted <br /> MTBE =methyl-tertiary-butyl ether <br /> TOC=Top of Casing Elevation <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 /> I <br /> Notes <br /> a= Pre-Development water level <br /> b= Post-Development water level <br /> c=This sample analyzed outside of EPA recommended holding bme <br /> d=TPPH and BTEX analyzed by EPA Method 8260E <br /> Site surveyed January 8,2000 by Virgil Chavez Land Surveying of Vallejo,California <br /> Page 3 <br />