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WELL CONCENTRATIONS <br /> (Former Shell Service Station <br /> 880 Victor Road <br /> Lodi, CA <br /> MTBE MTBE Depth to GW <br /> Well ID Date TPPH B T E X 8020 8260 TOC Water Elevation <br /> u IL) (u L {u IL u IL u IL u IL) uIL) {MSL ft. (MSL <br /> MW-3 01/29/2001 <2,000 <20 <20 <20 <20 NA 12,000 53.87 46.78 7.09 <br /> MW-3 05/23/2001 <1,000 <10 <10 <10 <10 NA 9,800 53.87 47.15 6.72 <br /> MW-3 08/02/2001 <250 <2.5 <2.5 <2.5 <2.5 NA 91100 53.87 48.77 5.10 <br /> Abbreviations: <br /> TPPH =Total petroleum hydrocarbons as gasoline by modified EPA Method 8260B; prior to November 20,2000 analyzed by EPA Method 8015 <br /> h BTEX= benzene,toluene,ethylbenzene, xylenes by EPA Method 8260B; prior to November 20, 2000 analyzed by EPA Method 8020 <br /> MTBE =methyl-tertiary-butyl ether <br /> TOC=Top of Casing Elevation <br /> GW= Groundwater m <br /> ug/L= parts per billion - - <br /> msl= Mean sea level <br /> ft= Feet <br /> 2n = Below detection limit - <br /> NA= Not applicable <br /> Notes: <br /> Survey Data Taken by Virgil Chavez Land Surveying of Vallejo, CA on November 20;1999. - <br /> a =This sample was analyzed outside of EPA recommended hold time. <br /> s <br /> Pape 2 <br />