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. TAII& i <br /> WELL CONCENTRATIONS <br /> Shell-branded Service Station <br /> 4445 Pershing Avenue <br /> Stockton,California <br /> WIC#204-7524-2408 <br /> Metha Total Organic <br /> Sample Measured Corrected SP TPPH B T E X MTBE nol EDB Lead Lead Coliform Comments <br /> Date GW Depth GW Elev total I fecal <br /> (ft} (ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (MPN/100 ml) <br /> VEW-1 <br /> Oxygenate Compounds by 8260 ND <br /> 21-Nov-97 1917 NA 000 150 <0 50 <0 50 <0 50 0 80 29 <1000 NA NA NA NA NA except MTBE 68 ppb <br /> 10-Feb-98 1601 NA 000 180 14 21 1 41 16001 54 NA NA NA NA NA NA <br /> 20-May-98 1368 NA 000 58 069 <0 50 1 <0 50 053 21 1 NA NA NA NA NA NA <br /> 12-Aug-98 1498 NA 000 <50 <0 50 <0 50 <0 50 1 <0 50 13 NA NA NA NA NA NA <br /> VEW-1 (DUP) <br /> 20-May-98 NA NANA 159001 <0 50 <0 50 <0 50 <0 50 26 NA NA NA NA NA NA <br /> 12-Aug-98 NA NA NA 52 <0 50 <0 50 <0 50 1 <0 501 <2 5 1 NA I NA I NA NA I NA T NA <br /> VEW-2 1 11 <br /> 21-Nov-97 NA NA i NA NA NA NA NA NA NA NA NA NA NA NA NA Well dry <br /> 10-Feb-98 1525 NA 0 00 NA NA NA NA NA NA NA NA NA NA NA NA Insufficient water <br /> 20-May-98 1305 NA 000 <50 <0 50 <0 50 <0 50 <0 50 56 NA NA NA NA NA NA <br /> 12-Aug-98 1423 NA 000 <50 <0 50 1 <0 50 <0 50 <0 50 1 50 NA NA NA NA NA NA <br /> Abbreviations <br /> TPPH=Total Purgeable Petroleum Hydrocarbons carbon range C6 to C12 by EPA Method 8015(Modified) <br /> (previously reported as Total Petroleum Hydrocarbons as Gasoline) <br /> EDB=Ethylene dibromide <br /> BTEX=benzene,toluene,methylbenzene,xylenes by EPA Method 8020 <br /> MTBE=methyl-tertiarty-butyl ether by EPA Method 8020 <br /> <x=Not detected at detection limit of x <br /> NA=Not analyzed or not available <br /> (DUP)=Duplicate sample <br /> MPN/100 ml=Most probable number per 100 milliliters of sample <br /> Notes <br /> Elevation referenced to mean sea level <br /> 240-0837 7 <br />