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• TAB* <br /> WELL CONCENTRATIONS <br /> Shell Oil Products Company _ <br /> 3725 Tracy Boulevard <br /> Tracy, California <br /> WIC#204-7884-0901 <br /> Sample Measured I Corrected SP TPPH B T E X MTBE Comments <br /> Date GW Depth (ft) GW Elev (ft) (ft) (uglL) (ug/L) (uglL) (ug/L) (ug/L) (ug/L) <br /> 14-Feb-92 952 j 8877 000 <50 <05 <0 5 <0 5 <0 5 NA <br /> 20-Feb-93 8 08 9021 000 <50 <05 <0 5 <0 5 <0 5 NA <br /> 15-Feb-94 999 8830 000 <50 <0 5 <0 5 <0 5 <0 5 NA <br /> 23-Feb-95 962 8867 000 <50 <0 5 <0 5 <0 5 <0 5 NA <br /> 29-Feb-96 852 8977 000 <50 <0 5 j <0 5 <0 5 <0 5 NA <br /> 30-Apr-96 1001 8828 000 <50 <0 5 1 <0 5 <0 5 <0 5 NA <br /> 20-Aug-96 11 16 8713 000 <50 <0 50 <0 50 <0 50 <0 50 30 <br /> 07-Feb-97 j 894 8935 000 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 05-Jun-97 1046 8783 000 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> Abbreviations <br /> NA= Not Analyzed or not available <br /> <x= Not detected at detection limit of x <br /> (DUP)= Duplicate sample <br /> TPPH =Total Purgeable Petroleum Hydrocarbons carbon range C6 to C 12 by EPA Method 8015 (Modified) <br /> (previously reported as Total Petroleum Hydrocarbons as Gasoline) <br /> BTEX=benzene,toluene, ethylbenzene, and xylenes by EPA Method 8020 <br /> MTBE= methyl-tertiary-butyl ether by EPA Method 8020 <br /> SP=Separate Phase hydrocarbon <br /> Notes <br /> ` =The original wells, MW-1 through MW-3, were decommissioned in July 1990 during station reconstruction <br /> They were replaced by MW-1A through MW-3A in August 1990 <br /> 97381 3 <br />