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OBLE I • <br /> WELL CONCENTRATIONS <br /> Shell-branded Service Station _ <br /> 3725 Tracy Boulevard <br /> Tracy, California <br /> WIC#204-7884-4901 <br /> Sample Measured Corrected SP TPPH B T E X MTBE Methanol Comments <br /> GW Depth GW Elev <br /> Date (ft) (ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> MW-1A ( DUP) <br /> 20-Feb-93 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 15-Feb-94 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 20-Aug-96 NA NA NA <10000 <100 <100 <100 <100 39000 NA <br /> 07-Feb-97 NA NA NA <1000 <10 <10 <10 <10 3600 NA <br /> Oxygenate Compounds ND except <br /> 19-Nov-97 NA NA NA <500 <5 0 <5 0 <5 0 <5 0 66000 23000 for MTBE 73000ppb <br /> 11-Feb-98 NA NA NA <50 <0 50 <0 50 <0 50 <0 50 1 74 1 <1000 <br /> MW-2A Top casing elevation (ft) 9722 <br /> 26-Sep-89 NA NA NA <50 <0 5 <2 <2 <2 NA NA <br /> 28-Aug-90 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 19-Nov-90 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 26-Feb-91 900 8822 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 17-May-91 919 8803 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 20-Aug-91 951 8771 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 21-Nov-91 946 8776 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 14-Feb-92 868 8854 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 20-Feb-93 770 8952 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 15-Feb-94 907 8815 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 23-Feb-95 892 8830 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 29-Feb-96 815 8907 000 280 27 <0 5 <0 5 <0 5 NA NA <br /> 30-Apr-96 930 8792 000 100 <0 5 <0 5 <0 5 <0 5 NA NA <br /> 20-Aug-96 1010 8712 000 <250 <2 5 <2 5 <2 5 <2 5 490 NA <br /> 07-Feb-97 834 8888 000 <500 <5 0 <5 0 <50 <5 0 1200 NA <br /> 240-0813 2 <br />