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TA It, t <br /> WELL CONCEN RATIONS <br /> Shell Oil Products Company <br /> 141 N. El Dorado Street <br /> Stockton, California <br /> WIC #204-7524-1509 <br /> Sample Measured Corrected SP TPPH B T E X MTBE d0 dO Comments <br /> Date GW Depth (It) GW Elev (ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) mo/L) Method <br /> 10-May-94 NA NA NA 850 13 6.8 53 120 NA NA NA <br /> 16-Aug-94 NA NA NA 450 16 2.9 13 35 NA NA NA / <br /> 14-Nov-94 NA NA NA <50 1.2 <0.5 <0.5 <0.5 NA NA NA <br /> 22-Feb-95 NA NA NA 270 8.0 1.1 10 23 NA NA NA <br /> 24-May-95 NA NA NA 270 8.8 1.6 15 25 NA NA NA <br /> 05-0ct-95 NA NA NA 150 4.7 0.8 10 14 NA NA NA <br /> 15-Nov-95 NA NA NA <50 <0.5 <0.5 <0.5 <0.5 NA NA NA <br /> 27-Mar-96 NA NA NA <50 <0.5 <0.5 <0.5 <0.5 NA NA NA <br /> 23-Aug-96 NA NA NA <50 <0.50 <0.50 <0.50 <0.50 NA NA NA <br /> 25-Oct-96 NA NA NA 120 0.65 <0.50 <0.50 <0.50 5.8 NA NA <br /> 31-Jan-97 NA NA NA <50 1 <0.50 <0.50 1 <0.50 1 <0.50 <2.5 1 NA NA <br /> VEW-1 Top casing elevation (ft): <br /> 05-Sep-96 23.21 NA 0.00 <0.50 <0.50 <0.50 <0.50 <2.5 NA NA <br /> 25-Oct-96 23.69 NA 0.00 <50 <0.50 <0.50 <0.50 0.98 <2.5 4.4 YSI Meter <br /> 31-Jan-97 18.95 NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 (a) 3.2 YSI Meter <br /> 02-Apr-97 20.71 NA 0.00 <50 1.5 2.0 <0.50 1.7 15 2.8 YSI_Meter <br /> VEW-2 Top casing elevation (ft): <br /> 05-Sep-96 NA NA NA NA NA NA NA NA NA NA NA Well dry <br /> 25-Oct-96 NA NA NA NA NA NA NA NA NA NA NA Well dry <br /> 31-Jan-97 19.10 NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 <2.5 1.8 YSI Meter <br /> 02-Apr-97 20.78 NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 4.9 1 1.8 IYSIMaterl <br /> VEW-3 Top casing elevation (ft): <br /> 05-Sep-96 23.91 NA 0.00 <50 <0-50 <0.50 <0.50 <0.50 NA' NANA MTBE by 8260: 4.0 ppb <br /> 25-Oct-96 24.38 I NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 NA' 4.2 YSI Meler MTBE by 8260: 2.5 ppb <br /> N7369 7 <br />