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Table 3-1 <br /> Summary of Vertical Hydraulic Gradients <br /> Former Unocal Service Station No. 0187 <br /> 437 East Minor Avenue <br /> Stockton, California <br /> NP-1-22 NP-1-65 NP-1-111 <br /> DTW DTW DTW Vertical Gradient' <br /> DATE (feet) DATE (feet) DATE (feet) A to B B to C <br /> 02/05/99 25.39 02/05/99 25.37 02/05/99 25.55 0.000 -0.004 <br /> 05/07/99 24.18 05/07/99 24.19 05/07/99 24.36 0.000 -0.004 <br /> 08/20/99 24.60 08/20/99 24.80 08/20/99 25.24 -0.005 -0.010 <br /> 11/23/99 25.57 11/23/99 25.64 11/23/99 25.91 -0.002 -0.006 <br /> 02/22/00 24.81 02/22/00 24.90 02/22/00 25.22 .0.002 -0.007 <br /> 05/30/00 23.51 05/30/00 23.57 05/30/00 23.79 -0.001 -0.005 <br /> 08/31/00 24.23 08/31/00 24.47 08131/00 24.96 -0.006 -0.011 <br /> 11/20/001 24.78 11/20/2000 24.92 11/20/00 25.26 -0.003 -0.008 <br /> 02/26/01 24.42 02/26/01 24.35 02/26/01 24.82 0.002 -0.011 <br /> 05/14/01 24.44 05/14/01 24.43 05/14/01 24.70 0.000 -0.006 <br /> 08/13/01 25.04 08/13/01 25.57 08/13/01 26.01 -0.013 -0.010 <br /> 11/26/01 26.26 11/26/01 26.39 11/26/01 26.74 -0.003 -0.008 <br /> 02/25/02 25.43 02/25/02 25.59 02/25/02 26.06 -0.004 -0.011 <br /> 05/07/02 25.58 05/07/02 25.53 05/07/02 26.33 0.001 -0.018 <br /> 08/12/02 26.02 08/12/02 27.65 08/12/02 28.78 -0.040 -0.026 <br /> 11/05/02 27.50 11/05/02 27.92 11/05/02 28.74 -0.010 -0.019 <br /> 02/04/03 26.73 02/04/03 28.03 02/04/03 28.32 -0.032 -0.007 <br /> 05/27/03 27.61 05/27/03 27.84 05/27/03 28.60 -0.006 -0.017 <br /> 08/26/03 28.96 08/26/03 29.19 08/26/03 29.94 -0.006 -0.017 <br /> 12/01/03 29.61 12/02/03 29.56 12/02/03 40.02 0.001 <br /> 02/16/04 28.93 02/16/04 28.96 02/16/04 29.18 -0.001 -0.005 <br /> 04/19/04 28.31 04/19/04 28.49 04/19/04 28.78 -0.004 -0.007 <br /> 08/16/04 29.69 08/16/04 30.23 08/16/04 31.12 -0.013 -0.020 <br /> 11/15/04 30.24 11/15/04 30.64 11/15/04 30.83 -0.010 -0.004 <br /> 02/14/05 29.00 02/14/05 28.45 02/14/05 29.71 0.014 -0.029 <br /> Median -0.003 -0.009 <br /> Average -0.006 -0.011 <br /> Maximum 0.014 -0.004 <br /> Minimum -0.040 -0.029 <br /> Interpretation Down All Down <br /> Notes: <br /> "Calculated as the difference in head divided by the vertical separation between well screens. <br /> �i Downward gradients are indicated by negative values. <br /> oil <br /> J:1Rem_Eng\Project FilesIP60(6000-6999)16940-UNOCAL Portfolio Closure16940- UNOCAL Portfolio ClosurelSite 0187-Stockton East <br /> MinorlCSM ReportlSection 3 Tables.xis3-1 <br /> { <br /> �E <br />