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Table 4 <br /> Historical Horizontal Groundwater Gradient Data <br /> Stockton Terminals Technical Committee <br /> Port of Stockton <br /> Stockton, California <br /> Ground- Hydraulic Approximate <br /> water Monitoring Gradient Flow Direction <br /> Zone Date (feet per foot) S SE S/SE E E/SE SW S/SW W/SW W NE N/NW ENE <br /> D 06/13/94 0.0015 1 <br /> 02/12/01 0.002 1 <br /> 05/07/01 0.004 1 -- -- <br /> 08/20/01 0.002 -- -- 1 <br /> 11/29/01 0.002 1 -- <br /> 02/04/02 0.002 1 <br /> 05/01/02 0.002 1 <br /> 07/29/02 0.002 1 <br /> 10/28/02 0.001 1 -- -- <br /> 02/24/03 0.005 to 0.012 1 1 1 <br /> 05/27/03 0.001 1 -- -- <br /> 08/04/03 0.001 1 -- <br /> 11/03/03 0.001 1 <br /> 02/24/04 0.002 1 -- <br /> 05/17/04 0.002 -- 1 <br /> 08/17/04 0.002 1 -- <br /> 11/15/04 0.002 1 -- <br /> 02/14/05 0.001 -- 1 <br /> 05/16/05 0.002 1 -- 1 1 <br /> 08/29/05 0.001 -- 1 -- -- <br /> 11/28/05 0.001 1 -- <br /> 02/06/06 0.005 -- 1 <br /> 05/08/06 0.004 to 0.006 1 1 <br /> 08/07/06 0.003 to 0.004 1 -- -- <br /> 10/30/06 0.003 to 0.007 1 -- 1 <br /> 01/29/07 0.0035 to 0.006 1 -- -- 1 <br /> 04/30/07 0.002 to 0.004 -- 1 <br /> 07/30/07 0.003 to 0.007 1 -- <br /> 10/29/07 0.003 to 0.007 1 -- 1 <br /> 02/04/08 0.004 to 0.008 1 -- 1 <br /> 05/05/08 0.0036 to 0.007 1 1 -- 1 1 <br /> 08/04/08 0.002 to 0.004 -- -- 1 -- -- <br /> 11/03/08 0.001 to 0.005 1 1 -- <br /> 02/02/09 0.003 to 0.007 1 -- -- <br /> 05/04/09 0.001 to 0.004 1 -- -- <br /> 08/03/09 0.001 to 0.003 1 -- -- <br /> 11/02/09 0.001 to 0.003 1 -- -- <br /> 02/01/10 0.001 to 0.003 1 -- -- -- <br /> Average 0.003 r 1 17 0 8 9 5 0 0 2 6 2 1 <br /> 1Q10 STTC gwtables.xlsx Page 4 of 4 <br />