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Table 2 <br /> 1� Historical Groundwater Gradient Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Dr,Stockton California <br /> Approximate Approwmate <br /> flow hydraulic <br /> Date direction gradient <br /> 8189 NE 0 003 <br /> 12189 NE 0 003 <br /> 4190 NE 0 002 <br /> 6/90 —(a) —(a) <br /> 10190 NE 0 003 <br /> 2191 NE 0 002 <br /> 4191 NE 0 003 <br /> 7191 —(a) --(a) <br /> 10/8/1991 --(a) —(a) <br /> 1/22/1992 —(a) --(a) <br /> 4!2211992 NE 0 001 <br /> 7/29/1992 —(a) —(a) <br /> 10/29/1992 --(a) —(a) <br /> 1/2711993 NE 0 003 <br /> 4/29/1993 N E 0 003 <br /> 8/5/1993 N E 0 002 <br /> 11/5/1993 NE 0 003 <br /> 3122J1994 --(a) —(a) <br /> 6/27/1994 --(a) —(a) <br /> 9/29/1994 N E 0 002 <br /> 12/8/1994 N E 0 002 <br /> 3/8/1995 N E 0 005 <br /> 611/1995 N E 0 004-0 007 <br /> 9111/1995 --(a) —(a) <br /> 12.15/1995 N E 0 0002-0 001 <br /> 3/18/1996 WNE 0 007 <br /> 6/18/1996 NE to E 0 004 <br /> 9/25/1996 NE to E-SE 0 004 <br /> 12/4/1996 NE to E 0 003 <br /> 3/19/1997 NE to E 0 005 <br /> 6/5/1997 NNE to NE 0 0007 to 0 004 <br /> 8/19/1997 NNE to NE 0 0004 to 0 005 <br /> 3/19/1998 Radial 0 005 <br /> 6124/1998 Radial 0 008 to 0 011 <br /> 9/10/1998 Radial 0 006 to 0 022 <br /> 1 211 7/1 998 Radial 0 002 <br /> 3/10/1999 Radial WNE 00007 <br /> 6/2211999 NW 00009 <br /> (a)Gradient and flow direction could not be <br /> calculated due to influence of remediation <br /> system <br /> 077 41 727 005/Gradient Table <br />