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Table 2 ' <br /> Historical Groundwater Gradient Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd Tracy,California <br /> Approximate Approximate <br /> flow hydraulic <br /> Date direction gradient <br /> 6123188 N 0 002 <br /> 9129/88 N 0 002 <br /> 2122189 NE 0 002 <br /> 6/21/89 NE 0002 <br /> 9/18189 N 0 002 <br /> 12/27/89 E <br /> 4118/90 NE 0 001 <br /> 1/10191 NE 0002 <br /> 4/10/91 NE 0 003 <br /> 7110/91 NE 0 002 <br /> 9/24/91 N 0 002 <br /> 1/23/92 N 0 002 <br /> 4/20192 NE 0 003 <br /> 7/8192 N-NE 0 002 <br /> 1 QUM NNE 0 002 <br /> 1118193 ESE(a) 0 004 <br /> 4/14/93 N 0 003 <br /> 8130193 N 0 003 <br /> 10/27/93 N-NE 0003 <br /> 2117194 N E 0 002 <br /> 5120194 NE 0 001 <br /> 1017/94 NE 0 003 <br /> 12/16/94 NE 0 002 <br /> 2128195 NE 0 002 <br /> 4126195 NE 0 003 <br /> 7127/95 N and NE 0 006 <br /> 10/26/95 NE 0 004 <br /> 2112/96 E 0 002 <br /> 4/18196 N E 0 004 <br /> 7/18196 N E 0 002 <br /> 11/15/96 NE 0 002 <br /> 3114/97 E 0 003 <br /> 614197 NE 0 002 <br /> 8111197 NE 0 002 <br /> 11/17/97 N E 0 002 <br /> 3/30/98 N E 00026 <br /> 6125198 NW 0 001 <br /> 9111198 N E 0 003 <br /> 12/15/98 NE 0 003 <br /> (a)Incorrectly reported as WNW in <br /> 1 st quarter 1993 report (April 26, 1993) <br /> 7G600-026-01/Gradient Table <br />