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Attachment B <br /> ' Historical Shallow Groundwater Gradient Information <br /> Former Tosco Bulk Terminal, Stockton,California <br /> ' Gradient Flow Direction <br /> Quarter' Zone feet per foot <br /> ' Second Quarter 2002(May) A 0.004 to 0.01 southwest <br /> Third Quarter 2002(August) A 0.002 to 0.007 southwest <br /> Fourth Quarter 2002(November) A 0.001 to 0.005 southwest <br /> First Quarter 2003(February) A 0.002 to 0.01 southwest <br /> ' Second Quarter 2003(May) A 0.001 to 0.008 southwest <br /> Third Quarter 2003(August) A 0.001 to 0.009 southwest <br /> Fourth Quarter 2003(December) A 0.0008 to 0.006 southwest <br /> First Quarter 2004(February) A 0.0008 to 0.007 southwest <br /> ' B 0.001 to 0.009 southwest <br /> C 0.001 northeast,southwest <br /> Second Quarter 2004(May) A 0.002 to 0.003 southwest <br /> B 0.003 southwest <br /> C 0.001 southwest <br /> Third Quarter 2004(August) A 0.003 southwest <br /> B 0.003 southwest <br /> ' C 0.002 southwest <br /> Fourth Quarter 2004(November) A 0.003 southwest <br /> B 0.002 southwest <br /> C 0.002 southwest <br /> ' First Quarter 2005(February) A 0.001 west <br /> B 0.001 west southwest <br /> C 0.0003 southwest <br /> Second Quarter 2005(May) A 0.002 southwest <br /> B 0.002 southwest <br /> C 0.001 southwest <br /> Third Quarter 2005(September) A 0.002 southwest <br /> B 0.003 southwest <br /> C 0.001 southwest <br /> Fourth Quarter 2005(November) A 0.002 to 0.005 southwest <br /> B 0.003 southwest <br /> ' C 0.001 southwest <br /> First Quarter 2006(February) A 0.002 to 0.013 southwest <br /> B 0.002 southwest <br /> C 0.001 southwest <br /> Second Quarter 2006(May) A 0.002 to 0.005 south to southwest <br /> B 0.002 south to southwest <br /> C 0.001 south to southwest <br /> ' Third Quarter 2006(August) A 0.003 to 0.005 south to southwest <br /> B 0.003 southwest <br /> C 0.001 southwest <br /> Fourth Quarter 2006(November) A 0.003 to 0.005 southwest <br /> ' B 0.003 southwest <br /> C 0.001 southwest <br /> First Quarter 2007(February) A jO.002 <br /> HO.O04 <br /> 3 southwest <br /> Bsouthwest <br /> Csouthwest <br /> Second Quarter 2007(May) Asouthwest <br /> B southwest <br /> Csouthwest <br /> Third Quarter 2007(August) A 4 southwest <br /> B 3 southwest <br /> 0. southwest <br /> Fourth Quarter 2007(November) A 0.004 west <br /> ' 8 0.060 southeast <br /> C 0.030 southeast <br /> First Quarter 2008 A 0.001 southwest <br /> ' caoocumen and tdae WOW stcaaom10201200888 stocinon done Page 1 oft <br />