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Table 2.Historical Groundwater Monitoring and Analytical Data <br /> ARCO Station No,4932,16 East Harding Way,Stockton,CA <br /> TOC Product Water Level <br /> Well ID and Elevatbn DTW Thickness Elevation GRO/ Concentrations in Pg/L <br /> Ethyl- Total <br /> Date Monitored (feet) (fee: (feet) (feet( 7PH9 Benzene Toluene Bentene Xylenes MTBE Ethanol DIPE ETRE TAME TBA <br /> SVE-1 Cont. 1,2-DCA EDB Footnote <br /> 3/5/2001 11.84 26.40 0.00 -14.56 72,000 2,100 SO,ODO 2,700 15,000 3,700 <20.0 <20.0 <20.0 <2,000 <20.0 <20.0 <br /> 5/8/2001 26.04 0.00 -14.20 45,000 1,600 5,200 1,900 9,500 4,900 <100 <20. <20. dQ,000 <200 < <br /> 7/20/2001 27.49 0.01 -15.64 _ _ _ _ _ 100 <br /> 10/22/200128.93 0.01 -17.08 -- - - - -- - <br /> 1/15/2002 _ - <br /> 4/11/2002 27.88 0.00 -16.04 87,000 5,200 16,000 3,900 20,000 19,000 - <120 <120 <120 <1,200 <120 <120 NP <br /> 7/12/2002 28.98 0.00 -17.14 85,000 4,100 81900 3,700 18,000 15,000 <200 <200 <200 <2,000 <br /> 11/20/2002 _ -- - - NP <br /> 1/30/2003 _ _ _ _ _ _ __ _ DRY <br /> 4/28/2003 _ <br /> _ _ INA <br /> 0 -17 <br /> 7/29/2003 29.74 0.0 .90 - _ _ _ - - - - - -- - INA <br /> 10/17/2003 _ _ _ - -- -- - - - -- - VOL <br /> 1/12/2004 _ <br /> _ _ DRY <br /> 0 -17 <br /> 4/26/2004 29.80 0.0 .96 - _ _ - -- - - <br /> DRY <br /> 7/13/2004 -- - _ _ _ _ _ _ _ VOL <br /> 10/27/2004 _ DRY <br /> 1/13/2005 _ _ - - _ -_ _ _ _ _ _ DRY <br /> 4/13/2005 _ __ __ _ _ _ __ <br /> _ _ _ - - DRY <br /> 7/11/2005 _ _ - DRY <br /> 0 -17 <br /> 10/5/2005 29.79 0.0 .95 - _ _ _ -- - - - - - - - - DRY <br /> 1/12/2006 - _ - VOL <br /> 4/12/2006 28'68 0.00 -16.84 <50 <0.50 <0.50 <0.50 <050 14 <300 <0.50 <0.50 <0.50 <20 0.85 <0.50 DRY <br /> 7/12/2006 26.58 0.00 -14.74 <50 <0.50 <0.50 <0.50 <050 2.7 <300 <0.50 <0.50 <0.50 <20 0.63 <050 <br /> 10/18/2006 28.12 0.00 -16.28 <50 <0.50 <0.50 <0.50 <0.50 28 <300 <0.50 <0.50 <0.50 <20 1.9 <050 <br /> 3/12/2007 27.15 0.00 -15.31 <50 <0.50 <050 <0.50 <0.50 2.1 <300 <050 <0.50 <0.50 <20 2.3 <0.50 NP <br /> 5/15/2007 26.82 0.00 -14.98 <50 <0.50 <050 <0.50 <0.50 1.9 <300 <0.50 <0.50 <0.50 <20 2.0 <0.50 <br /> 8/1/2007 27.52 0.00 -15.68 - _ <br /> 8/3/2007 27.52 0.00 -15.68 <50 <0.50 <0.50 <0.50 <050 4.7 <300 0.91 <0.50 <0.50 <20 55 <D50 <br /> 11/20/2007 28.40 0.00 -16.56 <50 <0.50 <0.50 <0.50 <0.50 1.4 <300 0.53 <0.50 <0.50 <20 4.2 <050 <br /> 1/21/2008 10.94 27.86 0.00 -16.92 - _ <br /> Page 36 of 38 <br />