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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 Concentrations in Pg/L <br /> Well Wand Elevation DTW Thickness Elevation GRO/ Ethyl- Total <br /> (feet) (feet) (feet) (feet) TPHg Benzene Toluene Benzene Xylenes MTBE Ethanol DIPS ETBE TAME TBA 1,2-DCA EDB Footnote <br /> Date Monitored <br /> MW-1 cont. <br /> 5/15/2007 12.41 27.84 0.00 -15.43 - - - - <br /> 5/17/2007 28.05 0.00 -15.64 120 <1.0 <1.0 <1.0 <1.0 85 <600 <1.0 <1-0 <1.0 270 6.8 <1.0 <br /> 8/1/2007 28.27 0.00 -15.86 - - _ -- <br /> 8/3/2007 28.27 0.00 -15.86 110 N <0.50 <0.50 <0.50 <030 120 <300 0.86 40.50 <0.50 200 7.0 <0.50 <br /> 11/20/2007 29.06 0.00 -16.65 120 N <0.50 <050 <0.50 <0.50 120 <300 2-1 <0.50 <0.50 630 SS <050 <br /> 1/21/2008 11.49 28.34 0.00 -16.85 - - - <br /> 1/22/2008 - - - 63 <0.50 <050 <0.50 <050 80 <300 1.0 <0.50 <0.50 180 85 <0.50 <br /> 4/7/2008 27.22 0.00 -15.73 - - - -- - - - -- <br /> 4/9/2008 - - - <50 <0.50 <050 <0.50 <0.50 59 <300 0.82 <0.50 <050 99 8.1 <050 <br /> 7/21/2008 28.50 0.00 -17.01 - - - -- - - - -- - <br /> 8/22/2008 - _ - <50 <1.0 <1.0 <1.0 <1.0 69 <600 <1.0 <1.0 <1.0 72 5.4 <1.0 <br /> 10/20/2008 29.91 0.00 -18.42 - - - -- - - - - <br /> 10/22/2008 - - - <50 <1.0 <1.0 <1.0 <1.0 59 <600 41.0 41.0 41.0 140 7s <I.o <br /> 1/19/2009 30.27 0.00 -18.78 - - - - - - -- <br /> 1/22/2009 - - _ X50 <1.0 <1.0 <1.0 <1.0 39 <600 <1.0 <1.0 <1.0 58 7-6 41.0 <br /> 4/20/2009 29.50 0.00 -18.01 - - - -- - - - -- <br /> 4/22/2009 - - - <50 <0.50 <0.50 <D50 4050 23 <300 0.65 <0.50 <0.50 36 6.9 <050 <br /> - - - 38 10- 6.0 --- <br /> 1/7/2010 31.18 0.00 -19.69 450 - __ _ - <br /> 1/5/2011 28.73 0.00 -17.24 - - - - - - - - - 410 15 - <br /> 1/7/2011 - -- -- <50 - - - <0.50 - <br /> 2/1/2012 26.31 0.00 -14.82 - - - -- - - - - - - - -- <br /> 2/2/2012 - -- - <50 - - - - 1.3 - - - _ <10 11 = <br /> 2/25/2013 25.13 0.00 -13.64 - - - - <br /> 3/1/2013 - -- -- <50 - - -- - 0.92" - - - - <10 8.8 - <br /> MW-2 <br /> 9/5/2000 13.11 27.60 0.00 -14.49 1,300 39 1.9 34 100 1,400 - <2.0 <2.0 4.6 7<100 <100 <br /> 2.0 a <br /> 11/2/2000 28.29 0.00 -15.18 11,000 170 <25 1,900 230 3,90D - <100 <100 <100 1003/5/2001 27.64 0.00 -14.53 7,800 110 180 1,600 580 2,900 <10.0 <10.0 <10.0 0.05/8/2001 27.26 0.00 -14.15 8,800 120 150 1,900 920 2,700 - <40.0 <40.0 <40.0 0.07/20/2001 28.56 0.00 -15.45 6,000 60 <50 870 <50 1,900 - <40 <40 <40 40 <br /> Page 19 of 38 <br />