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Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through January 2011 <br /> Former 76 Station 6981 <br /> Date TOC Depth to LPH Ground- Change in Comments <br /> Sampled Elevation Water Thickness water Elevation TPH-G TP14-G Ethyl- Total MTBE MTBE <br /> Elevation 8015 (GC/MS) Benzene Toluene benzene Xylenes (8021B) (826013) <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µpal) (µg/1) (µg/1) (µg/l) (µg/1) (µg/1) <br /> MW-15 continued <br /> 9/9/2005 11.37 35.28 0.00 -23.91 -1.99 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 10 <br /> 10/26/2005 11.37 35.23 0.00 -23.86 0.05 99 -- 1.7 4.4 1.1 6.0 -- ND<0.50 <br /> 1/5/2006 11.37 33.75 0.00 -22.38 1.48 ND<350 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 7.9 <br /> 4/10/2006 11.37 30.80 0.00 -19.43 2.95 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 21 <br /> 7/26/2006 11.37 29.28 0.00 -17.91 1.52 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 -- 16 - <br /> 10/19/2006 11.37 31.40 0.00 -20.03 -2.12 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 -- 17 <br /> 1/16/2007 11.37 30.60 0.00 -19.23 0.80 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 -- 29 <br /> 4/10/2007 11.37 30.03 0.00 -18.66 0.57 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 -- 17 <br /> 8/27/2007 11.37 31.89 0.00 -20.52 -1.86 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 10 <br /> 10/29/2007 11.37 32.39 0.00 -21.02 -0.50 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 -- 9.0 <br /> 1/7/2008 11.37 31.64 0.00 -20.27 0.75 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<l.0 7.2 <br /> 5/7/2008 11.37 30.01 0.00 -18.64 1.63 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 5.2 <br /> 8/4/2008 11.37 30.96 0.00 -19.59 -0.95 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 4.8 • <br /> 10/21/2008 11.37 31.56 0.00 -20.19 -0.60 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 3.7 <br /> 2/10/2009 11.37 32.50 0.00 -21.13 -0.94 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 3.2 <br /> 4/16/2009 11.37 32.30 0.00 -20.93 0.20 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 2.5 <br /> 7/28/2009 11.37 33.33 0.00 -21.96 -1.03 ND<50 -- . ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 2.5 <br /> 1/20/2010 11.37 32.92 0.00 -21.55 0.41 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 2.1 <br /> 7/7/2010 11.37 31.22 0.00 -19.85 1.70 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 2.0 <br /> 1/20/2011 11.37 30.67 0.00 -19.30 0.55 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 1.5 <br /> 111T I 1,300 L.L <br /> MW-16 (Screen Interval in feet: 18.0-38.0) <br /> 8/21/1999 11.79 28.45 0.00 -16.66 -- 1900 -- 27 ND<10 26 150 120 69 <br /> 10/25/1999 11.79 29.39 0.00 -17.60 -0.94 3100 -- 55 ND<10 77 360 170 100 <br /> 6981 Page 38 of 54 <br /> ?TRC <br />