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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS October 1998 Through October 2004 Circle K Store 01205 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg11) (41) (µg11) (µg/1) (1g/1) 41g/1) MW-10 continued 01/26/04 17.50 12.45 0.00 5.05 3.27 -- 92 ND<0.50 1.1 2.7 14 -- ND<2.0 04/27/04 17.50 11.24 0.00 6.26 1.21 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 07/19/04 17.50 12.39 0.00 5.11 -1.15 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 10/13/04 I7.50 14.28 0.00 3.22 -1.89 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0,50 MW-11 (Screen Interval in feet:5.0-25.0) 11/21/02 14.18 11.67 0.00 2.51 -- -- ND<50 ND<0.50 1.1 ND<0.50 1.6 0.81 04/25/03 14.18 11.89 0.00 2.29 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<2.0 07/25/03 14.18 11.82 0.00 2.36 0.07 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - ND<2.0 10/09/03 14.18 12.89 0.00 1.29 -1.07 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 01/26/04 14.18 11.45 0.00 2.73 1.44 -- ND<50 ND<0.50 ND<0.50 ND<0.50 2.3 -- ND<2.0 04/27/04 14.18 10.61 0.00 3.57 0.84 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1,0 -- ND<0.50 07/19/04 14.18 11.86 0.00 2.32 -1.25 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 10/13/04 14.18 13.61 0.00 0.57 -1.75 -- ND<50 ND<0.50 ND<0.50 ND<0,50 ND<1.0 -- ND<0.50 MW-12 (Screen Interval in feet:5.0-25.0) 11/21/02 14.25 11.84 0:00 2.41 -- -- ND<50 13 4.2 280 1100 1300 04/25/03 14.25 10.96 0.00 3.29 -- -- 9900 19 ND<10 650 1800 -- 1400 07/25/03 14.25 12.03 0.00 2.22 -1.07 7600 15 ND<10 390 1100 -- 880 10/09/03 14.25 13.16 0.00 1.09 -1.13 16000 37 ND<13 1100 3500 -- 540 01/26/04 14.25 11.47 0.00 2.78 1.69 -- 6100 8.5 ND<5.0 280 880 -- 750 04/27/04 14.25 10.73 0.00 3.52 0.74 -- 9400 14 6.6 470 1600 - 350 07/19/04 14.25 12.09 0.00 2.16 -1.36 -- 8300 10 6.3 450 1500 -- 350 10/13/04 14.25 13.82 0.00 0.43 -1.73 -- 2700 4.4 ND<1.0 130 500 -- 200 MW-13 (Screen Interval in feet:5.0-25.0) 11/21/02 13.86 11.49 0.00 2.37 ND<50 ND<0.50 0.98 ND<0.50 0.50 -- 1.2 01205 Page 9 of 11