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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS October 1998 Through October 2005 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 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg/1) (µg/1) (µg/1) (11g11) (µg/1) (µg/l) I MW-3 continued 10125/0l 18.16 14.32 0.00 3.84 -1.52 930 -- 6.3 ND<2.5 38 10 ND<25 ND<1.0 I 129102 18.16 13.58 0.00 4.58 0.74 2900 -- 19 ND<5.0 140 37 ND<50 ND<2.0 04/29/02 18.16 13.42 0.00 4.74 0.16 2500 -- 13 ND<2.5 120 23 ND<25 ND<2.0 07/29/02 18.16 14.45 0.00 3.71 -1.03 -- 2000 ND<0.50 14D<0.50 84 5.9 -- ND<2.0 10/25/02 18.16 15.84 0.00 2.32 -1.39 __ 7900 ND<5.0 ND<5.0 360 69 -- ND<20 01/24/03 18.16 14.60 0.00 3.56 1.24 -- 5100 ND<5.0 ND<5.0 190 15 -- ND<20 04/25/03 18.16 14.47 0.00 3.69 0.13 -- 1700 ND<5.0 ND<5.0 41 ND<10 ND<20 07/25/03 18.16 15.19 0.00 2.97 -0.72 -- 2500 ND<0.50. ND<0.50 25 1.3 ND<2.0 10/09/03 18.16 16.39 0.00 1.77 -1.20 -- 260 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 01/26/04 18.16 14.49 0.00 3.67 1.90 1500 ND<0.50 ND<0.50 37 I.1 ND<2.0 04/27/04 18.16 13.55 0.00 4.61 0.94 -- 1200 ND<0.50 ND<0.50 80 4.4 ND<0.50 07/19/04 18.16 14.93 0.00 3.23 -1.38 -- 570 ND<0.50 ND<0.50 15 2.0 ND<0.50 10/13/04 18.16 17.30 0.00 0.86 -2.37 -- 120 ND<0.50 ND<0.50 1.4 ND<1.0 -- ND<0.50 01/10/05 18.16 15.87 0.00 2.29 1.43 390 ND<0.50 ND<0.50 5.6 1.1 -- ND<0.50 04/27/05 18.16 13.85 0.00 4.31 2.02 -- 310 ND<0.50 ND<0.50 14 1.2 __ ND<0.50 07/20/05 18.16 14.51 0.00 3.65 -0.66 -- 190 ND<0.50 ND<0.50 8.0 3.5 -- ND<0.50 10/05/05 18.16 15.66 0.00 2.50 -1.15 -- 190 ND<0.50 ND<0.50 3.1 ND<1.0 ND<0.50 MW-4 (screen Interval in feet:8.0-28.0) 10/08/98 17.75 11.29 0.00 6.46 -- 7600 -- 6.6 2.3 430 860 ND 01/25/99 17.75 11.74 0.00 6.01 -0.45 1300 10 ND 30 29 ND -- 04/29/99 17.75 10.25 0.00 7.50 1.49 ND -- ND ND ND ND ND -- 07/16/99 17.75 11.12 0.00 6.63 -0.87 290 -- 1.1 ND 5.4 8.5 ND ND 10(21199 17.75 11.36 0.00 6.39 -0.24 320 2.5 ND 7.4 7.3 ND ND 01/31/00 17.75 10.36 0.00 7.39 1.00 2600 11 ND 130 160 ND ND 01205 Page 4 of 14