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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS October 1998 Through July 2004 Circle K Store 01205 ' i i Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Continents Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (µg/1) (41) (µg/1) (µg/1) MW-3 (Screen Interval in feet: 8.0-28.0) 10/08/98 18.16 11.67 0.00 6.49 -- 11000 -- 14 3.4 580 560 -- ND 01/25/99 18.16 12.17 0.00 5.99 -0.50 6100 -- 28 ND 220 190 ND 04/29/99 18.16 10.65 0.00 7.51 1.52 150 1.1 ND ND 1.5 ND - 07/16/99 18.16 11.54 0.00 6.62 -0.89 10000 -- ND ND 380 200 ND ND 10/21/99 18.16 11.78 0.00 6.38 -0.24 5500 -- 19 3.2 190 130 13 ND 01/31/00 18.16 10.84 0.00 7.32 094 8500 -- 27 ND 460 270 ND 19 04/10/00 18.16 8.91 0.00 9.25 1.93 2250 -- 9.6 ND 98.2 45 ND ND 07/05/00 18.16 9.79 0.00 8.37 -0.88 3640 -- 21.9 ND 190 67.1 ND ND 10/20/00 18.16 11.91 0.00 6.25 -2.12 3750 -- ND ND 150 51.9 ND ND 01/08/01 18.16 12.48 0.00 5.68 -0.57 2100 -- 9.3 3.9 32 7.8 6.9 ND 04/26/01 18.16 11.84 0.00 6.32 0.64 5350 -- 14.9 ND 256 101 ND ND 07/19/01 18.16 12.80 0.00 5.36 -0.96 3900 -- 15 ND 140 52 ND ND 10/25/01 18.16 14.32 0.00 3.84 -1.52 930 -- 6.3 ND<2.5 38 10 ND<25 ND<1.0 01/29/02 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 ND<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 -- -- 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 3.67 190 - 1500 ND<0.50 ND<0.50 37 1.1 ND<2.0 04/27/04 18.16 13.55 0.00 4.61 ._ 094 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 01205 Page 3 of 10