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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 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg11) (µg11) (µg11) (µg11) (µg/1) (µg11) (41) MW-8 continued 04/25/03 17.26 13.44 0.00 3.82 0.56 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 07/25/03 17.26 14.23 0.00 3.03 -0.79 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 10/09/03 17.25 15.36 0.00 1.89 -1.14 -- ND<50 -ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 01/26/04 17.25 13.21 0.00 4.04 2.15 ND<50 ND<0.50 ND<0.50 ND<0.50. ND<1.0 -- ND<2.0 04/27/04 17.25 12.38 0.00 4.87 0.83 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 07/19/04 17.25 13.92 0.00 3.33 -1.54 -- ND<50 ND<0.50 ND<0.50 0.54 2.1 -- ND<0.50 10/13/04 17.25 16.32 0.00 0.93 -2.40 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 01/10/05 17.25 14.77 0.00 2.48 1.55 -- ND<50 ND<0.50 ND<0.50 0.64 2.0 -- ND<0.50 04/27/05 17.25 12.87 0.00 4.38 1.90 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 07/20/05 17.25 13.57 0.00 3.68 -0.70 -- ND<50 ND<0.50 ND<0.50 0.83 1.3 -- ND<0.50 10/05/05 17.25 14.74 0.00 2.51 -1.17 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 MW-9 (Screen Interval in feet:4.0-23.42) 01/08/01 16.34 10.77 0.00 5.57 -- 29000 -- 62 150 1300 5600 ND ND 04/26/01 16.34 10.17 0.00 6.17 0.60 22800 -- 53.0 ND 281 631 ND ND 07/19/01 16.34 11.07 0.00 5.27 -0.90 27000 -- 45 73 810 3400 ND ND 10/25/01 16.34 12.50 0.00 3.84 -1.43 45000 -- 83 280 3200 12000 ND<500 ND<25 01/29/02 16.34 11.71 0.00 4.63 0.79 14000 -- 80 90 1000 1800 ND<250 ND<12 04/29/02 16.34 11.57 0.00 4.77 0.14 18000 -- 77 150 1000 3000 ND<250 ND<20 07/29/02 16.34 12.59 0.00 3.75 -1.02 29000 -- ND<50 200 2100 4000 ND<200 10/25/02 16.34 13.82 0.00 2.52 -1.23 -- 51000 27 310 2600 10000 -- ND<40 01/24/03 16.34 13.60 0.00 2.74 0.22 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 04/25/03 16.34 12.70 0.00 3.64 0.90 -- 15000 50 34 1300 1700 ND<20 07(2 M 16.34 13.38 0.00 2.96 -0.68 -- 28000 22 120 2000 6000 -- ND<40 10/09/03 16.35 14.52 0.00 1.83 -1.13 - 27000 35 78 1800 6100 -- ND<50 01205 Page 9 of 14