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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS October 1998 Through July 2004 Circle K Store 01205 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Sampled Elevation Water Thickness water in 8260E Comments benzene Xylenes 8021B 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) (µg/1) (µg11) (µg11) (µg11) (µg/1) (41) MW-8 continued 01/08/01 17.26 11.40 0.00 5.86 -- ND -- ND 1.2 0.95 4.6 ND ND 04/26/01 17.26 10.70 0.00 6.56 0.70 ND ND ND ND ND ND ND 07/19/01 17.26 11.75 0.00 5.51 -1.05 ND -- ND ND ND ND ND ND 10/25/01 17.26 13.32 0.00 3.94 -1,57 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<5.0 ND<I.0 01/29/02 17.26 12.53 0.00 4.73 0.79 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<5.0 ND<2.0 04/29/02 17.26 12.44 0.00 4.82 0.09 ND<50 .. ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<5.0 ND<2.0 07/29/02 17.26 13.56 0.00 3.70 -1.12 -- ND<50 ND<0.50 ND<0.50 ND<0,50 ND<I.0 -- NI3<2.0 10/25/02 17.26 14.81 0.00 2.45 -1.25 -- 1700 0.70 42 83 350 -- ND<2.0 01/24/03 17.26 14.00 0.00 3.26 -- -- 21000 16 35 920 2000 -- ND<10 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 I 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 MW-9 (Screen Interval in feet:4.0-24.0) 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<240 10/25/02 16.34 13.82 0.00 2.52 -1.23 -- I� 51000 27 310 2600 10000 -- ND<40 01205 Page 7 of 10