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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 Sampled Elevation Water Thickness water in y MTBE MTBE Continents 8260E benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) MW-8 continued 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 NIK0.50 ND<1.0 -- 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 1-0.17 0.00 6.17 0.60 22800 -- 53.0 ND 281 631 ND ND 07/19/01 I6.34 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 .- -_ 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 07/25/03 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 01/26/04 16.35 12.86 0.00 3.49 1.66 - 12000 37 31 770 1600 -- ND<20 04/27/04 16.35 11.89 0.00 4.46 0.97 -- 12000 13 12 720 1200 -- ND<5.0 07/19/04 16.35 13.20 0.00 3,15 -1.31 -- 28000 20 47 2500 70D0 ND<10 j 10/13/04 16.35 15.38 0.00 0.97 -2.18 -- 8600 ND<10 ND<10 420 900 -- ND<10 MW-10 (Screen Interval in feet:6.0-26.0) 11/21/02 15.31 12.55 0.00 2.76 -- -- ND<50 ND<0.50 0.54 ND<0.50 1.1 -- 0.51 04/25/03 15.31 11.79 0.00 3.52 ._ _. ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 07/25/03 17.50 12.52 0.00 4.98 1.46 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND,2.0 20 10/09/03 15.31 13.53 0.00 1.78 -3.20 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 01205 Page 8 of I 1