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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 Comments Sampled Elevation Water Thickness water in 8260E benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (1g/1) (µg/1) (µg/1} (µg/1) (µg/1) MW-9 continued 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 7000 -- ND<10 MW-10 (Screen Interval in feet:6A-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<I.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<I.0 -- ND,2.0 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<lA -- ND<2.0 01/26/04 17.50 12.45 0.00 5.05 3.27 -- 92 ND<0.50 1.1 2.7 14 -- ND<2.0 04/27/04 17.50 11.24 0.00 6.26 1.21 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 07/19/04 17.50 12.39 0.00 5.11 -1.15 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.Q -- ND<0.50 MW-11 (Screen Interval in feet: 5.0-25.0) 11/21/02 14.18 11.67 0.00 2.51 -- ND<50 ND<0.50 1.1 ND<0.50 1.6 - 0.81 04/25/03 14.18 11.89 0.00 2.29 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -. ND<2.0 07/25/03 14.18 11.82 0.00 2.36 0.07 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 10/09/03 I4.18 12.89 0.00 1.29 -1.07 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 01/26/04 14.18 11.45 0.00 2.73 1.44 -- ND<50 ND<0.50 ND<0.50 ND<0.50 2.3 -- ND<2.0 04/27/04 14.18 10.61 0.00 3.57 0.84 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 07/19/04 14.18 11.86 0.00 2.32 -1.25 -- ND<50 N13<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 MW-12 (Screen Interval in feet:5.0-25.0) 01205 Page 8 of 10