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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS February 1999 Through January 2005 Circle K Store 08671 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water to 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (4g11) (µg/1) (41) (µg/1) (µg/1) (µg11) MW-6 continued 02/12/02 1220 2944 000 -1724 090 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 5 ND<2 0 05/06/02 1220 28 83 000 -1663 061 -- ND<50 ND<O 50 ND<0 50 ND<0 50 0 87 -- ND<2 0 08/07/02 1220 3294 0 00 -2074 -411 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 11/04/02 1220 35 16 000 -2296 -222 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 02/03/03 1220 3225 000 -2005 291 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 05/14/03 1220 3026 000 -1806 1 99 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 08/13/03 1220 3477 000 -2257 -451 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 - ND<2 0 11/14/03 1220 3697 000 -2477 -220 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<2 0 02/12/04 1220 33 76 000 -2156 3 21 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 - ND<2 0 05/14/04 1220 3260 000 -2040 1 16 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 08/04/04 1220 35 77 000 -2357 -3 17 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 11/23/04 1220 3587 000 -2367 -0 10 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 01/26/05 1220 3331 000 -21 11 2 56 -- ND<50 ND<0 50 062 ND<0 50 ND<1 0 -- NI3<0 50 MW-7 (Screen Interval in feet DNA) 01/07/02 1434 32 84 000 -1850 -• ND<50 -- ND<0 50 071 ND<0 50 ND<0 50 ND<2 5 ND<0 50 02/12/02 1434 3191 000 -1757 093 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 5 ND<2 0 05/06/02 1434 3132 000 -1698 059 -- ND<50 ND<0 50 ND<0 50 ND<0 50 074 -- ND<2 0 08/07/02 1434 3579 0 00 -2145 -447 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 11/04/02 1434 3784 000 -23 50 -205 - ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 02/03/03 1434 3472 0 00 -2038 3 12 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 05/14/03 1434 32 71 0 00 -18 37 2 01 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 08/13/03 1434 3766 000 -23 32 -495 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<2 0 11/14/03 1434 38 80 000 -2446 -1 14 - ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 02/12/04 1434 3627 000 -2193 2 53 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 08671 Page 6 of 8