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Table 2 f <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through June 2005 <br /> Former 76 Station 6981 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water to 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg/1) (µg/1) (pg/1) (µg11) (µg/1) (µg11) <br /> MW-7 continued <br /> 01/25/99 11 82 28 80 000 -1698 094 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 40 40 <br /> 04/19/99 11 82 2641 0 00 -1459 239 ND<50 -- 1 3 ND<0 50 ND<0 50 ND<0 50 160 120 <br /> 07/15/99 11 82 2780 000 -1598 -139 ND<50 -- ND<0 50 ND<0 50 ND<0 50 066 260 320 <br /> 10/25/99 11 82 2948 000 -1766 -168 ND<50 -- 38 0 84 ND<0 50 2 3 240 250 <br /> 01/27/00 11 82 2893 000 -17 11 055 ND<50 -- 4 2 0 73 ND<0 50 2 220 210 <br /> 06/26/00 11 82 2623 000 -1441 270 ND<50 0 2 15 1 12 ND<Q 500 152 131 109 <br /> 09/22/00 11 82 2877 000 -1695 -254 ND<50 -- 45 ND<0 50 ND<0 50 12 130 110 <br /> 12/26/00 11 82 28 64 000 -1682 0 13 ND<50 0 -- 224 ND<o 500 ND<a 500 ND<0 500 95 2 733 <br /> 03/07/01 11 82 2835 000 -1653 029 ND<50 0 -- 0 659 ND10 500 ND<O 500 ND<0 500 549 58 5 <br /> 06/26/01 11 82 2936 000 -1754 -101 ND<50 -- 35 ND<0 50 ND<0 50 ND<0 50 130 140 <br /> 09/12/01 11 82 31 31 000 -1949 -195 70 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 200 200 <br /> 12/12/01 11 82 31 54 0 00 -1972 -023 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 150 190 <br /> 03/20/02 11 82 3036 000 -1854 1 18 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 <br /> 06/06/02 11 82 3087 000 -1905 -051 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 <br /> 09/30/02 11 82 3340 000 -2158 -253 -- 360 49 32 10 40 -- 17 <br /> 12/30/02 1182 3290 000 -2108 050 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 <br /> 03/29/03 11 82 31 87 000 -2005 103 -- ND<50 ND<0 50 1 3 ND<0 50 13 ND<2 0 <br /> 06/25/03 1182 3032 0 00 -1850 1 55 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 <br /> 09/24/03 11 82 3458 000 -22 76 -426 -- ND<50 ND<0 50 062 ND<0 50 ND<1 0 ND<2 0 <br /> 12/30/03 11 82 3406 000 -2224 052 - ND<50 056 2 9 070 3 3 -- ND<2 0 <br /> 03/09/04 1182 33 11 000 -21 29 095 -- ND<50 ND<0 50 ND<0 50 ND<0 50 NNI 0 -- ND<2 0 <br /> 06/16/04 11 82 3377 000 -21 95 -066 -- 57 ND<0 50 ND<0 50 ND<0 50 1 5 -- ND<0 50 <br /> 09/20/04 1182 3672 000 -2490 -295 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 <br /> 12/30/04 11 82 3605 000 -2423 067 ND<50 -- 052 ND<0 50 080 3 7 -- ND<0 50 <br /> 6981 Page 16 of 37 <br />