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a► a � <br /> Table 2 <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 in 82608 benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg11) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) <br /> MW-2 contmued <br /> 07/21/98 11 56 2831 000 -1675 100 490 85 56 29 24 220 180 <br /> 10/14/98 11 56 2926 000 -1770 -095 2900 620 17 36 56 380 190 <br /> 01/25/99 11 56 2843 000 -1687 0 83 2200 -- 610 21 24 72 270 170 <br /> 04/19/99 11 56 26 10 000 -1454 233 1700 -- 440 20 18 57 310 180 <br /> 07/15/99 11 56 2737 000 -15 81 -1 27 620 -- 130 ND<2 5 5 1 17 120 180 <br /> 10/25/99 11 56 2907 000 -1751 -170 710 -- 120 21 6 29 240 200 <br /> 01/27/00 11 56 2853 000 -1697 054 490 -- 62 20 52 24 170 140 <br /> 06/26/00 11 56 25 84 000 -1428 269 489 -- 38 3 ND<0 500 532 107 879 <br /> 09/22/00 11 56 2901 000 -1745 -3 17 8000 -- ND<20 ND<20 ND<20 370 120 100 <br /> 12/26/00 11 56 2890 000 -1734 0 l l 5270 -- 476 107 ND<10 0 21 7 ND<100 785 <br /> 03/07/01 11 56 2859 000 -1703 031 861 -- 428 259 ND<2 50 17 67 1 732 <br /> 06/26/01 11 56 2965 000 -1809 -1 06 400 -- 27 2 1 1 1 10 53 47 <br /> 09/12/01 11 56 3153 000 -1997 -1 88 360 -- 25 16 ND<0 50 84 51 62 <br /> 12/12/01 11 56 31 78 000 -2022 -025 700 -- 77 ND<2 0 ND<2 0 23 75 94 <br /> 03/20/02 11 56 3055 000 -1899 1 23 650 -- 120 21 ND<2 0 17 100 78 <br /> 06/06/02 1 156 31 02 000 -1946 -047 -- 390 53 1 1 ND<0 50 36 -- 56 <br /> 09/30/02 11 56 3354 000 -21 98 -252 -- 10000 900 57 490 1800 -- 60 <br /> 12/30/02 11 56 3305 000 -2149 049 -- 4100 460 ND<2 5 35 250 -- 49 <br /> 03/29/03 11 56 31 99 000 -2043 1 06 -- 960 43 087 57 24 31 <br /> 06/25/03 11 56 3247 000 -2091 -048 -- 410 10 ND<0 50 ND<0 50 3 1 -- 19 <br /> 09/24/03 11 56 34 78 000 -2322 -231 -- 2100 81 ND<2 5 70 97 -- 10 <br /> 12/30/03 11 56 3423 000 -2267 055 -- 370 12 055 ND<0 50 21 -- so <br /> 03/09/04 11 56 3334 000 -21 78 089 -- 200 92 ND<0 50 ND<0 50 3 3 -- 32 <br /> 06/16/04 11 56 3401 000 -2245 -067 -- 240 66 ND<0 50 ND<0 50 20 -- 1 3 <br /> 6981 Page 5 of 37 <br />