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Y <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through March 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 8260E benzene Xylenes 8021B 8260E <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (pg/1) W/O (pg/1) (µg/1) (Ng/1) (µg/1) (µg/1) <br /> MW-5 continued <br /> 10/23/96 1176 4053 -- -28 77 -185 -- -- _ __ __ __ __ Sampled Semi-annually <br /> 01/20/97 1 1 76 3682 - -2506 3 71 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- 25 <br /> 07/16/97 11 76 3432 -2256 -- ND<50 -- ND<0 5 ND<O 5 ND<0 5 ND<0 5 34 <br /> 10/15/97 1176 36 18 -- -2442 -186 ND<50 - ND<0 5 ND<O 5 ND<0 5 ND<0 5 -- ND<5 0 <br /> 12/08/97 1176 3605 -- -2429 0 13 <br /> 03/05/98 11 76 31 66 - -1990 439 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 23 18 <br /> 05/27/98 11 76 2828 -- -1652 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 8 1 7 8 <br /> 07/21/98 11 76 2840 -- -1664 -012 ND<50 - ND<0 50 2 ND<0 50 21 5 4 5 <br /> 10/14/98 11 76 2942 -1766 -1 02 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 6 2 9 <br /> 01/25/99 11 76 2856 -- -1680 0 86 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 3 5 4 2 <br /> 04/19/99 11 76 26 11 -- -1435 245 ND<50 __ ND<0 50 ND<0 50 ND<0 50 ND<0 50 2 8 2 2 <br /> 07/15/99 11 76 2751 - -1575 -140 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 5 3 6 <br /> 10/25/99 11 76 29 17 - -1741 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 5 13 <br /> 01/27/00 11 76 2870 -- -1694 047 ND<50 - 0 72 078 ND<0 50 1 ND<2 5 ND<2 0 <br /> 06/26/00 11 76 2590 -- -14 14 280 ND<50 0 -- wD<0 500 442 ND<0 500 3 14 ND<5 0 ND<2 0 <br /> 09/22/00 I 1 52 2822 -- -1670 -256 ND<50 - 074 0 6 ND<0 50 ND<0 50 ND<2 5 ND<2 0 <br /> 12/26/00 1152 28 16 -1664 006 ND<50 0 -- 1 14 ND<o 500 ND<a 500 ND<0 500 ND<5 0 ND<2 0 <br /> 03/07/01 11 52 2788 -- -1636 028 ND<50 0 -- 1 ND<o 500 ND<o 500 ND<0 500 ND<5 0 238 <br /> 06/26/01 1152 2885 -- -1733 -097 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 <br /> 09/12/01 1152 3078 -1926 -193 ND<50 -- ND<0 50 9 5 ND<0 50 ND<0 50 ND<5 0 ND<2 0 <br /> 12/12/01 1 1 52 31 06 - -19 54 -028 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<1 0 <br /> 03/20/02 1152 29 77 -- -1825 1 29 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 <br /> 06/06/02 1152 30 25 - -18 73 -048 -- ND<50 ND<0 50 2 4 ND<0 50 2 3 -- ND<2 0 <br /> 09/30/02 1152 3280 -2128 -255 -- ND<50 2 2 5 16 52 -- ND<2 0 <br /> 6981 Page 11 of 36 <br />