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I . Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through February 2005 76 Station 5886 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 82608 Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg11) (µg/1) (µg11) (µg11) (41) (µg11) (µg/1) MW-6D continued 12/03/98 -033 672 000 -7 05 051 ND -- ND ND ND ND 11 13 03/01/99 -033 6 01 000 -6 34 0 71 ND ND ND ND ND 15 12 04/15/99 0 17 648 000 -631 __ __ __ _. __ -- 06/01/99 0 17 7 12 000 -6 95 -- ND -- ND ND ND ND 51 61 08/16/99 017 724 000 -707 -0 12 ND -- ND ND ND ND 9 3 88 11/29/99 0 17 720 0 00 -7 03 0 04 ND -- ND 053 ND ND 48 6 9 02/28/00 0 17 5 34 000 -5 17 000 ND -- ND ND ND ND 910 830 D 02/28/00 0 17 5 34 000 -5 17 186 -- -- -- -- -- __ __ -- 05/10/00 0 17 643 000 -626 -109 ND -- ND ND ND ND 5350 5060 08/03/00 0 17 7 13 000 -696 -070 ND -- ND ND ND ND 684 445 11/16/00 0 17 670 000 -6 53 0 43 ND -- ND ND ND ND 57 61 j 02/05/01 0 17 6 64 000 -647 006 ND - ND ND ND ND 36 1 44 04/30/01 0 17 641 000 -624 0 23 - -- -- -_ __ __ __ 223 05/07/01 0 17 648 000 -631 -007 ND -- ND ND ND ND 162 199 06/27/01 0 17 761 000 -744 -1 13 -- -- - -- -- -- 15 -- 07/19/01 017 7 11 000 -694 050 - -- -- -- -- 11 -- 08/20/01 017 743 000 -726 -032 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 72 09/13/01 0 17 734 000 -7 17 009 __ __ __ __ __ 11 -- 10/19/01 0 17 739 000 -722 -0 05 -- - - - -- -- 93 -- 11/19/01 0 17 7 05 000 -688 034 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<0 50 7 2 84 12/13/01 0 17 662 000 -645 043 -- -- -- -- -- -- -- 48 01/18/02 0 17 627 000 -6 10 035 -- -- -- -- ND<2 5 -- 02/11/02 0 17 6 73 000 -656 -046 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 5 ND<2 0 ' 03/21/02 0 17 658 000 -641 0 15 -- -- -- -- 13 -- 5886 Page 14 of 30