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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through February 2005 76 Station 5886 I 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 80218 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg11) (leg/l) 641) (1g/1) (ug/1) (µg/1) MW-5D continued 08/04/03 065 7 63 000 -698 -136 -- ND<50 ND<5 0 ND<5 0 ND<5 0 ND 11/20/03 065 710 000 -645 053 -- -- -- -- - Monitored Only 02/11/04 065 670 000 -605 040 -- ND<50 ND<O 50 ND<O 50 0 65 2 0 -- ND<2 0 05/27/04 065 600 000 -5 35 070 -- -- __ _ __ _ Monitored Only 08/30/04 065 720 000 -655 -1 20 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND 11/23/04 065 660 0 00 -5 95 060 -- __ __ __ __ __ __ Sampled Semi-Annually 02/23/05 065 5 61 000 -4 96 099 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<O 50 MW-5S (Screen Interval to feet 5 0-15 0) 05/02/97 -022 698 000 -720 -- ND -- ND ND ND ND ND -- 09/02/97 -0 22 9 21 000 -9 43 -2 23 ND ND ND ND ND ND -- 12/01/97 -022 757 000 -7 79 1 64 ND -- ND ND ND ND ND -- 03/25/98 -022 5 56 000 -5 78 2 01 ND -- ND ND ND ND ND ND 06/17/98 -022 660 0 00 -682 -104 ND -- ND ND ND ND ND ND 09/01/98 -022 748 000 -770 -088 ND ND ND ND ND ND ND 12/03/98 -0 22 674 000 -696 074 ND -- ND ND ND ND 3 4 4 2 03/01/99 -022 5 56 000 -5 78 1 18 ND -- ND ND ND ND 3 9 3 4 04/19/99 025 642 000 -6 17 -- 06/01/99 025 7 24 000 -699 -082 ND -- ND ND ND ND ND ND 08/16/99 025 7 58 000 -733 -034 ND -- ND ND ND ND 69 6 5 11/29/99 0 25 739 000 -714 0 19 ND -- ND 1 I ND 1 1 17 19 02/28/00 025 424 000 -3 99 3 15 ND - ND ND ND ND ND ND 05/10/00 025 641 000 -6 16 -2 17 ND -- ND ND ND ND ND ND 08/03/00 025 734 000 -7 09 -0 93 ND -- ND ND ND ND ND ND 1 1/16/00 025 672 000 -647 062 ND -- ND ND ND ND ND ND 5886 Page 12 of 30