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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through August 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 8260B Elevation Elevation (feet) (feet) (fect) (feet) (feet) (µg11) (µg/1) (µg11) (µ81i) (µg/1) (µg11) (µg11) (µ8J1) MW-4S continued 08/30/04 045 697 000 -652 -021 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 -- ND<0 5 11/23/04 045 650 000 -605 047 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<O 50 02/23/05 0 45 607 000 -562 043 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 06/06/05 045 6 53 000 -608 -046 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 08/22/05 045 711 000 -666 -058 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 MW-51) (Screen Interval in feet 20 5-24 0) 05/02/97 018 738 000 -720 -- ND -- ND ND ND ND ND -- 09/02/97 018 960 000 -942 -2 22 ND -- ND ND ND ND ND -- 12/01/97 0 18 797 000 -779 163 ND -- ND ND ND ND ND -- 03/25/98 0 18 596 000 -578 201 ND ND ND ND ND ND ND 06/17/98 018 699 000 -681 -103 ND -- ND 0 61 ND 055 ND ND 09/01/98 0 18 789 000 -771 -090 ND -- ND ND ND ND ND ND 12/03/98 018 7 13 000 -695 076 ND -- ND ND ND ND 3 2 2 7 03/01/99 018 597 000 -579 1 16 ND -- ND ND ND ND ND ND 04/19/99 065 6 81 000 -616 -037 -- -- -- -- -- -- -- 06101l99 0 65 7 63 000 -698 -082 ND -- 52 ND ND ND ND ND 08/16/99 065 796 000 -731 -033 ND -- ND ND ND ND ND ND 11/29/99 0 65 7 78 000 -7 13 0 18 ND -- ND ND ND ND ND 4 7 D 11/29/99 065 778 000 -7 13 0 18 -- -- -- -- -- -- -- -- 02/28/00 065 4 64 000 -399 3 14 ND -- ND ND ND ND ND ND 05/10/00 0 65 681 000 -616 -217 ND -- ND ND ND ND ND ND 08/03/00 065 7 73 000 -708 -092 ND -- ND ND ND ND ND ND 11/16100 0 65 711 000 -646 062 ND ND ND ND ND ND ND 02/05/01 0 65 680 000 -615 031 ND -- ND ND ND ND ND ND 5886 Page 11 of 32