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i Table 2 - HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through June 2005 76 Station 5886 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTB> Sampled Elevation Water Thickness water in 8260B Comments Elevation Elevation benzene Xylenes 8021 B 8260B (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) 64g/1) (µg/l) {µg11) (µg/1) (µg11) (µg/1) MW-6S continued 09/01/98 -037 717 000 -754 -065 ND -- ND ND ND ND 34 52 12/03/98 -037 667 000 -704 050 ND -- ND ND ND ND 65 38 03/01/99 -037 S98 000 -635 069 ND -- ND ND ND ND 55 53 04/15/99 013 643 000 -630 005 06/01/99 0 13 703 000 -690 -060 ND - 0$/16/99 0 13 721 000 -708 -018 ND -- ND ND ND ND 18 20 ND ND ND ND 3 27 D 08/16/99 0 13 721 000 -708 -0 18 11/29/99 0 13 7 15 000 -702 006 ND - - D 11/29/99 0 13 7 15 000 -702 006 _- ND 0 7 ND ND 2 6 4 7 02/28/00 0 13 530 000 -5 17 1 85 ND 05/10100 0 13 638 000 -625 -108 ND ND ND ND ND 210D 1500 08/03/00 0 13 708 000 -695 -070 ND -- ND ND ND ND ]85 226 ND ND ND ND 643 529 11/16/00 0 13 667 000 -654 041 ND ND ND ND ND 20 19 02/05/01 p 13 659 000 -646 008 ND ND ND ND ND 5 46 9 1 04/30/01 0 13 637 000 -624 022 05/07/01 0 13 643 000 -630 -006 ND - 28 2 -- ND Nb ND ND 355 279 06/27/01 0 13 759 000 -746 -1 16 __ _ 07/19/01 0 13 707 000 -694 052 _ ' -- 63 '- 08/20/01 0 13 740 0 00 -7 27 -033 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 27 09/13/01 0 13 730 000 -7 17 0 10 10/19/01 0 13 736 000 -723 -006 _ _- -- ND<5 0 ND<5 0 - 11/19/01 0 13 703 000 -690 -- -- -- 0 33 ND<50 -- ND<0 50 ND<0 50 ND<D 50 ND<0 50 ND<5 0 ND<l 0 12/13/01 0 13 659 000 -646 044 01/19/02 0 13 623 000 -6 10 036 __ -_ == -- ND<2 5 f ND<2 5 5886 Page 16 of 31