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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through November 2004 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 8260E benzene Xylenes 8021E 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (Ag/1) (µg/1) (Pg/l) (µg l) (µg/1 I ) (Nl;II) (ugll) MW-41) continued 08/16/99 023 797 000 -7 74 -030 -- -- -- -- - 4 6 4 8 11/29/99 023 7 83 000 -760 0 14 -- - -- 0 5 -- 4 8 7 8 02/28/00 023 523 000 -500 2 60 - 05/10/00 023 698 000 -6 75 -175 08/03/00 023 7 80 000 -757 -082 __ __ _ 6 01 545 11/16/00 023 721 000 -698 059 - -- -- -- - 5 1 4 9 02/05/01 0 23 7 04 000 -681 0 17 -- -- - - 2 89 55 04/30/01 023 692 000 -669 0 12 -- - -- -- -- -- 271 05/07/01 023 696 000 -6 73 -004 - 06/27/01 023 768 000 -745 -072 - -- -- -- -- ND<5 0 -- 07/19/01 023 7 61 000 -738 007 -- _ 17 -- 08/20/01 023 792 000 -769 -031 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 5 1 4 2 09/13/01 023 7 87 000 -764 0 05 -- - ND<5 0 -- 10/19/01 023 790 000 -767 -003 -- -- -- -- -- -- ND<5 0 -- 11/19/01 023 746 000 -7 23 044 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 2 3 12/13/01 023 7 17 000 -694 0 29 __ 3 7 01/18/02 023 6 73 000 -650 044 -- -- - ND<2 5 -- 02/11/02 023 721 000 -698 -048 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 6 ND<2 0 03/21/02 0 23 703 000 -6 80 0 18 -- -- -- ND<2 5 -- 05/02/02 023 7 18 000 -695 -0 15 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND< < 50 ND 20 08/01/02 023 750 000 -727 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 54 11/20/02 0 23 737 000 -7 14 0 13 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 - 4 5 02/20/03 023 721 000 -698 0 16 ND<50 ND<0 50 0 53 ND<0 50 ND<l 0 -- ND<2 0 05/07/03 023 648 000 -6 25 0 73 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 5886 Page 7 of 28