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• s • 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 8260E benzene Xylenes 8021E 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) (µg/1) (µg11) (µg11) (µg/1) {µg11) {µg11) MW-3 continued 09/09/96 -0 14 8 10 000 -8 24 006 ND -- ND ND ND ND 4100 -- 12/06/96 -014 669 000 -683 141 ND -- ND ND ND ND 660 -- 03/07/97 -0 14 598 000 -612 071 ND -- ND ND ND ND 16000 20000 05/02/97 -065 660 000 -725 -1 13 ND -- 3 2 ND ND ND00 79 8000 09/02/97 -065 8 56 000 -921 -196 ND -- ND ND ND ND 2100 -- 12/01/97 -065 705 000 -770 151 ND -- ND ND ND ND 1700 -- 03/25/98 -065 526 000 -591 1 79 ND -- ND ND ND ND 8200 8500 06/17/98 -065 608 000 -673 -082 ND ND ND ND ND 6200 7300 09/01/98 -065 687 000 -7 52 -079 ND -- ND ND ND ND 6700 4500 D 09/01/98 -065 687 000 -752 000 -- -- -- -- __ -- 12/03/98 -065 6 33 000 -698 054 ND ND ND ND ND 4400 5000 03/01/99 -065 5 55 000 -620 078 ND -- ND ND ND ND 27000 31000 04/19/99 -014 607 000 -621 -- -- -- -_ _ -- -- 06/01/99 -014 673 000 -6 87 -066 ND -- ND ND ND ND 36000 36000 08/16/99 -0 14 693 000 -707 -020 ND - ND ND ND ND 20000 17000 D 08/16/99 -0 14 693 000 -707 000 - -- -- -- -- -- __ 11/29/99 -014 684 000 -698 009 ND - ND ND ND ND 16000 21000 D 11/29/99 -0 14 684 000 -698 000 02/28/00 -0 14 469 000 -483 2 15 ND -- ND ND ND ND 41000 42000 D 02/28/00 -0 14 469 000 -4 83 000 -- -- - -- -- -- -- 05/10/00 -0 14 606 000 -620 -137 ND ND ND ND ND 101000 122000 D 05/10/00 -0 14 606 000 -620 000 -- -- -- -- -- __ __ 08/03/00 -014 680 000 -694 -074 ND -- ND ND ND ND 28700 20900 D 08/03/00 -014 680 000 -694 000 -- -- -- -- -- -- -- 5886 Page 5 of 30