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Table 2 v 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 MTBE Sampled Elevation Water Thickness water in 8260BComments benzene Xylenes $021$ 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µgll) (Pg/l) (µg/1) (Ag/1) (µg/l) (µg/l) (µg/1) W/O MW-41) continued 05/27/04 0 23 69S 000 -6 72 -009 -- ND<50 ND<O 50 2 3 ND<O 50 2 5 08/30/04 0232 21 000 -698 -026 ND<50 -- 2 1 ND<O 5 ND<O 5 ND<O 5 ND<1 4 3 11/23/04 023 6 73 000 -650 048 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<l 0 02/23/05 023 '" 1 4 6 27 0 00 -6 04 046 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 06106/05 023 6 85 0 00 -662 -- ND<0 50 -058 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<O 50 MW-4S (Screen Interval in feet 5 0-15 0) 05/02/97 -025 7 14 000 -739 -- ND __ ND ND ND ND ND 09/02/97 -025 934 000 -959 -220 ND ND ND ND ND ND -_ 12/01/97 -025 77S 000 -800 1 59 ND -- ND ND ND ND ND 03/25/98 -025 590 000 -6 15 185 ND _ - ND ND ND ND 79 72 06/17/98 -025 6 85 0 00 -710 -095 ND - ND 079 ND 067 12 12 09/01/98 -025 764 000 -789 -0 79 ND -- ND ND ND ND ND 12/03/98 -025 706 000 -731 058 ND 8 03/01/99 -025 6 04 000 -629 1 02 ND _ ND ND ND ND 4 1 5 4 - ND ND ND ND 39 31 04/19/99 045 677 000 -632 -003 _ 06/01/99 045 742 000 -697 -065 ND __ __ -- ND ND ND ND 4 53 08/16/99 045 775 000 -730 -033 ND -- ND ND ND ND 43 48 11/29/99 045 760 000 -7 15 0 15 ND -- ND 2 5 ND 2 12 13 02/28/00 045 5 01 0 00 -456 259 ND -- ND ND ND ND 37 45 05/10/00 0 45 6 73 000 -628 -172 ND 08/03/60 045 757 000 -7 [2 -084 ND ND ND ND ND 5 17 5 72 -- ND ND ND ND ND 32 11/16/00 045 698 000 -653 059 ND __ ND ND ND ND 54 35 02/05/01 045 684 000 -639 0 14 ND ND ND ND ND 04/30/01 045 670 000 -625 0 14 3 7 -- -- -- -- -- 2 89 5886 Page 9 of 31