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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 8260B benzene Xylenes 8021E 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) 6'g/l) (µg11) (µg/1) (µg/l) (pg/1) (µg11) D MW-91 continued D 02/28/00 -085 5 48 000 -633 157 05/10/00 -085 635 0 00 -720 -087 ND -- ND ND ND ND ND ND 08/03/00 -0 85 697 000 -782 -062 ND -- ND ND ND ND ND ND 11/16100 -0 85 652 000 -737 045 ND ND ND ND 064 ND ND 02/05/01 -085 653 000 -738 -001 ND -- ND ND ND ND ND ND 05/07/01 -085 627 000 -7 12 _ ND -- ND ND ND ND ND ND 08/20/01 -085 711 000 -796 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 11/19/01 -085 653 000 -738 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<1 0 02/11/02 -085 643 000 -728 ND<50 - ND<O 50 099 ND<O 50 077 ND<2 5 ND<2 0 05/02/02 -085 650 000 -735 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 08/01/02 -085 674 000 -759 -024 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<2 0 11/20/02 -0 85 660 000 -745 0 14 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 - ND<2 0 02/20/03 -0 85 6 53 0 00 -738 007 - ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 - ND<2 0 05/07/03 -0 85 -- -- __ __ __ _ Monitored/Sampled Semi- Annually 08/04/03 -085 679 000 -7 64 -- -- ND<80 ND<5 0 ND<5 0 ND<5 0 ND<1 0 ND<2 0 02/11/04 -0 85 6 14 000 -699 -- -- ND<50 052 ND<O 50 0 83 25 -- ND<2 0 05/27/04 -085 - -- -- __ _ __ __ _ _ Sampled Semi-Annually 08/30/04 -085 630 000 -7 15 __ ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<l -- ND<O 5 11/23/04 -085 -- __ __ __ _ __ _ Monitored and Sampled Semi Annually 02/23/05 -0 85 5 80 000 -665 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND MW-9S (Screen Interval in feet 5 0-15 0) 04/14199 -064 653 000 -717 -- ND -- ND ND ND ND ND 06/01/99 -064 694 000 -758 -- ND -- ND ND ND ND ND ND 5886 Page 25 of 30