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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 MTBE Sampled Elevation Water Thickness water in 8260B Comments Comments Xylenes 8021 B 82608 Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µgll) (µg/1) (µg/1) (µg/1) (µg11) (µgll) MW-9S continued 11/19/01 -064 673 000 -737 057 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<Q 50 ND<5 0 ND<l 0 02/11/02 -064 662 000 -726 0 11 ND<50 -- ND<0 50 0 82 ND<0 50 063 ND<2 5 ND<2 0 05/02/02 -064 669 000 -733 -007 ND<50 ND<Q 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 08/01/02 -0 64 693 000 -757 -024 __ ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 11/20/02 -064 6 79 000 -743 0 14 __ -- ND<2 0 ND<50 ND<0 50 ND<Q 50 ND<0 50 ND<l 0 ND<2 0 02/20/03 -0 64 6 18 000 -682 061 ND<50 ND<0 50 ND<0 50 ND<0 50 1 8 05/07/03 -0 64 __ __ -- ND<2 0 -- -- Monitored/Sampled Semi- 08/04/03 -064 698 000 -762 _ ND<80 ND<5 0 ND<5 0 ND<5 0 ND<l pAnnually 02/11/04 -064 629 0 00 -6 93 069 __ -- ND<2 0 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 05/27/04 -064 ND<2 D _ __ - 08/30/04 -0 64 650 000 -714 __ -' -- Sampled Semi-Annually ND<50 -- ND<0 5 ND<Q 5 ND<0 5 ND<1 ND<D 11/23/04 -064 __ __ __ 5 - Monitored and Sampled Semi 02/23/05 -064 600 000 _6 64 __ ND<50Annually ND<0 50 ND<Q 50 ND<0 50 NDQ 0 ND<0 50 06/06/05 -064 626 000 -690 -026 __ MW-10D - - Sampled semi-annually (Screen Interval in feet 34 0-35 4} 04/14/99 -1 67 5 94 000 -761 __ ND __ 0 954 202 ND 0 995 06/01/99 -1 67 661 000113 g 28 -067 ND -- -- ND ND ND ND ND ND 08/16/99 -167 7 02 000 -869 -041 ND 11/29/99 -167 6 7b 0 00 -8 43 0 26 ND - ND ND ND ND 10 11 D 11/29/99 -167 676 000 -- ND ND ND ND 21 26 -$43 0 26 02/28/00 -167 496 000 -663 180 ND 65110!40 -167 b 01 000 -768 -105 ND - ND ND ND ND ND ND - ND ND ND ND ND ND 08/03/00 -167 6 96 000 -863 -0 95 ND -- ND ND ND ND ND ND Sass Page 27 of 31