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# i # 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 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (1g11) (µg11) (µg11) (µg11) (µg11) (µg11) (µg/1) MW-5S continued 11/16/00 025 672 0 00 -647 0 62 02/05/01 025 657 000 -632 0 15 05/07/01 025 640 0 00 -6 15 08/20/01 025 757 000 -732 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 11/19/01 0 25 708 000 -683 - ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<l 0 02/11/02 025 668 000 -643 ND<50 ND<0 50 097 ND<0 50 1 3 ND<2 5 ND<2 0 05/02/02 0 25 669 000 -644 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 08/01/02 025 709 000 -6 84 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 - ND<2 0 11/20/02 025 692 000 -667 0 17 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 02/20/03 025 669 000 -644 023 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 - ND<2 0 05/07/03 025 5 88 -- -5 63 081 -- -- __ __ __ __ Sampled Semi-Annually 08/04/03 025 722 000 -697 -134 - ND<50 ND<5 0 ND<5 0 ND<5 0 ND<l 0 -- ND<2 0 11/20/03 025 661 000 -636 061 - _ _ __ Monitored Only 02/11/04 025 630 000 -6 05 031 - ND<50 ND<0 50 ND<0 50 ND<0 50 1 2 -- ND<2 0 05/27/04 025 699 000 -6 74 -069 -- -- _ _ Monitored Only 08/30/04 025 680 000 -655 0 19 54 - ND<0 5 ND<0 5 ND<0 5 ND<1 -- ND<0 5 11/23/04 025 6 21 0 00 -596 059 -- - -_ __ _ Sampled Semi Annually MW-6D (Screen Interval in feet 22 0-25 0) 05/02/97 -033 699 000 -732 -- - -- -- - 480 -- 09/02/97 -0 33 8 91 000 -924 -192 -- __ __ __ __ 130 _ 12/01/97 -033 7 41 000 -774 1 50 -- -- -- -- - 64 -- 03/25/98 -033 5 80 000 -6 13 1 61 -- -- -- -- -- -- 1200 1400 06/17/98 -033 6 58 000 -691 -078 -- - -- 077 -- 072 350 330 09/01/98 -033 723 000 -756 -065 -- -- -- -- -- -- 20 29 5886 Page 12 of 28