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Table 2 I HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS February 1990 Through September 2004 Fortner 76 Station 6981 I Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTEE MTBE Comments Sampled Elevation Water Thickness water in 8260E benzene Xylenes 8021$ 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg11) (µg/1) (µg11) (µg/1) (µg/1) (µg/1) (µg/l) MW-1 (Screen Interval in feet 510-55-0) 10/18/90 -- -- _ _ _ _ - - _ -- _ _ Dry 11119/90 -- -- - - _ _ _ _ - -- -- - - Dry 12/27/90 -- -- - _ - __ _ - - _ - _ Dry 01(28/91 -- -- - - - -- - - - -- _ -- - Dry 04/02/91 -- -- - -- -- __ - - - - - -- - Dry 07/18/91 -- -- - -- -- _. _ _ _ _ _ -- Dry 09/30/91 -- - _ _ - -- _ _ _ - - -- Dry 11/14/91 -- -- - - _ - _ _ _ - - __ _. Dry 04/16/92 -- -- -- _ - __ _ _ - - -- -- Dry 07130/92 -- -- - -- - -- - - - - - -- -- Dry 10/21/92 -- -- -- _ _ - _ _ _ _ -- -- -- Dry 01/13/93 -- -- -- - - -- - - - - - -- -- Dry 04/26/993 1041 4912 0 00 -3871 -- 1400 - 16 ND<5 0 ND<5 0 ND<5 0 -- -- I 07/26/93 1041 5013 000 -3972 -101 550 -- 12 95 ND<l 0 75 -- -- 10/20/93 1041 5065 000 -4024 -052 440 - 0 5 0 99 ND<O 5 21 -- -- 01/17/94 1041 4818 000 -3777 247 990 -- 15 10 39 150 -- 04/25/94 1041 4610 000 -35 69 -- 180 -- 2 l 17 ND<0.5 15 -- -- 07/25/94 1041 48 45 000 .3804 -235 ND<50 -- ND<0 5 NIXO 5 ND<O 5 ND<O 5 - - 14/26/94 1041 4966 000 -3925 -121 68 -- 4 ND<O 5 ND<O 5 ND<O 5 --01/25195 1041 4728 000 -3687 238 ND<50 - ND<0 5 ND<O 5 ND<O 5 ND<O 5 04/26/95 1041 4232 000 -3191 496 ND<50 - N1XO 5 0 64 ND<O 5 075 -- - 07/26/95 1041 43.35 000 -3294 -103 ND<50 -- ND<O 5 0 64 ND<O 5 084 -- - I M5195 1041 4423 000 -33 82 -088 - -- - -- - -- - 01/24/96 1041 4141 000 -3100 282 ND<250 -- ND<2 5 ND<2 5 ND<2 5 ND<2 5 -- - agar Page 1 of 35 I I