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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 1990 Through February 2005 Former BP Oil 11192 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE TBA Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 802113 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (pg/1) (µg11) (µg/1) (µg11) (WO (µg11) (µg11) (µg11) (figll) MW-3 continued 08/08/02 568 15 06 000 -938 -1 32 -- ND<2500 ND<25 ND<25 ND<25 ND<25 - 62 240000 1 1115/02 S68 1664 000 -1096 -158 __ ND<tzoaa ND<120 ND<120 ND<120 ND<120 - ND<500 180000 01/03/03 5 68 15 36 000 -968 0 00 -- ND<10000 ND<100 ND<100 ND<100 ND<200 - ND<400 150000 D 01/03/03 569 i 5 36 000 -969 1 2$ -- -- __ __ __ __ __ _ _- 05/14/03 568 1454 000 -886 000 - ND<5000 ND<50 ND<50 ND<50 ND<50 -- ND<200 120000 D 05/14/03 568 1454 000 -886 0 82 - -- -- - __ __ __ -- 08/14103 568 1604 000 -1036 000 ND<10000 ND<100 ND<100 ND<100 ND<200 - ND<400 150000 D 08/14/03 568 1604 000 -1036 -150 -- - - -- -- _ _ _ -- 11/26/03 568 1696 000 -1128 -092 -- ND<10000 ND<100 ND<100 ND<100 ND<200 - ND<400 150000 02/23/04 5 68 1560 0 00 -992 1 36 __ ND<10000 ND<100 ND<100 ND<100 ND<200 -- ND<400 98000 05/21/04 5 68 15 13 0 00 -9 45 047 __ ND<10000 ND<100 ND<100 ND<100 ND<200 - ND<100 90000 081[0104 568 1634 000 -1066 -121 __ ND<10000 ND<100 ND<100 ND<100 ND<200 - ND<100 66000 11/24104 5 68 16 11 000 -1043 023 - ND<5000 ND<50 ND<50 ND<50 ND<100 -- ND<50 60000 02/25/05 5 68 15 00 000 -932 1 11 -- ND<5000 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<50 36000 MW-4 05/01/90 675 26 31 000 -1956 -- -- -- -- -- _ _ -- 08/05/91 675 -- -- - -- - - -- - - -- - - Dry 12/09/91 6 75 - -- -- - -- - - -- -- -- -- Dry 03/09/92 6 75 - __ __ __ __ _ Dry 06/19/92 6 75 -- -- -- -- Dry 09/18/92 6 75 - - - - - - - - - Dry 12/09/92 675 - -- - - -- -- - - Dry 03/11/93 675 -- -- -- -- -- -- - - -- - -- Dry 06/15/93 6 75 2801 000 -2126 - - - -- -- - -- -- 11192 Page 5 of 18