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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 1990 Through August 2004 Former BP Oil 11192 Date fOC 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 8021B 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/I) (µg/l) (µg11) (µg11) (µg/l) (µg11) (µg11) {µg/1) MW-3 continued 01/03/03 568 15 36 000 -968 1 28 -- ND<10 000 ND<100 ND<100 ND<100 ND<200 -- ND<400 150,000 D 01/03/03 568 1536 000 -968 000 -- -- -- __ __ _ __ __ __ i 05/14/03 568 1454 000 -886 000 __ ND<5 000 ND<50 ND<50 ND<50 ND<50 - ND<200 120,000 D 05/14/03 5 68 1454 000 -8 86 092 -- -- __ _ __ -- 08114/03 568 1604 000 -1036 000 -- ND<'OOm ND<100 ND<100 ND<100 ND<200 ND<400 150000 D 08/14/03 5 68 1604 000 -1036 -1 50 -- __ __ __ _ __ -- 11/26/03 568 1696 000 -11 28 -092 -- ND<t0000 ND<100 ND<100 ND<100 ND<200 -- ND<400 150000 02/23/04 568 1560 000 -992 1 36 ND<to0oo ND<100 ND<100 ND<100 ND<200 -- ND<400 98000 05/21/04 568 15 13 000 -945 047 -- ND<too00 ND<100 ND<100 ND<100 ND<200 -- ND<100 90000 08/10/04 568 1634 000 -1066 -121 -- ND<t0000 ND<100 ND<100 ND<100 ND<200 - ND<100 66000 NIW-4 05/01/90 67S 2631 000 -1956 -- 08/05/91 675 -- -- -- -- -- -- -- -- -- -- - -- - Dry 12/09/91 675 - -- - -- - - - - - - -- - Dry 03/09/92 675 Dry 06/19/92 675 -- _ __ _ __ Dry 09/18/92 675 - - - - - - - - Dry 12/09/92 675 - - - - - - -- - - - Dry 03/11/93 675 -- -- -- - - - - - - - - Dry 06/15/93 675 2801 000 -21 26 -- 09/15/93 675 2850 000 -21 75 -049 12/22/93 675 2833 000 -21 58 0 17 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- - 04/01/94 675 2745 000 -2070 088 -- 07/27/94 675 2746 000 -2071 -001 190 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- - 11192 Page 5 of 18