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i Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 1990 Through August 2004 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 8260E benzene Xylenes 8021E 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg/1) (1g11) (µg/1) (µg/t) (µg11) (µgll) (µg11) MW-5 continued 06/15/93 6 15 27 45 000 -2130 2 03 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- - 09/15/93 6 15 2797 000 -21 82 -052 - -- - - -- -- -- -- 12/22/93 6 15 2779 000 -21 64 0 18 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 - - - 04/01/94 6 15 2691 000 -2076 088 -- -- - - -- -- 07/27/94 6 15 2696 000 -2081 -0 05 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 - -- 11/30/94 6 15 2741 000 -21 26 -045 - - -- -- -- -- -- -- 02/15/95 6 15 2626 000 -20 11 1 15 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<1 0 - -- -- 04/21/95 6 15 24 23 000 -1808 2 03 -- -- - - -- - - - -- 07/19/95 6 15 2346 000 -17 31 077 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 - -- 10/20/95 6 15 23 94 000 -1779 -- - - - -- -- -- -- -- 04/23/96 6 15 2060 000 -1445 3 34 ND<500 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<10 --07/12/96 6 15 21 18 000 -15 03 -058 -- -- -- -- -- - 10/18/96 6 15 2035 000 -1420 0 83 ND<50 - ND<0 5 ND<1 0 ND<1 0 ND<1 0 ND<10 -- -- 02/26/98 6 15 1250 000 -6 35 7 85 ND<50 -- ND<0 5 ND<1 0 ND<1 0 ND 07/07/98 6 15 12 10 000 -5 95 040 ND<50 -- ND<0 5 ND<1 0 ND<1 0 ND<1 0 ND<10 - - 01/19/99 6 15 1422 000 -807 -2 12 -- -- - -- -- - -- -- 07/14/99 6 15 1408 000 -793 014 -- -- -- -- -- - 10/07/99 6 15 13 70 000 -755 -- - - -- -- -- 01/20/00 6 15 1442 000 -827 -072 -- - -- - - --04/11/00 6 15 1467 000 -852 -025 -- -- - -- -- -- -07/14/00 6 15 1282 000 -667 1 85 -- - - - - - -- - 10/26/00 6 15 1401 000 -786 -1 19 -- -- -- -- - -- - -- 01/16/01 6 15 13 86 000 -771 0 15 -- -- - - -- -- --04/12/01 6 15 13 14 000 -6 99 0 72 -- -- - -- - - -- -- - 11192 Page 8 of 18 I