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Table 2 ` HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 1990 Through November 2004 Former BF Oil 11192 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE 'IBA Comments Sampled Elevation Water Thickness water in 8260E benzene Xylenes 8021B 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) {µg11) (µg/1) (µg/1) (µg/1) (Rg/1) (µg/1) (11g/1) (µg/1) D MW-5 continued D 09/18/92 6 15 3192 000 -25 77 000 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 - -- -- 12/09/92 6 15 32 14 000 -2599 -022 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- 03/11/93 6 15 2948 000 -2333 000 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- -- D 03/11/93 6 15 2948 000 -2333 2 66 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- -- 06/15/93 6 15 2745 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 -2164 0 18 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- -- 04/01/94 6 15 2691 000 -2076 0 88 07/27/94 6 15 2696 000 -2081 -005 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 -2011 1 15 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- - -- 04/21/95 6 15 2423 000 -18 08 2 03 07/19/95 6 15 2346 000 -1731 077 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 - -- -- 10/20/95 6 15 2394 000 -1779 -- 04/23/96 6 15 2060 000 -1445 334 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<l 0 ND<l 0 ND<l 0 ND<10 - -- 02/26/98 6 15 1250 000 -6 35 7 85 ND<50 - ND<0 5 ND<1 0 ND<l 0 ND<l 0 ND<10 -- - 07/07/98 6 15 1210 000 -595 040 ND<50 ND<0 5 ND<l 0 ND<l 0 ND<1 0 ND<10 -- - 01/19/99 6 15 1422 000 -807 -212 07/14/99 6 15 1408 000 -793 0 14 10107/99 6 15 1370 000 -7 55 01/20/00 6 15 1442 000 -827 -0 72 _- 04/11/00 6 15 1467 000 -852 -0 25 11192 Page 8 of 18