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Table 2 HISTORIC FLUID LE ��ELS AND SELECTED ANALYTICAL RESULTS May 1990 Through August 2005 Former BP Oil 11192 D,ite 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 8021B 826011 �126111 Elevation Elevation (feet) (feet) (feet) (feet) (feet) (41) (µ8/i) (41) (181l) (µg11) (µg/1) MW-4 continued 11 05/27/05 621 14 13 000 -792 1 15 -- ND 50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- 33 ND<5 0 08/26/05 621 1579 000 -958 -166 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 24 ND<10 MW-5 0$/05/91 6 15 3072 000 -2457 -- ND -- ND ND ND ND __ 03(15191 615 -. -- __ -- 12/09/91 6 15 31 10 000 -2495 ND - ND ND ND ND 03/09/92 6 15 3047 000 -2432 063 ND -- 62 ND 05 ND 06/19/92 6 15 2999 000 -2384 048 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 09/18/92 6 15 3192 000 -2577 -193 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 D 09/18/92 6 15 3192 000 -2577 -193 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 1.2/09192 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 266 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 D 03/11/93 6 15 2948 000 -2333 266 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- _ 06/15/93 6 15 2745 000 -2130 203 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- 09115l93 6 15 2797 000 -2182 -052 12/22/93 6 15 2779 000 -2164 018 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 -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 01/15/95 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 2423 000 -1808 203 07/19/95 6 15 2346 000 47 31 077 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- -- .. I0/20/95 6 15 2394 000 -1779 -048 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 - 111920 PaI* i