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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS tMay 1990 Through November 2004 Former BP Oil 11192 I 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 8021B 82608 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (µg/1) 41g/1) (µg/1) (Ag/1) (110) (µg/1) MW-5 continued 07/14/00 6 15 1282 000 -6 67 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 1314 0 00 -699 072 07/23/01 6 15 1404 000 -789 -090 08/16/01 5 63 14 49 000 -886 -097 11/09/01 5 63 15 48 000 -985 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<1 0 ND<20 12/14/01 5 63 15 25 000 -962 023 01/10/02 563 13 89 000 -826 136 02/18/02 563 1338 000 -7 75 051 ND<50 -- ND<O 50 ND<0 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 ND<100 05/31/02 563 1361 000 -798 -0 23 ND<50 ND<O 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 ND<100 08/08/02 563 1494 000 -931 -133 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 - ND<2 0 ND<20 11/15/02 5 63 1612 000 -1049 -1 18 -- ND<50 ND<0 50 1 1 ND<O 50 065 -- 3 4 260 01/03/03 5 63 1523 000 -960 0 89 -- ND<50 ND<0 50 ND<O 50 ND<O 50 ND<l 0 ND<2 0 ND<100 05/14/03 563 1451 000 -8 88 072 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 7 6 ND<100 08/14/03 5 63 15 81 000 -10 18 -130 -- 61 ND<O 50 ND<O 50 ND<0 50 ND<1 0 -- 23 ND<100 11/26/03 5 63 1671 000 -1108 -090 -- ND<50 ND<O 50 ND<0 50 ND<0 50 ND<1 0 -- 6 9 ND<100 02/23/04 5 63 15 35 000 -9 72 136 - ND<50 ND<0 50 068 ND<0 50 1 7 -- 4 0 ND<100 05/21/04 5 63 1498 000 -935 037 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 050 ND<5 0 08/10/04 5 63 16 19 000 -1056 -121 -- ND<50 ND<0 50 ND<0 50 ND<O 50 ND<1 0 -- 19 ND<5 0 11/24/04 563 1674 000 -11 11 -055 - ND<50 ND<0 50 ND<O 50 ND<O 50 ND<1 0 -- ND<O 50 5 0 MW-6 08/05/91 5 80 2982 000 -2402 -- ND -- ND ND ND ND -- -- 08/15/91 5 80 -- -- -- 11192 Page 9 of 18 i