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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 1990 Through August 2005 Former BP Od 11192 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE TBA Comments Sampled Elevation Water Thickness water to 8260B benzene Xylenes 8021B 8260E 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (41) (µg11) (µg11) (µg11) (µg11) (11g11) (µg/1) WA) MW-9 continued 05/21/04 426 U 96 000 -9 70 045 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<t 0 -- ND<0 50 ND<5 0 08/10/04 426 15 12 000 -1086 -1 16 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<5 0 11/24/04 4 26 1570 000 -1144 -058 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 ND<5 0 02/25/05 426 1382 000 -956 188 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 ND<5 0 05/27/05 426 1249 000 -823 133 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<5 0 08/26/05 426 1410 000 -984 -1 6l -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<10 MW-10 08/16/01 406 13 07 000 -901 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<2 5 ND<2 0 ND<20 11/09/01 4 06 1401 000 -9 95 -094 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<l 0 ND<20 02/18/02 406 1186 000 -780 2 15 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 ND<5 0 ND<2 0 ND<l 00 05/31/02 406 1215 000 -809 -029 -- -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 ND<100 08/08/02 406 1349 000 -943 -1 34 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 -- ND<2 0 ND<20 11/15/02 406 1470 000 40 64 -121 -- ND<50 ND<0 50 14 ND<0 50 052 -- ND<2 0 ND<100 01/03/03 4 06 1379 000 -973 091 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 ND<100 05/14/03 406 12 85 000 -879 094 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 -- ND<2 0 ND<100 08/14/03 406 1443 000 -1037 -158 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 ND<100 11/26/03 406 1529 000 -112.3 -086 -- 56 ND<0 50 081 ND<0 50 1 1 -- ND<2 0 ND<100 02/23/04 406 1381 000 -975 148 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<2 0 ND<100 05/21/04 4 06 1348 000 -942 033 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 ND<5 0 08/10/04 406 1468 000 -1062 -120 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<5 0 11/24/04 4 06 1524 000 -1118 -056 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 ND<5 0 02/25/05 406 13 15 0 00 -909 209 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<5 0 05127(05 406 1201 000 -795 114 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<5 0 08/26/05 406 1377 000 -971 -176 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 ND<10 11192 Page 17 of 20