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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 in 8260B benzene Xylenes 8021B 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µgJl) (µg(1) (µg11) (µg(1) (µg11) (µg(1) (µg(1) (µg11) MW-11 08/16/01 5 18 1650 000 -1l 32 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 170 110 ND<20 10/04/01 5 18 1825 000 -1307 -175 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 280 200 ND<20 11/09/01 5 18 1824 000 -13 06 001 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 170 140 160 02/18/02 5 18 1592 000 -1074 232 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 290 310 ND<200 05/31/02 5 18 1661 000 -1143 -069 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 170 ND<100 08/08/02 5 18 1863 000 -1345 -202 -- ND<2500 ND<25 ND<25 ND<25 ND<25 -- 91 ND<20 11/15/02 5 18 1893 000 -13 75 -030 -- 76 ND<0 50 053 ND<0 50 ND<0 50 -- 72 ND<100 01/03/03 5 18 1881 000 -13 63 0 12 -- ND<50 ND<0 50 052 ND<0 50 ND<1 0 -- 130 150 05/14/03 5 18 1706 000 -1188 175 -- 120 ND<0 50 ND<0 50 ND<0 50 ND<0 50 -- 110 250 08/14/03 5 18 1983 000 -1465 -277 ND<250 ND<2 5 ND<2 5 ND<2 5 7 7 -- 67 2200 11/26/03 5 18 1951 000 -1433 032 -- 160 ND<1 0 ND<1 0 ND<1 0 2 4 -- 140 960 02/23/04 5 18 1771 000 -1253 180 -- 260 ND<2 5 35 ND<2 5 6 7 -- 48 3400 05/21/04 5 18 l8 76 000 -13 58 -105 -- ND<250 ND<2 5 ND<2 5 ND<2 5 ND<5 0 -- 45 1200 08/10/04 5 18 2068 000 -1550 -192 -- ND<1300 ND<13 ND<13 ND<13 ND<25 -- ND<13 12000 11/24/04 5 18 1987 000 -1469 081 -- ND<1300 ND<13 ND<13 ND<13 ND<25 -- ND<13 12000 02/25/05 5 18 1771 000 -1253 2 16 -- ND<1300 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<13 8800 05/27/05 5 18 1673 0 00 -1155 098 -- ND<1300 ND<13 ND<13 ND<13 ND<25 21 10000 08/26/05 5 18 1925 000 -1407 -252 -- 3707 ND<5 0 ND<5 0 ND<5 0 ND<10 -- 29 16000 MW-12 01/03/03 642 1508 000 -866 -- -- ND<250 ND<2 5 ND<2 5 ND<2 5 ND<5 0 -- 220 1700 05/14/03 642 1521 000 -879 -0 13 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 -- ND<2 0 2200 08/14/03 642 1667 000 -1025 -146 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 ND<2 0 180 11126103 642 17 57 0 00 -11 15 -090 -- ND<50 ND<0 50 055 ND<0 50 ND<l 0 -- ND<2 0 ND<100 ' 02/23/04 642 1614 000 -9 72 143 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<2 0 ND<100 11192 Page 18 of 20 I