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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 1990 Through August 2004 Former BP Oil 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 826013 benzene Xylenes 8021B 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (lig/1) (µg11) (lig/1) (pg/1) (Ag/1) (µ8/1) (µg/l) 61g/l) (pg/1) MW-10 continued 02/18/02 406 11 86 000 -780 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 ND<100 05/31/02 406 12 15 000 -909 -029 __ __ ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 ND<100 08/08/02 4 06 1349 000 -943 -134 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 -- ND<2 0 ND<20 11/15/02 4 06 1470 000 -1064 -121 ND<50 ND<O 50 14 ND<O 50 0 52 - ND<2 0 ND<100 01/03/03 406 1379 000 -973 091 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 - ND<2 0 ND<100 05/14/03 406 12 85 000 -879 094 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 - ND<2 0 ND<100 I 08/14/03 406 1443 000 -1037 -1 58 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 - ND<2 0 ND<100 11/26/03 406 15 29 000 -1123 -086 -- 56 ND<0 50 081 ND<O 50 1 1 -- ND<2 0 ND<100 02/23/04 406 13 81 000 -975 148 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 - ND<2 0 ND<100 05/21/04 406 13 48 000 -942 033 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<O 50 ND<5 0 08/10/04 406 1468 000 -1062 -120 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<O 50 ND<5 0 MW-1 1 08/16/01 518 1650 000 -1 1 32 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 170 110 ND<20 10/04/01 5 18 18 25 000 -1307 -175 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 280 200 ND<20 11/09/01 5 18 18 24 000 -13 06 001 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 170 140 160 02/18/02 5 18 1592 000 -1074 -- ND<50 - ND<O 50 ND<O 50 ND<O 50 ND<O 50 290 310 ND<200 05/31/02 5 18 1661 000 -1143 -069 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 170 ND<100 08/08/02 5 18 1863 000 -13 45 -202 -- ND<2 500 ND<25 ND<25 ND<25 ND<25 91 ND<20 11/15/02 5 18 1893 000 -13 75 -030 76 ND<O 50 053 ND<O 50 ND<O 50 72 ND<100 01/03/03 5 18 18 81 000 -13 63 0 12 - ND<50 ND<O 50 052 ND<O 50 ND<1 0 -- 130 150 05/14/03 5 18 1706 000 -11 88 1 75 -- 120 ND<O 50 ND<O 50 ND<O 50 ND<O 50 - ]to 250 08/14/03 5 18 19 83 000 -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 24 -- 140 960 i 02/23/04 5 18 1771 000 -1253 1 80 - 260 ND<2 5 3 5 ND<2 5 6 7 - 48 3400 11192 Page 16 of 18