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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 LPN Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE M rBE TBA Comments Sampled Elevation Water Thickness water in 82605 benzene Xylenes 8021B 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg11) (µg/t) (µg11) (µg/1) (ugll) (µg11) (µg11) (µg11) MW-6 continued 04/11/00 580 15 25 000 -945 -092 77 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 180 - -- 07/14/00 5 80 1197 000 -6 17 3 28 55 -- ND<0 5 ND<O 5 ND<O 5 ND<0 5 150 - -- 10/26/00 5 80 1360 000 -7 80 -1 63 1300 - 100 79 11 72 2200 -- 01/16/01 5 80 13 39 000 -759 021 1200 -- 2 06 ND<O 5 ND<O 5 ND<O 5 1700 -- -- 04/12/01 5 80 1193 000 -6 13 1 46 120 - ND<O 5 ND<O 5 ND<O 5 ND<l 5 157 07/23/01 5 80 13 56 000 -776 -1 63 200 - ND<O 5 ND<O 5 ND<O 5 ND<l 5 254 -- - 08/16/01 5 28 1400 000 -8 72 -096 -- - -- -- -- -- -- -- 11/09/01 5 28 1503 000 -975 -- ND<50 - ND<O 50 ND<O 50 ND<O 50 ND<O 50 1800 1800 ND<250 12/14/01 5 28 1475 000 -947 028 2100 -- ND<O 5 ND<O 5 ND<O 5 ND<1 0 2140 -- 01/10/02 5 28 1292 000 -764 1 83 1600 -- ND<5 0 ND<5 0 ND<5 0 ND<10 1580 02/18/02 529 12 88 000 -760 004 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 5 28 13 11 000 -783 -023 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 190 ND<100 08/08/02 5 28 1444 000 -9 16 -133 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 - ND<2 0 ND<20 1!115102 5 28 15 67 000 -1039 000 -- 96 ND<O 50 16 ND<O 50 1 -- 95 ND<100 D 11/15/02 5 28 15 67 000 -1039 -123 - -- -- -- -- __ -- 01/03/03 5 28 1475 000 -947 000 ND<50 ND<O 50 ND<O 50 0 65 2 1 ND<2 0 ND<100 D 01/03/03 5 28 1475 000 -947 092 - - -- -- -- - -- 05/14/03 5 28 1394 000 -8 66 0 00 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 - ND<2 0 ND<100 D 05/14/03 5 28 13 94 000 -8 66 081 -- -- -- - -- -- 08/14/03 5 28 15 43 000 -1015 000 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 ND<100 D 08/14/03 528 1543 000 -10 15 -149 -- -- -- -- -- -- -- 11/26/03 5 28 1629 000 -1101 -086 -- 50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 - 73 ND<100 02/23/04 528 1481 000 -953 1 48 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 3 1 ND<100 05/21/04 5 28 1445 000 -9 17 0 36 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 0 79 ND<5 0 11192 Page I 1 of l8