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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS t May 1990 Through November 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 to 826013 benzene Xylenes 8021E 8260B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (Ag/1) (µg11) (µg11) (µg/1) (µg11) (µg11) 410) MW-1 05/01/90 552 2511 000 -1959 -- 140 -- 1 ND ND -- ND -- - 08/05/91 552 -- -- -- -- - - - -- -- -- -- Dry 12/09/91 552 - -- -- -- -- -- -- -- -- -- -- Dry 03/09/92 552 -- -- - __ __ __ __ _ _- Dry 06/19/92 5 52 -- -- -- Dry 09/18/92 552 -- -- -- -- -- -- -- -- - -- -- -- -- Dry 12/09/92 5 52 -- -- _- __ __ __ __ Dry 02/15/95 552 04/21/95 5 52 23 82 000 -1830 -- 820 - 27 2 6 3 1 5 6 -- -- D 04/21/95 552 23 82 000 -1830 0 00 720 -- 31 2 9 35 57 -- _ 07/19/95 552 2292 000 -1740 090 620 40 2 2 4 2 3 -- -- -- P 10/20/95 552 -- -- - 440 -- 16 051 0 73 2 2 6 4 -- - Pre-purge D 10/20/95 552 -- -• -- -- 480 -- 17 ND<0 50 ND<0 50 15 ND<5 0 -- Pre-purge 10/20/95 5 52 2332 000 -1780 000 450 30 067 0 6 1 5 3 -- - D 10/20/95 552 23 32 000 -1780 -- 460 29 091 052 15 ND<5 0 -- -- P 04/23/96 552 -- - __ __ ND<500 -- 11 ND<0 5 ND<0 5 ND<0 5 49 - -- Pre-purge 04/23/96 552 1987 000 -1435 000 ND<500 -- 10 ND<0 5 ND<0 5 ND<0 5 42 -- -- 07/12/96 552 2099 000 -1547 -1 12 10/18/96 552 20 16 000 -1464 0 83 160 - ND<0 5 ND<1 0 ND<1 0 ND<1 0 ND<10 02/26/98 5 52 1190 000 -638 826 470 -- 16 ND<1 0 ND<1 0 ND<1 0 370 -- - 07/07/98 552 1140 000 -5 88 050 800 -- ND<0 5 ND<1 0 ND<1 0 ND<1 0 700 -- 01/19/99 552 1347 000 -795 -207 730 ND<1 0 ND<1 0 ND<l 0 ND<1 0 840 -- 07/14/99 5 52 1227 000 -675 l 20 3000 -- ND<1 0 ND<1 0 ND<1 0 ND<1 0 3300 -- -- 10/07/99 5 52 1390 000 -838 - 4000 -- ND<1 0 ND<1 0 ND 11192 Page 1 o€18 - 1�