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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through August 2004 Former BP Oil 11195 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (1g/1) (10) (µgll) (11g/1) (µg/1) MW-3 continued 11/24/03 14.37 10.72 0.00 3.65 0.27 2300 ND<10 ND<10 ND<10 ND<20 -- 2600 02/26/04 14.37 9.91 0.00 4.46 0.81 - ND<1000 ND<10 ND<10 ND<10 ND<20 -- 950 05/21/04 14.37 10.59 0.00 3.78 -0.68 -- ND<1000 ND<10 ND<10 ND<10 ND<20 -- 1000 08/26/04 14.37 11.15 0.00 3.22 -0.56 - ND<500 ND<5.0 ND<5.0 ND<5.0 ND<10 -- 400 MW-4 (Screen Interval in feet:9.5-24.5) 12/21/92 9.03 11.06 0.00 -2.03 -- 10000 -- -- 3.5 300 540 -- -- 05/17/93 9.03 8.25 0.00 0.78 2.81 6600 -- 7.7 3.3 840 1000 -- -- 09/15/93 9.03 9.64 0.00 -0.61 -1.39 16000 -- -- 1000 1300 -- -- 01/12/94 9.03 10.38 0.00 -1.35 -0.74 3200 - 6.2 1.4 150 112 -- -- 05/12/94 9.03 9.70 0.00 -0.67 -- 160 -- -- 2.5 0.7 ND -- -- 10/07/94 9.03 10.46 0,00 -1.43 -0.76 13000 -- 11 2.1 1100 33 -- - 12/08/94 9.03 10.62 0.00 -1.59 -0.16 5400 -- 20 27 490 54 -- - 02/21/95 9.03 8.29 0.00 0.74 2.33 11000 -- -- -- 990 460 -- -- 06/09/95 9.03 7.79 0.00 1.24 0.50 88 -- -- -- -- ND -- -- 08/31/95 9.03 9.73 0.00 -0.70 -1.94 2500 -- -- -- 130 14 -- -- 11/02/95 9.03 10.30 0.00 -1.27 -0.57 1800 -- -- -- 56 3.6 -- -- 02/28/96 9.03 6.87 0.00 2.16 3.43 2700 -- 2,6 1 220 75 -- -- 09/05/96 9.03 9.19 0.00 -0.16 -2.32 530 -- -- -- -- -- -- 03/25/97 9.03 6.40 0.00 2.63 2.79 590 -- -- -- 1.3 - -- 10/15/97 9.03 10.59 0.00 -1.56 -4.19 1600 -- 3.6 -- -- -- 60000 - 01/15/98 9.03 9.37 0.00 -0.34 1.22 19000 -- 7.3 -- -- -- 18000 - 05/07/98 9.03 6.30 0.00 2.73 3.07 1100 - -- - -- -- 1100 -- 09/03/98 9.03 8.58 0.00 0.45 -2.28 2400 - -- -- 2.8 -- 680 -- 09/15/98 14.32 8.75 0.00 5.57 5.12 590 - -- 3.4 -- -- -- 990 11195 Page 7 of 22