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Table 2 HISTORIC FLU[D LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through August 2005 Former BP Oil 11195 Date TOC Depth to LPI I Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 802IB 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (µg/1) (µg11) {10) (µg/1) (µg/1) MW-3 continued 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 11/29/04 14.37 11.58 0.00 2,79 -0.43 -- I00 ND<0.50 ND<0.50 ND<0.50 ND<1.0 84 02/15/05 14.37 10.39 0.00 3.98 1.19 -- 92 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 150 05/25/05 14,37 9.95 0.00 4.42 0.44 -- 110 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 160 08/31/05 14.37 10.23 0.00 4.14 -0.28 - 120 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 59 MW-4 (Screen Interval in feet:9.5-245) 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 ND ND 1000 1300 - D 09/15/93 9.03 9.64 0.00 -0.61 -1.39 16000 -- 18 ND 1000 1200 -- _ 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 0.68 160 ND 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 - ND ND 990 460 _ D 02/21/95 9.03 8.29 0.00 0,74 2.33 11000 -- ND ND 990 450 06/09/95 9.03 7.79 0.00 1.24 0.50 88 - ND ND ND ND -- D 06/09/95 9.03 7.79 0.00 1.24 0.50 810 ND 0.52 22 2.5 08/31/95 9.03 9.73 0.00 -0.70 -1.94 2500 -- ND ND 130 14 ND -- D 08/31/95 9.03 9.73 0.00 -0,70 -1.94 2800 -- ND ND 160 17 ND 11/02/95 9.03 10.30 0.00 -1,27 -0.57 1800 - ND ND 56 3.6 ND D 11/02/95 9.03 10.30 0.00 -1.27 -0.57 1300 ND ND 38 2.7 ND 02/28/96 9.03 6.87 0.00 2,16 3.43 2700 -- 2.6 1 220 75 ND - 11195 Page 8 of 26