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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through November 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 8260E benzene Xylenes 8021B 8260E Elevation Elevation ' (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (Fig/') (µg/l) (µg/1) (µg/1) MW-19 continued 08/26/04 12.84 10.60 0.00 2.24 -0.68 - 310 ND<1.0 ND<1.0 ND<1.0 ND<2.0 -- 330 11/29/04 12.84 10.94 0.00 1.90 -0.34 -- 250 ND<1.0 ND<1.0 ND<1.0 ND<2.0 - 320 MW-20 (Screen Interval in feet: 5.0-20.0) 02/13/03 12.54 8.71 0.00 3.83 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 05/12/03 12.54 8.89 0.00 3.65 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1-0 -- ND<2.0 08/28/03 12.54 9.75 0.00 2.79 -0.86 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 11/24/03 12.54 9.56 0.00 2.98 0.19 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 02/26/04 12.54 9.02 0.00 3.52 0.54 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND-<2.0 05/21/04 12.54 9.79 0.00 2.75 -0.77 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 3.7 08/26/04 12.54 10.55 0.00 1.99 -0.76 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 1.7 11/29/04 12.54 10.89 0.00 1.65 -0.34 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 1.4 MW-21 (Screen Interval in feet: 5.0-20.0) 02/13/03 12.80 8.05 0.00 4.75 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 05/12/03 12.80 9.21 0.00 3.59 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<2.0 08/28/03 12.80 10.08 0.00 2.72 -0.87 -- 1100 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<2.0 11/24/03 12.80 9.93 0.00 2.87 0.15 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 02/26/04 12.80 9.29 0.00 3.51 0.64 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<2.0 05/21/04 12.80 10.19 0.00 2.61 -0.90 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 08/26/04 12.80 10.96 0.00 1.84 -0.77 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 11/29/04 12.80 -- -- __ __ __ _ Covered with asphalt 11195 Page 23 of 23