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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 8260E benzene Xylenes 8021B 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µgll) (µg11) (41) (41) (µg/1) (µg/1) (41) MW-16 continued 06/18/02 12.92 11.94 0.00 0.98 -- -- ND<1000 ND<10 ND<10 ND<10 ND<20 -- 2300 08/15/02 12.92 I2.07 0.00 0.85 -0.13 -- ND<2500 ND<25 ND<25 ND<25 ND<50 - 2400 11/18/02 12.92 12.43 0.00 0.49 -0.36 -- ND<2500 ND-<25 ND<25 ND<25 ND<50 -- 2700 02/13/03 12.92 11.63 0.00 1.29 0.80 -- ND<1000 ND<10 ND<10 ND<10 ND<20 - 1700 05/12/03 12.92 11.83 0.00 1.09 -- ND<5000 ND<50 ND<50 ND<50 ND<100 -- 1900 08/28/03 12.92 12.74 0.00 0.18 -0.91 -- 810 ND<5.0 ND<5.0 ND<5.0 ND<10 - 1000 11/24/03 12.92 12.45 0.00 0.47 0.29 -- 340 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 270 02/26/04 12.92 11.72 0.00 1.20 0.73 -- ND<250 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 290 05/21/04 12.92 12.60 0.00 0.32 -0.88 ND<250 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 140 08/26/04 12.92 13.26 0.00 -0.34 -0.66 - 260 ND<1.0 ND<1.0 ND<1.0 ND<2.0 -- 240 MW-17 (Screen Interval in feet: 5.0-20.0) 06/18/02 13.76 9.69 0.00 4.07 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 28 08/15/02 13.76 9.88 0,00 3.88 -0.19 280 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 270 11/18/02 13.76 10.21 0.00 3.55 -0.33 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 71 02/13/03 13.76 9.45 0.00 4.31 0.76 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 28 05/12/03 13.76 9.63 0.00 4.13 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 140 08/28/03 13.76 10.58 0.00 3.18 -0.95 -- ND<50 ND<2.5 N11><2.5 ND<2.5 ND<5.0 -- 730 11/24/03 13.76 10.37 0.00 3.39 0.21 -- 200 ND<1.0 ND<1.0 ND<1.0 ND<2.0 -- 150 02/26/04 13.76 9.69 0.00 4.07 0.68 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<L0 -- 4.3 05/21/04 13.76 10.36 0.00 3.40 -0.67 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<L0 -- 29 08/26/04 13.76 11.00 0.00 2.76 -0.64 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 31 MW-18 (Screen Interval in feet: 5.0-20.0) 02/13/03 12.29 8.48 0.00 3.81 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 05/12/03 12.29 8.57 0.00 3.72 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - ND<2.0 Top of Casing Altered 11195 Page 20 of 22