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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through March 2005 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 826013 benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (lig/1) (gg/1) (41) (µg11) (µg11) (µg/1) (µg11) (µg11) MW-9 continued 219/01 8.04 8.11 0.00 -0.07 0.27 ND -- ND ND ND ND ND ND 5111101 8.04 7.59 0.00 0.45 0.52 ND -- ND ND ND ND ND ND 8/10101 8.04 9.18 0.00 -1.14 -1.59 ND<50 -- ND<0.50 1.1 ND<0.50 0.91 ND<5.0 ND<2.0 11/21/01 8.04 9.64 0.00 -1.60 -0.46 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<5.0 ND<1.0 2/7/02 8.04 7.69 0.00 0.35 1.95 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<2.5 ND<2.0 5/23/02 8.04 8.66 0.00 -0.62 -0.97 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 =- ND<0.5 8115102 13.29 9.18 0.00 4.11 -- - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 11/18/02 13.29 9.55 0.00 3.74 -0.37 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 3.5 2113103 13.29 8.80 0.00 4.49 0.75 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 52 5/12103 13.29 8.95 0.00 4.34 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 63 8128103 13.29 9.94 0.00 3.35 -0.99 -- 150 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- Ho 11/24/03 13.29 9.75 0.00 3.54 0.19 -- ND�250 ND<2.5 ND<2.5 ND<2.5 ND<5.0 - 160 2126/04 13.29 9.01 0.00 4.28 0.74 -- 87 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 90 5/21104 13.29 9.60 0.00 3.69 -0.59 -- 66 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 93 8/26104 13.29 10.19 0.00 3.10 -0.59 - 130 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 110 11/29/04 13.29 10.53 0.00 2.76 -0.34 -- 460 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 480 2115105 13.29 9.36 0.00 3.93 1.17 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 420 MW-10 (Screen Interval in feet: 4A-14.0) 913198 8.12 7.76 0.00 0.36 -- 210 - ND ND ND 1.03 210 -- 12/23/98 8.12 8.22 0.00 -0.10 - ND - ND ND ND ND ND -- 12/31/98 8.12 8.25 0.00 -0.13 -0.03 470 - ND ND ND ND 490 -- 3/22/99 8.12 7.14 0.00 0.98 1.11 1800 - ND ND ND ND 1900 -- 5/20199 8.12 7.14 0.00 098 0.00 ND -- ND ND ND ND ND 3.52 8/11/99 8.12 8.41 0.00 -0.29 -1.27 ND -- ND ND ND ND 919 1100 11195 Page 16 of 24 ......z-.. ................. .._. ti.:.ia._,..:_ .ro_.- -..�..w..,,.��_,�.�..:,._.._�..�......�...�..�.�4 ��4.��__.�4...�_4.a�.�.....____....__t...a•. ..'.