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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through June 2005 Former BP Oil 11195 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTB$ MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021E 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) {µg/1) (µg/1) (µg11) (µg11) (µg11) (µg/1) (µg11) (µg11) MW-1 continued 05/11/01 9.76 9.38 0.00 0.38 0.61 ND -- ND 0.552 ND 0.691 124 140 08/10/01 9.76 10.38 0.00 -0.62 -1,00 ND<50 -- ND<0.50 1.6 ND<0.50 1.5 1200 2000 11/21/01 9.76 10.89 0.00 -1.13 -0.51 ND<120 -- ND<1.2 ND<1,2 ND<1.2 ND<1.2 1600 2000 02/07/02 9.76 8.90 0.00 0.86 1.99 ND<500 -- ND<5.0 ND<5.0 ND<5.0 ND<5.0 2400 1800 05/23/02 9.76 9.86 0,00 -0.10 -0.96 -- ND<1000 ND<I0 ND<10 ND<10 NDQO -- 1900 08/15/02 14.42 10.33 0.00 4,09 4.19 -- ND<1000 ND<10 ND<10 ND<l0 ND<20 -- 1100 11/18/02 14.42 10.72 0.00 3.70 -0.39 - ND<1000 ND<10 ND<10 ND<10 ND<20 -- 2000 02/13/03 14.42 9.83 0.00 4.59 0.89 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 120 05/12/03 14.42 10.17 0.00 4.25 -0,34 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<2.0 08/28/03 14.42 11.1I 0.00 3.31 .0.94 -- 550 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 2.2 11/24/03 14.42 10,85 0.00 3.57 0.26 -- 630 ND<5.0 ND<5.0 ND<5.0 ND<10 - 760 02/26/04 14.42 9.95 0,00 4.47 0.90 -- 110 ND<1.0 ND<1.0 ND<1.0 ND<2.0 - 100 05/21/04 14.42 10.75 0,00 3.67 -0.80 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 6.4 08/26/04 14.42 11.29 0.00 3.13 -0.54 -- 130 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 11/29/04 14.42 11.71 0.00 2,71 -0.42 -- 76 ND<0.50 ND<0.50 ND<0.50 ND<1.0 2.8 02/15/05 14.42 10.50 0.00 3.92 1.21 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<I.0 -- 3.8 05/25/05 14.42 10.08 0.00 4,34 0.42 -- 150 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- ND<0.50 MW-2 (Screen Interval in feet:8.0-23,0) 12/21/92 8.90 10.96 0.00 -2.06 -- ND -- ND ND ND ND -- -- 05/17/93 8.90 8.20 0.00 0.70 2,76 120 -- 1.8 0.6 1.2 I -- -- 09/15/93 8.90 9.58 0.00 -0.68 -1.38 2800 97 ND 290 250 -- -- 01/12/94 8,90 10.28 0.00 -1.38 -0.70 51 -- ND ND ND ND 130 -- 05/12/94 8.90 9.57 0.00 -0.67 0.71 64 ND ND ND ND 120 - 10/07/94 8.90 10,36 0.00 -1.46 -0.79 86 -- ND ND ND ND -- 11195 Page 3 of 25 �.crvr-x._z__•..:_---._.::.::..:..:....:..•-•----=--'---`- =--"-----•----�--^''^"1'�":-�'T^-T:,.n_,rz.�-�rr��.:zcc�cc�.:._'-`�',�'"`---.__-___."'�'•-,."-�s .�•-�--=-•- z^-.''""'=-----•------___•`__`__•__�"�-� -��-