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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 MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg/1) (11g11) (µg/1) (µg11) (µg11) (µg11) MW-6 continued 05/21/04 12.90 9.20 0.00 3.70 -0.61 -- 53 ND<0.50 ND<0.50 ND<0.50 ND<1,0 -- 34 08/26/04 12.90 9.71 0.00 3.19 -0.51 -- 67 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 69 11/29/04 12.90 10.14 0.00 2.76 -0.43 -- 140 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 180 02/15/05 12.90 8.96 0.00 3.94 1.18 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 140 05/25/05 12.90 8.53 0.00 4.37 0.43 -- ND<50 ND<0.50 ND<0,50 ND<0.50 ND<1.0 - 120 MW-7 (Screen Interval in feet:DNA) 09/15/93 14.27 9.59 0.00 4.68 -- ND -- ND ND ND ND -- -- 01/13/94 14.27 -- -- -- - -- -- -- -- -- ,Inaccessible-paved over 05/12/94 14.27 -- -- -- -- -- -- - -- -- - Inaccessible Paved Over 10/07/94 14.27 -- -- -- -- -- -- -- -- -- Inaccessible Paved Over 12/08/94 14.27 -- -- -- -- -- -- - Inaccessible Paved Over 02/21/95 14.27 8.21 0.00 6.06 -- ND ND ND ND ND -- - 06/09/95 14.27 -- -- -- -- -- -- -- Destroyed MW-8 (Screen Interval in feet:4.0-14.0) 09/03/98 8,91 8.41 0.00 0.50 -- ND -- ND ND ND 2 19 - 12/23/98 8.91 8.95 0.00 -0.04 -0.54 ND ND ND ND ND 15 -- 12/31/98 8.91 8.99 0.00 -0.08 -0.04 ND -- ND ND ND ND 13 -- 03/22/99 8.91 7.52 0.00 1.39 1.47 ND -- ND ND ND ND 22 -- 05/20/99 8.91 7.71 0.00 1.20 -0.19 ND - ND ND ND ND 22.4 30 08/11/99 8.91 9.10 0.00 -0.19 -1.39 ND -- ND ND ND ND 21.9 27 11/19/99 8.91 9.46 0.00 -0.55 -0.36 ND ND 1.3 ND 1.5 24 31 02/22/00 8.91 7.12 0.00 1.79 2.34 ND -- ND ND ND ND 11.3 7.54 05/05/00 8.91 7.36 0.00 1.55 -0.24 ND -- ND ND ND ND ND ND 08/28/00 8.91 8.88 0.00 0.03 -1.52 ND -- ND ND ND ND 217 255 11195 Page 14 of 25 _:.L:.....................�.'S".. ,T�`.l"il'T:�:�G:«:�.:Li�..._..._....__t...t.�_.��..•u�,...��.w ..«... �. _. :.�_�.:��:c 2:��._«.._:��C�::._:.�_ ...._..._..__._.X I XM S 8� ...