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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) (µg/l) (µgli) (fig/l) (µg11) (µg11) (Ag/1) 41g1]) (µg11) MW-6 continued 05/07/98 8.26 5.58 0.00 2.68 3.13 1500 -- ND ND ND ND 2300 -- 09/03/98 8.26 7.77 0.00 0.49 -2.19 ND -- ND ND ND ND 17 -- 12/23/98 8.26 8.32 0.00 -0.06 -0.55 ND -- ND ND ND ND 20 -- 12/31/98 8.26 7.93 0.00 0.33 0.39 90 ND ND ND ND 100 -- 05/20/99 8.26 7.12 0.00 1.14 0.81 ND -- ND ND ND ND ND 2.39 08/11/99 8.26 8.57 0.00 -0.31 -1.45 ND -- ND ND ND ND ND 2.6 11/I9/99 8.26 8.75 0,00 -0.49 -0.18 ND -- ND 2.4 ND 2.6 11 13 02/22/00 8.26 6.59 0.00 1.67 2.16 ND - ND ND ND ND 14.8 16.8 05/05/00 8.26 6.81 0.00 1.45 -0.22 ND - ND ND ND ND ND ND 08/28/00 8.26 8.35 0.00 -0.09 -1.54 ND -- ND ND ND ND ND ND 11/13/00 8,26 8.65 0.00 -0.39 -0.30 ND -- ND ND ND ND ND ND 02/09/01 8.26 8.40 0.00 -0.14 0.25 ND -- ND ND ND ND 7.66 8.21 05/11/01 8.26 7.80 0.00 0.46 0.60 ND -- ND 0.55 ND ND ND 5.29 08/10/01 8.26 8.82 0.00 -0.56 -1.02 ND<50 - ND<0.50 ND<0.50 ND<0.50 ND<0.50 7 9.8 11/21/01 8.26 9.32 0.00 -1.06 -0.50 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 5.4 4.7 02/07/02 8.26 7.34 0.00 0.92 1.98 ND<50 -- ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<2.5 ND<2.0 05/23/02 8.26 8.29 0.00 -0.03 -0.95 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 3.8 08/15/02 12.90 8.79 0.00 4.11 4.14 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 5.8 11/18/02 12.90 9.18 0.00 3.72 -0.39 -- ND<50 ND<0,50 ND<0.50 ND<0.50 ND<1.0 -- 120 02/13/03 12.90 8,44 0.00 4.46 0.74 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 32 05/12/03 12.90 8.60 0.00 4.30 -0.16 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 180 08/28/03 12.90 9.57 0.00 3.33 -0.97 -- 920 ND<5.0 ND<5.0 ND<5.0 ND<10. 680 11/24/03 12.90 9.36 0.00 3.54 0.21 - ND<1000 ND<10 ND<10 ND<10 45 -- 1600 02/26/04 12.90 8.59 0.00 4.31 0,77 -- 81 ND<0.50 ND<0.50 ND<0.50 ND<1.0 - 92 11195 Page 13 of 25 r --_,- 1�itis_'uL.tiSwS1�-` Tyr.•.••-.... l_•:tik\:_.iti.:w...uS_1�ti�:�uti�i�'._tiii�ti:�.L'�.isS:i.�S:.�.��.:5�-..:.1_...•.S:•___4�ti4__L..i.'L:t��tL.�.. _..__L...:�ti.:�._t.y�il:�Y..�.L�__......4_�_._t.............�_.1:1.4.2_.ti•�1.��..._.� .:.•4•Sll�'�S1Y�vi4�:.�.:.i -...��'�uY'._