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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through.lune 2005 Former BP OR 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) (µg11) (µg/1) (11g11) (µg/]) (µg/1) (µg11) (µg/1) MW-15 (Screen Interval in feet: 5.0-20.0) 06/18/02 14.94 10.97 0.00 3.97 -- -- ND<250 ND<2.5 ND<2.5 ND<2.5 NDC5.0 -- 620 08/15/02 14.94 11.06 0.00 3.88 -0.09 - ND<500 ND<5.0 ND<5.0 ND<5.0 ND<l0 -- 490 11/18/02 14.94 11.47 0.00 3.47 -0.41 -- ND<250 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 270 02/13/03 14.94 10.63 0.00 4.31 0.84 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 21 05/12/03 14.94 12.89 0.00 2.05 -2.26 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 23 08/28/03 12,92 11.76 0.00 1.16 -0.89 -- 54 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 12 11/24/03 12.92 11.39 0.00 1.53 0.37 -- ND<50 ND<0.50 ND<0.50 ND<0,50 ND<I.0 -- 13 02/26/04 12.92 10.74 0.00 2.18 0.65 -- ND<50 ND<0.50 ND<0.50 ND<0.5.0 ND<1.0 -- ND<2.0 05/21/04 12.92 11.63 0.00 1.29 -0.89 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 1.8 08/26/04 12.92 12.29 0.00 0.63 -0.66 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 2.5 11/29/04 12.92 12.66 0.00 0.26 -0.37 -- ND<50 ND<0.50 ND<0.50 ND<0,50 ND<1.0 -- 7.3 02/15/05 12.92 11.47 0.00 1.45 1.19 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 2.5 05/25/05 12.92 11.03 0.00 1.89 0.44 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 5.2 MW-16 (Screen Interval in feet:5.0-20.0) 06/18/02 12.92 I1.94 0.00 0.98 -- -- ND<1000 ND<l0 ND<10 ND<10 ND<20 -- 2300 08/15/02 12.92 12.07 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 -0.20 - 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 11195 Page 22 of 25 �TV'.Sa.i.�:��:��__�'_�:�__�:::::::_:.:•:_•:_:_tiL.....�___i.::��titiuS.....v:....k..1:....5......_.__y...t:__t...�.�_.�._..�_tti\iu..i.i.....:..ti..i_..................._...........�....................._.i-.�......`iti.u.�.uu.i..i.4:.__.1....._.._.L...._._...__. � �.5�__