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i <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> May 1990 Through February 2005 <br /> Former BP Oil 11192 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE TBA Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg11) (µg11) (µg/l) (Pg/1) (µg/1) (µg/1) (41) <br /> MW-4 continued <br /> 09/15/93 6 75 2850 000 -21 75 -049 -- -- -- - -- -- - - <br /> 12/22/93 6 75 2833 000 -21 58 0 17 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- --04/01/94 6 75 2745 000 -2070 088 - - - - - - - -- <br /> 07/27/94 675 2746 000 -20 71 -001 190 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 --11/30/94 675 2797 000 -21 22 -051 -- - -- - -- - -- -- - <br /> 02/15/95 6 75 26 85 000 -20 10 1 12 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<1 0 <br /> 04/21/95 6 75 2477 000 -1802 2 08 - - -- -- - - - - <br /> 07/19/95 675 2407 000 -1732 0 70 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<1 0 - <br /> P 10/20/95 675 - - -- -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 ND<5 0 -- - Pre-purge <br /> D 10/20/95 675 2450 000 -1775 000 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 -- - <br /> P 04/23/96 675 -- -- -- ND<500 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 14 - -- Pre-purge <br /> D 04/23/96 6 75 21 13 000 -1438 3 37 ND<500 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<10 - -- <br /> 07/12/96 6 75 2042 000 -1367 0 71 - -- -- - -- - - - <br /> 10/18/96 6 75 1963 000 -1298 0 79 130 -- ND<0 5 ND<l 0 ND<l 0 ND<l 0 ND<10 - -- <br /> 02/26/98 675 1301 000 -626 6 62 ND<50 -- ND<0 5 ND<l 0 ND<l 0 ND<l 0 ND<10 -- <br /> 07/07/98 675 1261 000 -5 86 040 ND<50 -- ND<0 5 ND<l 0 ND<l 0 ND<1 0 ND<10 - -- <br /> 01/19/99 6 75 1459 000 -7 84 -1 98 ND<50 -- ND<1 0 ND<l 0 ND<l 0 ND<l 0 26 -- - <br /> 07/14/99 675 13 55 000 -680 1 04 ND<50 -- ND<l 0 ND<l 0 ND<l 0 ND<1 0 83 -- - <br /> 10/07/99 6 75 15 08 000 -8 33 -- 220 - ND<l 0 ND<l 0 ND<1 0 ND<1 0 170 -01/20/00 6 75 1540 000 -8 65 -032 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 320 - - <br /> 04/11/00 6 75 1431 000 -7 56 1 09 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 6 4 -- -- <br /> 07/14/00 6 75 1302 000 -627 1 29 98 - ND<0 5 ND<0 5 ND<6 5 ND<0 5 290 -- - <br /> j 10/26/00 6 75 1459 000 -7 84 -1 57 190 - 2 1 9 0 7 32 1000 - -- <br /> I <br /> 01/16/01 6 75 1441 000 -766 0 18 400 ND<0 5 ND<0 5 ND<0 5 ND<0 5 510 -- - <br /> 11192 Page 6 of 18 <br />