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. • <br /> i <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through June 2005 <br /> Former 76 Station 6981 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water 1n 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/l) (µg/1) (µg/1) (Ag/1) (µg/1) (µg11) <br /> MW-7 continued <br /> 01/13/93 -- -- -- -- -- 2400 -- 1000 95 35 120 -- <br /> 04/26/93 11 82 51 08 000 -3926 -- 500 -- 170 ND<2 5 ND<2 5 10 -- -- <br /> 07/26/93 11 82 52 11 000 -4029 -103 3800 -- 1200 59 92 140 -- <br /> 10/20/93 11 82 5263 000 -4081 -052 3500 -- 690 34 44 53 -- -- <br /> 01/17/94 11 82 50 10 000 -3828 2 53 15000 -- 4800 460 290 620 -- <br /> 04/25/94 11 82 4798 000 -36 16 2 12 8300 -- 3700 ND<25 400 130 <br /> 07/25/94 11 82 5046 000 -38 64 -248 9300 3300 54 420 120 -- -- <br /> 10/26/94 11 82 5163 000 -39 81 -1 17 3700 -- 1900 11 240 ND<10 <br /> 01/25/95 11 82 48 85 000 -3703 278 250 __ 29 1 1 8 2 1 <br /> 04126/95 11 82 4433 000 -3251 452 97 -- 2 4 074 ND<0 5 067 -- -- <br /> 07/26/95 11 82 4538 000 -3356 -105 330 -- 17 6 1 2 3 6 2 -- -- <br /> 10/25/95 11 82 4624 000 -3442 -086 <br /> 01/24/96 11 82 4329 000 -31 47 2 95 76 -- 1 8 ND<0 5 ND<0 5 055 -- <br /> 04/25/96 1182 3864 000 -2682 465 <br /> 07/24/96 11 82 3904 000 -2722 -040 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 8 6 -- <br /> 10/23/96 11 82 4084 000 -2902 -1 80 -- -- -- - -- -- -- Sampled Semi-annually <br /> 01/20/97 11 82 37 14 000 -2532 370 ND<50 -- 059 ND<0 5 ND<0 5 ND<0 5 20 -- <br /> 07/16/97 11 82 3471 000 -22 89 243 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 40 -- <br /> 10/15/97 11 82 3654 000 -2472 -183 ND<50 -- ND<0 5 ND<O 5 ND<0 5 46 46 63 <br /> 12/08/97 11 82 3637 000 -2455 0 17 <br /> 03/05/98 11 82 3198 000 -2016 4 39 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 140 120 <br /> 05/27/98 11 82 2870 000 -1688 328 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 46 53 <br /> 07/21/98 11 82 28 75 000 -1693 -005 ND<50 -- 069 088 ND<0 50 073 21 22 <br /> 10/14/98 11 82 2974 000 -1792 -099 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 33 33 <br /> 6981 Page 15 of 37 <br />