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Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through September 2004 <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 in 8260B benzene Xylenes 8021E 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µ911) (994) (99/1) (1g11) (µ91l) (µ9/l) <br /> MW-6 continued <br /> 10/15/97 1143 3579 000 -2436 -176 NIK50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 ND<2 0 <br /> 12/08/97 1143 3565 000 -2422 014 <br /> 03105M 1143 3162 000 -2019 403 ND<50 — ND<0 50 ND<O 50 ND<O 50 ND<O 50 44 ND<2 0 <br /> 05/27/98 1143 2819 000 -1676 — ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0.50 ND<2 5 ND<2 0 <br /> 07121/98 1143 2817 000 -1674 002 ND<50 — ND<O 50 07 ND<O 50 07 ND<5 0 ND<2 0 <br /> 10/14/98 1143 2913 000 -1770 -096 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2-5 ND<2 0 <br /> 01125/99 1143 2822 000 -1679 091 ND<50 — ND<O 50 NIXO 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 <br /> 04/19/99 1143 2592 000 -1449 230 ND<50 -- ND<O 50 N1:<0 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 <br /> 07/15/99 1143 27.20 000 -1577 -128 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 <br /> 10/25/99 1143 2883 000 -1740 -- ND<50 — ND<O 50 ND<O 50 ND<O 50 074 ND<2 5 27 <br /> 01/27/00 1143 2835 000 -1692 048 ND<50 -- ND<O 50 065 ND<O 50 16 ND<2 5 ND<2 0 <br /> 06/26/00 1143 2564 000 -1421 271 ND<50 0 — NDOO 500 0 671 ND<o.500 0 787 ND<5 0 ND<2 0 <br /> 09/22/00 1143 2810 000 -1667 -246 ND<50 -- NDaO 50 093 NIKO 50 11 ND<2.5 ND<ZO <br /> 12/26/00 1143 2801 000 -1658 009 ND<50 0 -- ND<O 500 ND<O 500 ND<O 500 ND<0.500 ND<S 0 ND<2 0 <br /> 03/07/01 1143 2775 000 -1632 026 ND<50 0 -- NDcO 500 NIX0.500 ND<O 500 ND<O 500 ND<5 0 ND<7-0 <br /> 06/26/01 1143 28 70 000 -1727 -095 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 09/12/01 1143 3059 000 -1916 -189 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 12/12/01 1143 3086 000 -1943 -027 ND<50 — ND<O 50 12 ND<O 50 17 ND<5 0 ND<1 0 <br /> 03/20/02 1143 2967 000 -1824 119 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 06/06/02 1143 3010 000 -1867 -043 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<2-0 <br /> 09/30/02 1143 3256 000 -21 13 -246 -- 190 76 10 62 27 -- ND<2 0 <br /> 12/30/02 1143 3206 000 -2063 050 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 03/29/03 1143 3116 000 -1973 090 - ND<50 ND<O 50 071 ND<O 50 ND<10 — ND<2-0 <br /> 06/25/03 1143 3148 000 -2005 -032 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<L 0 — ND<2.0 <br /> 6981 Page 13 of 35 <br />