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i • i <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through December 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 8021B 8260E <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µ911} (µg11} (µ9J1) (µg11) (µgli) <br /> MW-4 continued <br /> 06/26/01 1163 2888 000 -1725 -095 ND<50 — ND<O 50 ND<O 50 ND<0 50 ND<O 50 ND<5 0 ND<2 0 <br /> 09/12/01 1163 3078 000 -1915 -190 ND<50 — ND<OZO ND<0 50 ND<O 50 NDN 50 ND<5 0 ND<2 0 <br /> 12/12/01 1163 3105 000 -1942 -027 ND<50 - ND<0 50 Nr<0 50 ND<O 50 ND<0 50 ND<5 0 ND<1 0 <br /> 03!20102 1163 2986 000 -1823 119 ND<50 — ND<0.50 ND<O 50 NDN 50 NDN 50 ND<5 0 ND<2 0 <br /> 06/06/02 1163 3027 000 -1864 -041 — ND<50 NDN 50 22 ND<O 50 22 -- ND<2 0 <br /> 09/30/02 1163 3278 000 -2115 -251 — ND<50 079 17 088 43 -- NIX2 0 <br /> 12/30/02 1163 3237 000 -2074 041 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<10 - ND<2 0 <br /> 03/29/03 1163 3132 000 -1969 105 — ND<50 ND<0 50 ND<O 50 ND<O 50 13 ND<2 0 <br /> 06/25/03 1163 3167 000 -2004 -035 -- ND<50 NDN 50 ND<O 50 ND<0 50 ND<10 - ND<2 0 <br /> 09/24/03 1163 3401 000 -2238 -234 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 12/30/03 1163 3351 000 -2188 050 -- ND<50 NDN 50 076 ND<O 50 2.5 — 21 <br /> 03/09/04 1163 3260 0 00 -2097 091 — ND<50 NDN 50 ND<0 50 ND<O 50 NIXI 0 — ND<2 0 <br /> 06/16/04 1163 33 26 000 -2163 -066 -- ND<50 ND<0 50 ND<0 50 ND<O 50 ND<l 0 -- ND<O 50 <br /> 09/20/04 1163 36 12 000 -2449 -286 ND<50 -- NDN 50 ND<O 50 ND<0 50 ND<1 0 -- ND<0 50 <br /> MOM 1163 3560 000 -2397 052 ND<50 — ND<U0 ND<O 50 ND<O 50 21 -- ND<0 50 <br /> MW-5 (Screen Interval In feet 50 0-55 0) <br /> 02/21/90 -- -- — -- -- 3600 — 77 16 05 17 -- <br /> 10/18/90 — - -- _ — — _ — _ _. _ Dry <br /> 11/19/90 — — __ _ _ _ _ _ _ Dry <br /> 12/27/90 — — -- _. _ <br /> — -- -- Dry <br /> 01/28/91 — — -- -- -_ - -- -- -- -- - -- — Dry <br /> 04/02/91 -- -- — _ -- _ -- -- -- <br /> 07/18/91 -- -- -- _ __ — _ _ _ ._ — <br /> — — Dry <br /> 09/30/91 -- -- -- — -- -- _ -- -- -- <br /> — — Dry <br /> 8881 Page 9 of 35 <br />