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Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through December 2004 <br /> Former 76 Station 6981 <br /> E <br /> Date TOC Depth to LPN Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg/1) (µgfl) (µg/1) (µ91f) (µg11) (µg/1) <br /> MW-16 continued <br /> 12/30/04 1220 3635 000 -2415 — 110 -- 10 ND<O 50 40 71 -- 12 <br /> P'I W-1 (Screen Interval in feet.52 5-72 5) <br /> 01/25/99 — 2891 - -- -- ND-50 — ND<O 50 ND<O 50 ND<O 50 is 94 84 <br /> 04/19/99 -- 2642 -- -- -- ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 42 34 <br /> 07/15/99 -- 2782 -- -- — ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 <br /> 10/25/99 -- 2949 - — ND<50 -- ND<O 50 085 ND<O 50 1 1 ND<2 5 ND<2 0 <br /> 01/27/00 -- 2897 -- -- — ND<50 — ND<O 50 06 ND<O 50 I 1 ND<2 5 ND<2 0 <br /> 06/26/00 — 2623 — -- — ND<50 0 — ND<0-500 0 904 ND<0 500 0 955 ND<5 0 475 <br /> 09/22/00 1188 2876 000 -1688 - ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<0 50 ND<2 5 ND<2 0 <br /> 12/26/00 1188 2865 000 -1677 0 L 1 ND<50 0 -- ND<O 500 ND<0 500 ND<0 500 ND<O 500 ND<5 0 ND<2 0 <br /> 03/07/01 1188 2837 000 -1649 028 ND<50 0 — NU<0 500 ND<0 500 NncO soo Nn<0 500 ND<5 0 ND<2 0 <br /> 06/26/01 1188 2936 000 -1748 -099 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 12 18 <br /> 09/12/01 1188 3132 000 -19 44 -196 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 15 20 <br /> 12/12/01 1188 3155 000 -1967 -023 ND<50 -- ND<O 50 ND<O 50 ND<0 50 ND<O 50 ND<5 0 75 <br /> 03/20/02 1188 3034 000 -1846 121 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 NDC5 0 ND<2 0 <br /> 06/06/02 1188 3082 000 -1894 -048 -- ND<50 ND<0 50 14 ND<O 50 14 -- ND<2 0 <br /> 09/30/02 1188 3335 000 -2147 -253 — ND<50 079 14 ND<O 50 2 -- 3 6 <br /> 12/30/02 1188 3292 000 -2104 0 43 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 03/29/03 1188 3197 000 -2009 095 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<2 0 <br /> 06/25/03 1188 3226 000 -2038 -0 29 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 09/24/03 :11 88 3456 0 00 -2268 -230 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 12/30/03 ,11 88 3415 0 00 -2227 0 41 — 54 ND<O 50 ND<O 50 ND<O 50 ND<10 -- ND<2 0 <br /> 03/09/04 1188 3312 000 -2124 103 -- ND<50 ND<O 50 0 93 ND<0 50 14 — ND<2 0 <br /> 06/16/04 1188 3380 000 -2192 -068 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<O 50 <br /> 6981 Page 28 of 35 <br />