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• . 0 <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELEC'T'ED 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 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg11) (µg/1) (11g11) (Ag/1) (41) (41) <br /> MW-5 contnucd <br /> 12/08/97 1176 3605 -2429 013 — -- — — — — — -- <br /> 03/05/98 1176 3166 -- -1990 439 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 23 18 <br /> 05/27/98 1176 2828 - -1652 — ND<50 -- ND<O 50 ND<0 50 ND<O 50 ND<O 50 8 1 78 <br /> 07/21/98 1176 2840 - -1664 -012 ND<50 -- ND<O 50 2 ND<O 50 21 5 45 <br /> 10/14/98 1176 2942 -- -1766 -102 ND<50 -- ND<0 50 ND<0 50 ND<O 50 ND<6 50 6 29 <br /> 01125/99 1176 2856 -- -1680 086 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 35 42 <br /> 04/19/99 1176 2611 -- -1435 245 ND<50 ND<O 50 ND<0 50 ND<O 50 ND<0 50 28 22 <br /> 07/15/99 1176 2751 -- -1575 -1 40 ND<50 -- ND<0 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 36 <br /> 10/25/99 1176 2917 — -1741 -- N17<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 N]1<2.5 13 <br /> 01/27/00 1176 2870 — -1694 047 ND<50 — 072 078 ND<O 50 1 ND<2 5 ND<2 0 <br /> 06/26/00 1176 2590 — -1414 280 ND<50 0 ND<O 500 442 ND<D.500 314 NDC5 0 ND<2 0 <br /> 09122/00 1152 2822 — -1670 -256 ND<50 — 074 06 ND<O 50 ND<O 50 ND<2 5 ND<2 0 <br /> 12/26/00 1152 2816 — -1664 006 ND<50 0 — 1 14 NDm 500 ND<M00 ND<O 5M ND<5 0 ND<2 0 <br /> 03/07/01 1152 2788 -- -16.36 028 ND<50 0 — 1 ND<O 500 ND<0500 ND<0 500 ND<5 0 238 <br /> 06/26/01 1152 2885 - -17.33 -097 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 09112/01 1152 3078 -- -1926 -193 ND<50 — ND<O 50 95 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 12/12/01 1152 3106 -- -1954 -028 ND<50 -- NNO 50 ND<0 50 ND<O 50 ND<0 50 ND<5 0 ND<l 0 <br /> 03/20/02 1152 2977 -- -1925 129 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<0 50 ND<5 0 ND<2 0 <br /> 06/06/02 1152 3025 -- -1873 -048 -- ND<50 ND<0 50 24 ND<O 50 23 -- ND<2 0 <br /> 09/30/02 1152 3280 -- -2128 -255 — ND<50 2 25 16 52 -- ND<2 0 <br /> 12/30/02 1152 32.34 -- -2082 046 -- ND<50 062 067 ND<O 50 ND<1 0 ND<2 0 <br /> 03/29/03 1152 3125 - -1973 109 - ND<50 ND<O 50 ND<0 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 06/25/03 1152 3169 -- -2017 -044 — ND<50 ND<0 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 <br /> 09/24/03 1152 3401 000 -2249 -232 -- ND<50 ND<0S0 056 ND<O 50 ND<1 0 ND<2 0 <br /> 898t Page 11 of 35 <br />