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Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through March 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 in 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (pg/1) (pgl]) (µg/1) (Pg/1) (pg/1) (µg/1) (pgll) (µg/1) <br /> MW-13 continued <br /> 01/13/93 -- -- -- -- -- ND<50 -- ND<O 5 N1<0 5 ND<O 5 ND<O 5 -- -- <br /> 04/26/93 1 1 52 51 15 000 -3963 -- ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- -- <br /> 07/26/93 1152 5221 000 -4069 -106 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- -- <br /> 10/20/93 1152 5274 000 -41 22 -053 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- <br /> 01/17/94 1152 50 19 000 -3967 255 180 2 3 2 9 39 -- -- <br /> 02/28/94 1152 4905 000 -3753 1 14 ND<50 -- ND<O 5 ND<O 5 ND<O 5 093 - -- <br /> 04/25l94 11 52 48 02 000 -3650 1 03 ND<50 -- ND<O 5 081 ND<O 5 14 -- -- <br /> 07/25/94 1152 5051 000 -3899 -249 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 - -- <br /> 10/26/94 1152 5174 000 -4022 -1 23 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- -- <br /> 01125195 11 52 48 93 000 -3741 281 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- -- <br /> 04/26/95 11 52 44 17 000 -3265 4 76 ND<50 -- 055 2 1 ND<O 5 21 -- -- <br /> 07/26/95 11 52 4536 000 -33 84 -1 19 ND<50 -- 059 21 ND<O 5 2 4 - -- <br /> 10/25/95 1152 4628 000 -34 76 -092 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- - <br /> 01/24/96 1152 43 30 000 -31 78 298 ND<50 - ND<p 5 ND<O 5 ND<O 5 ND<O 5 -- - <br /> 04/25/96 1152 3838 000 -2686 -- ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<40 -- Destroyed <br /> MW-14 (Screen Interval to feet 18 0-38 0) <br /> 08/21/99 11 59 2958 0 00 -1699 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 110 110 <br /> 10/25/99 11 59 2944 0 00 -17 85 -086 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 180 150 <br /> 01/27/00 11 59 28 88 0 00 -1729 0 56 ND<50 - ND<O 50 ND-<0 50 ND<O 50 ND<O 50 190 170 <br /> 06/26/00 11 59 2624 000 -1465 264 ND<50 0 -- ND<0 500 ND<0 500 ND<O 500 ND<O 500 151 346 <br /> 09/22/00 11 59 28 77 000 -17 18 -253 ND<50 -- ND<O 50 1 2 ND<O 50 17 290 250 <br /> 12/26/00 11 59 2864 000 -1705 0 13 ND<50 0 -- ND<0 500 ND<O 500 ND<O 500 ND<O 500 221 210 <br /> 03/07/01 11 59 2829 000 -1670 035 ND<50 0 ND<O 500 ND<O 500 ND<O 500 ND<O 500 147 198 <br /> 06/26/01 1159 2930 000 -1771 -1 01 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 110 120 <br /> 6981 Page 25 of 36 <br />