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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 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (go) (µg/1) (µ9/1) (4g11) (11g/1) (µg11) (µg/1) (µg11) <br /> PTW-1 continued <br /> 06/26/01 1188 2936 000 -1748 -099 ND<50 — NDN 50 ND<O 50 ND<O 50 ND<0 50 12 18 <br /> 0912/01 It 88 3132 000 -1944 -196 ND<50 NDN 50 ND<O 50 ND<O 50 ND<O 50 15 20 <br /> 12112!01 1 l 88 3155 000 -1967 -023 ND<50 -- NDN 50 NDN 50 ND<O 50 ND<O 50 ND<5 0 75 <br /> 03/20/02 1188 3034 000 -1846 121 ND<50 -- NDN 50 NDN 50 NDN 50 ND<0.50 ND<5 0 ND<2 0 <br /> 06/06102 1189 3092 000 -1894 -048 — ND<50 NDN 50 14 NDN 50 14 — ND<2 0 <br /> 09/30102 1188 33 35 000 -2147 -253 — ND<50 079 14 ND<O 50 2 — 36 <br /> 12/30102 1189 3292 000 -2104 043 — ND<50 ND<O 50 NDN 50 NDN 50 ND<1 0 — ND<2 0 <br /> 03/29/03 1189 3197 000 2009 095 — ND<50 NDN 50 ND<O 50 ND<O 50 ND<1 0 — ND<2 0 <br /> 06/25/03 1189 3226 000 -2038 -0.29 — ND<50 NDN 50 ND<O 50 NDN 50 ND<l 0 — ND<2 0 <br /> 09/24/03 1188 3456 000 -2268 -2.30 -- ND<50 ND<O 50 ND<O 50 ND<0 50 ND<l 0 — ND<2 0 <br /> 12/30/03 1188 3415 000 -22.27 041 — 54 NDN 50 ND<O 50 ND<O 50 ND-1-1 0 -- ND<2 0 <br /> 03/09/04 1188 33 12 000 .2124 103 — ND<50 NDN 50 093 ND<0 50 14 -- ND<2 0 <br /> 06/16104 1188 3380 000 -2192 -068 — ND<50 NDN 50 NDN 50 ND<O 50 ND<10 -- ND<O 50 <br /> 09/20/04 1188 3673 000 -2485 -293 ND<50 — NDN 50 ND<O 50 ND<O 50 ND<10 -- ND<O 50 <br /> VW-1 (Screen Interval m feet 24.5-49.5) <br /> 07/24/96 — 3827 000 — — 180 — 19 19 16 77 130 — <br /> 10/23/96 -- — — -- — -- _ -- — — — -_ — Sampled Semi-annually <br /> 01/21/97 — 3647 000 ._ _ ND<50 _ ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<5 0 -- <br /> 07/16/97 — 33 89 000 -- — ND<50 — NDN 5 NDXO 5 NIXO 5 NDN 5 ND<5 0 — <br /> 10/15/97 — 3572 000 — ND<50 — NDN 5 ND<O 5 ND<O 5 NDN 5 ND<5 0 ND<2 0 <br /> 12/08/97 — 3562 000 <br /> 03/05/98 -- 3133 000 — -- ND<50 ND<0 50 NIKO 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 <br /> 05/27/98 -- 2792 000 — — ND<50 _ NDN 50 ND<O 50 ND<0 50 ND<O 50 NDK2 5 ND<2 0 <br /> 07/21/98 -- 2798 000 — — ND<50 — NDN 50 14 ND<0 50 14 ND<5 0 ND<2 0 <br /> 6981 Page 28 of 35 <br />