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Table 2 <br /> E LSTORIC 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 Tbickness water to 8260B benzene Xylenes 8021E 8260E <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg11) (µg/l) (µg11) (µg11) (pg/l) (pgll) (99l1) <br /> MW-5 continued <br /> 06/16/04 1152 33 27 000 -2175 -070 — 83 ND<O 50 051 ND<O 50 ND<l 0 — ND<O 50 <br /> 09/20/04 1152 3614 000 -2462 -2.87 ND<50 — NDN 50 ND<O 50 NDN 50 ND<1 0 — ND<0.50 <br /> MW-6 (Screen Interval in feet.49 0-69 0) <br /> 04/16/92 -- — -- — — — — -- <br /> 07/30/92 — -- — — -- 410 -- ND<O 5 ND<O 5 ND<O 5 NDN 5 — — <br /> 10/21/92 -- — — — — 180 — 22 08 ND<O 5 ND<O 5 — — <br /> 01/13/93 — -- — -- — 140 -- 36 ND<O 5 06 1 — — <br /> 04/26/93 1143 5028 000 -3885 — 730 — 11 ND<2 5 88 64 — — <br /> 07/26/93 1143 5133 000 -39 W -105 150 — ND<0 5 ND<O 5 07 ND<O 5 — — <br /> 10/20/93 1143 5179 000 -4036 -046 220 — 10 0.95 11 1 1 — — <br /> 01/17/94 1143 4929 000 -3786 250 570 — 36 094 91 24 — -- <br /> 04/25/94 1143 47 21 000 .3578 — 500 — 44 16 2 12 — -- <br /> 07/25/94 1143 4966 000 -3823 -245 88 — 18 ND<O 5 ND<O 5 ND<0 5 — -- <br /> I0/26/94 1143 5082 000 -3939 -116 ND<50 — ND<O 5 069 ND<0 5 059 — -- <br /> 01/25/95 1143 4807 000 -3664 275 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — <br /> 04/26NS 1143 43 66 000 -3223 441 ND<50 — ND<O 5 ND<O 5 ND<0 5 ND<O 5 — -- <br /> 07/26/95 1143 4463 000 -3320 -097 ND<50 — 055 19 ND<O 5 23 -- -- <br /> 10/25/95 1143 4546 000 -3403 -083 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- -- <br /> 01/24/96 1143 4249 000 -3106 297 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — -- <br /> 04/25/96 1143 3807 000 -2664 -- ND<50 — ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<40 -- <br /> 07/24/96 1143 3840 0 00 -2697 -033 ND<50 -- NNO 5 ND<0 5 ND<0 5 ND<0 5 NDC5 0 -- <br /> 10/23/96 1143 4011 000 -2868 -171 NDK50 — ND<O 5 NDN 5 ND<O 5 ND<O 5 ND<5 0 <br /> 01/20197 1143 36 68 000 -2525 343 ND<50 — ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<5 0 -- <br /> 07/16/97 1143 3403 000 -2260 — NDX50 — ND<0 5 ND<O 5 ND<0 5 ND<O 5 ND<5 0 -- <br /> 6981 Page 12 of 35 <br />