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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS February 1990 Through September 2004 Former 76 Station 6981 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Continents Sampled Elevation Water Thiclmess water to 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (1194) (41) (99/1) (98l1) (µg(1) (µ911) VW-2 continued 09130/02 1166 -- -- -- — -- -- — _ — _ _ Dry 12/30/02 1166 -- -- .- -- _ __ _ _ _ _ _ _ Dry 03/29/03 1166 — — -- -- — _ __ _ _ _ _ Dry 06/25/03 1166 — — -- -- — — -- -- _ _ _ Dry 09!24/03 1166 — — — — — -- — _ — _ Dry well 12/30/03 1166 .. -- — — -- _ __ _ _ _ _ _ Dry well 03/09/04 1166 -- — — — -- — _ _ _ Dry well 06/16/04 1166 — 0 00 _ _ _ — _. __ __ _ _ _ Dry well 09/20/04 1166 — — — — -- — _. -- -- _ _ _ Dry well VW-3 (Screen Interval to feet.25.5-50 5) 07/24/96 — 3834 000 -- — ND<50 -- ND<05 ND<O 5 ND<O 5 ND<O 5 ND<5 0 -- 10/23/96 — -- — — _ -- _ — -- _ _ — — Sampled Serru.annualy 01/21/97 — 3651 000 — -- NDX50 — ND<0 5 NTKO 5 ND<O 5 ND<O 5 58 — 07/16/97 — 3398 000 — — ND<50 -- ND<0 5 ND<O 5 ND4 5 ND<O 5 14 — 10/15/97 — 1584 000 __ — ND<50 .. ND cO 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 ND<2 0 12/08/97 -- 3575 000 __ _ __ _ _ __ _ — — 03/05/98 — 3120 0 00 __ __ ND<50 .- ND<O 50 NIXO 50 ND<0 50 ND<O 50 340 300 05/27/98 — 2796 000 — ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 NDQ 0 07/21/98 -- 2807 000 — — ND<50 — ND<O 50 17 ND<0 50 16 NDC5 0 ND<2 0 10/14198 -- 2910 000 — — NDc50 — ND<O 50 ND<O 50 ND<O 50 ND<0 50 ND<2 5 ND<2 0 01/25/99 — 2828 0 00 -- _ NDt3 000 _ ND<10 ND<10 ND<1 O ND<10 1300 1300 04/19/99 -- 25 75 0 00 -- _ ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 780 890 07/15/99 — 2718 000 — _ ND<500 -- ND<5 0 ND<5 0 ND<5 0 ND<5 0 2900 4900 10/25/99 — 2885 000 _. ND<250 23 ND<2 5 ND<2 5 ND<2-5 1100 850 6981 Pagc 31 of 35