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• • t Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS February 1990 Through March 2005 Former 76 Station 6981 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) (µg/1) (µg11) (µg/1) (µg/1) (µg/l) (µg/1) VW-1 continued 03/05/98 -- 31 33 000 -- -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 05/27/98 -- 2792 000 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 07/21/98 -- 2798 000 -- -- ND<50 -- ND<O 50 14 ND<O 50 14 ND<5 0 ND<2 0 10/14/98 -- 2900 000 _ __ ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 01/25/99 -- 28 19 000 -- -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 2 5 04/19/99 -- 2576 000 __ __ ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 52 3 07/15/99 -- 2709 000 -- -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 10/25/99 -- 2875 0 00 -- -- ND<50 - ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<2 5 ND<2 0 01/27/00 -- 2829 000 -- -- ND<50 - 095 ND<O 50 ND<O 50 063 10 4 6 06126/00 -- 2547 000 -- ND<50 0 -- ND<0 500 1 13 ND<O 500 128 ND<5 0 277 09/22/00 1090 2743 000 -1653 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 87 69 12/26/00 1090 2743 000 -16 53 000 ND<50 0 -- ND<O 500 ND<a 500 ND<O 500 ND<O 500 ND<5 0 ND<2 0 03/07/01 1090 27 18 000 -1628 0 25 ND<50 0 -- ND<O 500 ND<O 500 ND<O 500 Nn<a 500 ND<5 0 ND<2 0 06/26/01 1090 2806 000 -17 16 -088 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 09/12/01 1090 3001 000 -19 it -195 ND<50 - ND<O 50 ND<0 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 12/12/01 1090 3032 000 -1942 -031 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<l 0 03/20/02 1090 29 10 000 -1820 1 22 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 06/06/02 1090 29 52 0 00 -1862 -042 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 ND<2 0 09/30/02 1090 3200 0 00 -21 10 -248 -- 430 20 24 16 61 -- ND<2 0 12/30/02 1090 31 54 000 -2064 046 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 ND<2 0 03/29/03 1090 3063 0 00 -1973 0 91 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 - ND<2 0 06/25/03 1090 3089 000 -1999 -026 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- ND<2 0 09/24/03 1090 33 27 000 -2237 -238 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<2 0 12/30/03 1090 3276 000 -2186 051 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<2 0 seat Page 30 of 36