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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS February 1990 Through January 2011 Former 76 Station 6981 Date TOC Depth to LPH Ground- Change in Comments Sampled Elevation Water Thickness water Elevation TPH-G TPH-G Ethyl- Total MTBE MTBE Elevation 8015 GC/MS Benzene Toluene benzene Xylenes 8021B - ( ) y ( ) (8260B) (feet) (feet) (feet) . (feet) (feet) (1g/1) (µg/1) (µg/1) (µg/1) (11g/1) {µg/1) (11g/1) (1g/1) VW-2 continued • 6/28/2005 11.66 -- -- -- -- -- -- __ __ _ __ __ Dry well 9/9/2005 11.66 -- -- -- -- __ __ __ __ __ __ Dry well 10/26/2005 11.66 -- -- - -- -- __ __ __ __ __ __ Dry well 1/5/2006 11.66 -- -- __ __ __ __ __ __ __ __ Dry well 4/10/2006 11.66 -- -- __ __ __ __ __ __ __ __ Dry well 7/26/2006 11.66 -- -- _ __ __ __ __ __ __ __ Dry well 10/19/2006 11.66 -- -- __ __ __ __ _- __ __ __ Dry well 1/16/2007 . 11.66 -- -- -- -- __ __ __ __ __ __ Dry well 4/10/2007 11.66 -- -- __ __ __ __ __ __ __ __ Dry well 8/27/2007 11.66 -- -- - -- -- __ __ __ __ _- __ Dry well 10/29/2007 11.66 -- -- -- -- -- -- -- -_ __ __ __ __ Dry well 1/7/2008 11.66 Dry well 5/7/2008 11.66 -- -- - -- -- -- - __ __ __ Dry well 8/4/2008 11.66 Dry • 10/21/2008 11.66 - -- __ __ -_ __ __ __ __ Dry 2/10/2009 11.66 -- -- -- -- -- -- -- __ __ Dry 4/16/2009 11.66 -- -- __ __ __ __ __ __ Dry 7/28/2009 11.66 -- -- -- -- -- -- __ __ __ __ __ Dry 1/20/2010 11.66 -- -- _ -- -- __ __ __ __ -_ Dry 7/7/2010 11.66 -- -- __ __ __ __ __ __ __ __ Dry 1/20/2011 11.66 30.38 0.00 -18.72 23000 -- 1700 1900 2500 12000 - ND<50 l C IL 3;ow 21LO "Co 1300 Y VW-3 (Screen Interval in tceet:25.5-50.5) 7/24/1996 -- 38.34 0.00 __ __ ND<50 -- ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5.0 -- seat Page 47 of 54 ?TRC;