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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through August 2004 Former SP Oil 11195 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 8260E Elevation Elevation (feet) (feet) (feet) (feet) (feet) (4g/1) (Ag/1) (41) (1g/1) (µg/1) GLgd) (41) (µg/1) CC-WS (Screen Interval in feet:DNA) 02/09/01 - -- -- -- - -- -- -- -- 1.22 253 -- 05/11/01 - - -- -- -- -- 0.811 -- 0.816 451 367 No Purge 08/10/01 -- 10.31 -- - ND<50 -- ND<0.50 0,86 ND<0.50 0.76 94 94 No Purge 11/21/01 - 10.86 - -- -- ND<50 -- ND<0.50 ND<0,50 ND<0.50 ND<0.50 5.1 5 No Purge 02/07/02 - __ __ __ Inaccessible Car Parked 05/23/02 -- 9.78 -- -- -- -- ND<100 ND<I,0 ND<1.0 ND<1.0 ND<2.0 - 230 No Purge 08/15/02 -- 10.24 -- -- ND<250 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 210 No Purge 11/18/02 10.66 - -- -- -- ND<50 ND<0.50 ND<0,50 ND<0.50 ND<1.0 -- 160 No Purge 02/13/03 9.86 -- -- ND<50 ND<0.50 ND<0,50 ND<0.50 ND<1r0 -- 20 05/12/03 -- 10.07 -- -- -- ND<50 ND<0.50 ND<0,50 ND<0.50 ND<1.0 - 150 No Purge 08/28/03 - -- -- -- - -- -- __ __ Inaccessible 11/24/03 - 10.76 0.00 __ __ 81 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 72 02/26/04 -- 10.00 0.00 __ - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 53 05/21/04 ]0.62 0.00 __ _ - ND<50 ND<0.50 ND<0,50 ND<0.50 ND<1.0 -- 22 08/26/04 -- -- -- -- -- car parked on well MW-1 (Screen Interval in feet: 8.0-23.0) 05/17/93 9,10 8.41 0.00 0.69 -- -- -- -- -- 0.6 2.1 -- 09/15/93 9.10 9.78 0.00 -0.68 -1.37 -- -- -- - - - 01/12/94 9.10 10.49 0.00 -1.39 -0.71 -- -- - -- - -- -- -- 05/12/94 9.10 9.77 0.00 -0.67 -- -- -- - -- - -- -- 10/07/94 9.10 10.54 0.00 -1.44 -0.77 -- -- -- -- -- - -- 12/08/94 9.10 10.75 0.00 -1.65 -0.21 1300 - 0.8 2.4 -- -- -- -- 02/21/95 9.10 8.44 0.00 0.66 2.31 69 -- -- -- -- -- -- 06/09/95 9.10 7.94 0.00 1.16 0.50 -- -- -- -, -- -- -- 11195 Page 1 of 22