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February 2005 Excavation <br /> 1 North Confirmation Samples [nd] South <br /> Mwl 05 Mw4/ <br /> Mw5 Mw4B EB4 B11 B7 <br /> .... ........I.,............. ....... Fill I 1.1................ ........... Silty Clay Silty Clay <br /> Silty Clay ............... <br /> ............ft.............. Med. Sand <br /> 10 - <25 nd nd V <br /> 15 Med, Sand Silty Cla�' Med. Sand <br /> An d m<r <br /> nd nd <br /> 1 <br /> 20 Silty Clay <br /> ndnd ----------- <br /> (nd) (nd) <br /> 25 Silty Clay -------------------- <br /> 30 <br /> nd Med. Sand <br /> 35 0 20 40 60 <br /> 10 - Silty <br /> Sand feet <br /> nd <br /> (nd) Toluene Concentrations <br /> 45 Soil ug/kg <br /> Water(ug/1) 4/13/06 <br /> 50 Pre Excavation Contamintation Contours ------- <br /> Post Excavation Contamintation Contours <br /> 1 <br /> 1 <br /> Figurel 4 Pom.bo Ranch <br /> North to South Toluene Cross Section <br />