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West February 2005 Excavation East <br /> 1 Confirmation Samples [-] <br /> Mw3 B4 B3/9 B11 B12 W2 <br /> ................ .. ................................................... ........................... <br /> 5 ... ................... �...�._ <br /> ,� � ... . . .... .......... Gr vel <br /> SifSilty Y Ind Fill <br /> Clay / ..... ....... ..................................................-... .......................... <br /> 10 nd nd t n ,l. ..1.000..................................... 200............. �` nd V <br /> ' e an <br /> 15 Silty Clay <br /> nd nd <br /> nd <br /> 20 Silty Clay nd <br /> 1 nd <br /> 25 nd <br /> ' 30 <br /> (nd) Med Sand (nd) <br /> nd <br /> ' 35 0 20 40 60 <br /> feet <br /> • Pre Excavation Contamintation Contours ------- <br /> Benzene Concentrations <br /> Soil ug/kg <br /> ' Post Excavation Contamintation Contours — — – Water(ug/l) 4/13/06 <br /> 1 <br /> Figure11 Pombo Ranch <br /> 1 West to East Benzene Cross Section <br /> 1 <br /> • <br />