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1 <br /> West February 2005 Excavation East <br /> ' Confirmation Samples [nd] <br /> . Mw3 B4 B3/9 B11 B12 Mw2 <br /> ' ....... ..............................Fifa......................... .......................... Gravel <br /> 5 ............... .nd.............................................. ...................... <br /> SiltyClay .........� lot.............................................. .-�. <br /> 10 nd nd [nd] .... F....... .920Q..................................... 380Q..... nd V <br /> Med Sand nd <br /> ' 15 nd nd Silty Clay <br /> nd <br /> ' 20 Silty Clay nd <br /> nd <br /> ' 25 nd <br /> (nd) Med Sand (nd) <br /> 30 ---n--d- <br /> 35 <br /> nd <br /> 35 0 20 40 60 <br /> ' feet <br /> ' 0 Pre Excavation Contamintation Contours ------- Ethyl Benzene Concentrations <br /> Soil ug/kg <br /> Post Excavation Contamintation Contours — — • Water(ug/1) 4113106 <br /> _ . Figurel9 Pombo Ranch <br /> West to East Ethyl Benzene Cross Section <br /> 1 <br /> 1 <br /> • <br /> 1 <br />