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6 <br /> Table 5 Post-Excavation Contaminant Mass Estimate Calculations (TPH-G in Soil) <br /> Sinclair Trucking <br /> 3780 West Linne Road <br /> Tracy,'California <br /> Project No.7030.2 <br /> matrix area cont. load cont. <br /> Layer zone type depth -ft zone thickness ft2 mg/kg K <br /> 1 Core silty clay 6 to 10.5 Vadose 4.5. 54 7,10$ 74 <br /> 2 Ring silty clay 6 to 10.5 Vadose 4.5 1,784 1,327. 459 <br /> 3 Deep Core silty sand 10.5 to 14 Vadose 3.5 922 4,414 614 <br /> 4 Deep Ring silty sand 10.5 to 14 Vadose 3.5 4,446 1,338 897 <br /> Total Contaminant 2,043 <br /> Pounds 4,506 <br /> Gallons 727 <br /> C,eofagiralTtclurfcs lxc. <br /> 10/18/1005 <br />