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. v <br /> ASS O C I ATE S I N C . <br /> SOIL MASS BALANCE CALCULATIONS (continued) <br /> 1 <br /> Average TPHg concentration(Avtphg) Average TPHg concentration(Atphg) <br /> Avtphg calculated using sample results from Avtphg calculated using sample results from <br /> borings B1,B2,VE 1, and VE3. borings B1,B2,and MW6. <br /> (920+240+760+340+1.0+1.0+2.3+140)/8= (250+1.0+6.6+1,800)/4= <br /> ' =300 mg/kg =514 mg/kg <br /> 28.3 liters(1)= 1 113 28.3 liters= 1 fr <br /> 1.7 kg= 1 liter(1) 1.7 kg= 1 liter(1) <br /> ling= 1E-6 kg 1mg= 1E-6 kg <br /> Mass(M)=V x Avtphg Mass(M)=V x Avtphg <br /> ' M=(39,17611)(300 mg/kg) M=(53,107.5 ft3)(514 mg/kg) <br /> = 11,752,800 ft3mg/kg =27,298,026 ft3mg/kg <br /> =(11,752,800 ft3mg/kg)(28.3 1/ft)(1.7 kg/1)(lE-6 kg) _(27,298,026 ft3mg/kg)(28.3 1/113)(1.7 kg/1)(lE-6 kg) <br /> =565.4 kg TPHg = 1,313 kg TPHg <br /> ' s:\environmental\25291\reports\irp.doe <br />