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CALCULATIONS <br /> Beacon Station No. 695 <br /> 900 South Cherokee Lane <br /> Lodi, California <br /> Purpose: <br /> To provide example calculations of total petroleum hydrocarbon (TPH) as gasoline extracted from the soil and emitted to <br /> the atmosphere by the soil vapor extraction system <br /> Assumptions• <br /> • Assumes worst case TPH as gasoline concentrations remain constant throughout course of system operation. <br /> Method: <br /> 1) Extraction <br /> i <br /> TPHj - tQ,} [TPHj) (LBMOLE 86LB (1440 MINI <br /> 1x10 387F P (LBMOLE) DAY <br /> Where TPH,is mass flow rate of TPH as gasoline in lbs/day extracted from soil <br /> Q, is the inlet soil vapor process stream flow rate in scf n <br /> [TPH], is the inlet concentration of TPH as gasoline in ppmv prior to the control device <br /> 2) Emission <br /> [TPHa LBMOLE ( 86LB 1 f i�K <br /> N <br /> �H` - ��`} 1x106 387F7'3 LBMOLE l Y <br /> Where TPI , is mass flow rate of TPH as gasoline in lbs/day emitted to the atmosphere <br /> Q. is the effluent soil vapor discharge rate <br /> [TPHJ is the effluent concentration of TPH as gasoline in ppmv <br /> LRP564 sis <br />