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-' - <br /> re 9 r <br /> a..y <br /> SVE of Weathered Gasoline <br /> Shop 10 Maintenance Station <br /> 1603 South B Street, San Joaquin County, California <br /> (Temp = 20°C, 10% moisture content, Co= 222,000 mg/m3) <br /> 1 100% <br /> Co = Initial concentration of TPHg in 90% <br /> soil vapor <br /> Ct = Concentration of TPHg,in soil <br /> vapor at time, t <br /> Vg = Liters of air per gram of 80% <br /> 0.1 hydrocarbon <br /> m = mass of petroleum hydrocarbons <br /> Q =Volumetric flow rate 70% <br /> 60% <br /> o > <br /> V 0.01 50%° E <br /> 0 <br /> 40% <br /> n <br /> 30% <br /> 0.001 <br /> 20% <br /> 10% <br /> 0.0001 <br /> 0% <br /> 0 50 100 150 200 250 300 <br /> Qt/m (Ug) <br />