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0 0 0 <br /> Table S. Summary of Soil Vapor Extraction and Treatment System Data,ARCO Station 434,Lodi,California <br /> TOTALS: <br /> TPH ettiat>alatfva�mvga�f�l!►r�,,��„,�,�a„�4l � <br /> Benzene cumulative removal(d),lbs 139 <br /> 'SPR tt nlative emgeval PROM A� x7145 <br /> (a)From start-up through June 1942 influent samples were not taken because there was no sample tap on the udet to the catalytic oxidizer <br /> Therefore,the influent concentrations(m parts per million by volume)are an estimate <br /> (b)From start-up through Apn11992,concentrations measured at the catalytic oxidizer outlet were performed using an organic vapor monitor <br /> cabbrated with isobutylene Effluent concentrations from July 24,1991,through April 28,1992,are reported m parts per million <br /> by vapor The dark line above June 30,1992,indicates a change in reporting concentrations As of June 30,1992,concentrations are <br /> reported in micrograms per liter <br /> (c) Pounds extracted calculation <br /> lbs/day=("x"µg/L)*(gram/1,000,000 jig)*Ob/453 6 gram)*("y"cubic feet/mm)*(1440 mm/day)*(28 31 LJcubic feet) <br /> where'k"is mfluent concentration and"y"cubic fee0nm is 100 <br /> (d) For pounds cumulative removal we used the removal lb/day result and multiplied it by the difference in the number of days between the next sampling event. <br /> (e)Gallons removal calculation(for TPH) <br /> gallons removed=lbs*gallon/6 2 lbs <br />