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W � � 1� � � � <br /> TABLE 1 <br /> RESULTS OF DIRECT READINGS OF VOC'S CONCENTRATIONS <br /> Montgomery Ward Auto Service Center <br /> 5400 Pacific Avenue, Stockton, CA <br /> Date Background Soil Vapor to Oxidizer Combustion Air Combustion Gases DRE") <br /> VOC's Temperature Flow VOC's Valve Flow Flow VOC's <br /> my <br /> OF acfm scfm U.my scfm(2) % scfmT) scfm a my scfm % <br /> 1017199 58 168 352 281 1 2980 8 38E-01 0 0 281 1 132 2 08E-02 97 52 <br /> i <br /> Note <br /> (1) scfm=acfm*(460+60)/(460+°F)*407/(407+15) <br /> where 407-atmospheric pressure in inches Water Gauge <br /> 15 -blower discharge pressure in inches Water Gauge <br /> (2) VOC's scfm=flow scfm* VOC's ppmv *10-6 <br /> (3)Combustion Air Flow scfm=300* Vave %/100 <br /> (4) Combustion Gases Flow scfm=Flow to Oxidizer scfm+Combustion Aar Flow scfm <br /> (5)Combustion Gases VOC's scfm=Combustion Gases Flow scfm * <br /> *(Combustion Gases VOC's ppmv-Background ppmv)* 10-6 <br /> (6)DRE % = (VOC's scfm-Combustion Gases Vac's scfm)/VOC's scf n*100 <br /> ppmv-volume parts per million <br /> OF- temperature In degree Farehneit,equal to(460+'F)in degree Kelvin <br /> acfm-actual cubic feet per minute <br /> scfm -standard cubic feet per minute (at 14 7 psia and 60 0F) <br /> DRE-destruction and removal efficiency <br /> 1 <br />