Laserfiche WebLink
I , <br /> VAPOR EXTRACTION AND TREATMENT SYSTEM CALCULATIONS <br /> AMV Project No. go S--o j <br /> ' Extraction Rate <br /> From pilot test observation, the design flow rate 44-41ae vapor extraction well ' t Vw-Za,- <br /> is _ 29 standard cubic feet per minute (scfm) or <br /> standard cubic feet per day (scfd). Laboratory analysis of sample(s) collected during the pilot <br /> ' test (laboratory report(s) enclosed) indicates the total concentration of gasoline petroleum <br /> hydrocarbons (TPHg) in the vapor stream,from this well 'to'be '1oo `prrtper million by <br /> volume (ppmv), with a benzene fraction of .o percent. This would be the maximum <br /> ' expected concentration at start-up. Continued system operation should result in decreased <br /> concentration. <br /> The maximum volumetric rate of TPHg extraction is,calculated as follows: <br /> 7?.1 d S���V �o ovo �4 J_ ��� � Sc�>A 7 <br /> Using the ideal gas law to determine the equivalent pound-moles (lb-moles) for. ��(5 scfd <br /> gives: <br /> A;.,. r <br /> sC if , .t-t <br /> ' <br /> Using the molecular weight of hexane, the rate of TPHg extracted on a pounds basis is <br /> calculated as: <br /> ' With a benzene fraction of O percent, the lb-moles rate of benzene extraction is calculated <br /> as: l L <br /> 7 <br /> On a pounds basis, the extraction rate for benzene is calculated as: <br />