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VAPOR EXTRACTION AND TREATMENT SYSTEM CALCULATIONS: <br /> AMV Project: No. I a,o S— o S <br /> Extraction Rate <br /> From pilot test observation, the design flour' rate-e€h&•va r_ x on well <br /> is 3 S standard`cubic4eer,j* minute (scfm)'o <br /> standard cubic feet per day (scfd). Laboratory.ar sis-of.iatnpl..e(s).collected'dq#ng-the pilot <br /> test (laboratory report(s) enclosed) indicates the=tott'conceiif ation 'pf g ssoline=petroleum <br /> hydrocarbons (TPHg) in the vapor streain:'from-this-veli, to be'.15 o_.g z parts,,ppr miMon.by <br /> volume (ppmv), with a benzene fraction of : 3'-- percent,--.' `Vould_: i-Ae rrmximurn <br /> expected concentration at start-up. Continued system.-,,o' eiatxon.,shoii d..result"in decreased <br /> concentration. <br /> The maximum volumetric rate of TPffg-ext tion Wt9culated'as'£©Ilows: <br /> r ,C r- <br /> Using the ideal gas law to determine the equivalent pound-moles (ib-moles) fdr ;," scfd <br /> gives: <br /> Q •► ,--•� t! -� s s F/��1 <br /> Com.?3 ,►r-,.f�� �� �3 �,•2S <br /> Using the molecular weight of hexane, tlhe rats'of'TPHg,refracted on. a.pounds-basis is. <br /> calculated as. .°�A <br /> ' With a benzene fraction of 3 percent, the,lb=rl oke .rage o�.`l�e atre extrat is calvulated. <br /> as: d._..: . <br /> �­3 <br /> On a pounds basis, the extraction rate for benzene is calculated as <br />