Laserfiche WebLink
MASS-VOLUME CALCULATIONS OF EXTRACTED GASOLINE HYDROCARBONS <br /> IAssumptions <br /> Utilizing analytical data collected from air samples(Table 3) and from field measurements collected during <br /> the SVE pilot test(Table 4),the volume of extracted gasoline hydrocarbons at the site can be approximated <br /> Tire hydrocarbon mass removed during the operating period can be calculated using the following equation <br />' M=C - Q - t <br /> where M=cumulative mass recovered(kg) <br />' C=vapor concentration(kg/m') <br /> Q=extraction flow rate(m'/hr) <br /> t=operational period(hrs) <br />' The average inlet TPH- concentration and average flow rates during each time interval was utilized for calculating the <br /> g <br /> approximate mass/volume of extracted gasoline hydrocarbons <br /> 01 April to 30 June 2000 <br />' 1) The average analytical TPH-g concentration for this time interval was determined to be 160 ug/1 The average <br /> flow rate was calculated at 0 65 inches of water or approximately 44 cubic feet per minute(nomograph),the <br />' • operational period was equal to 2,184 hours of running time <br /> C Y 160,ug/l=0 000160 kg/m' <br /> Q � 0 65 inches water = 44 ft' <br /> /mm <br />' t=2,184 hours <br /> Converting Q to m3/hour yields <br />' Q=(44 ft'/min) -(60 ilii/hour) -(0 0283168m3/ft')=74 76 in'/liour <br /> M=C- Q - t=(0 000160 kg/m')-(74 76 rn'/hour) - (2,184 hours)=26 12 kg of gasoline <br />' Converting kg of gasoline to pounds of gasoline yields <br />' 26 12 kg of gas - 2 2046 lbs of gas/kg of gas =57 58 lbs of gasoline <br /> Converting pounds of gasoline to gallons of gasoline yields <br />' 57 58 lbs of gas - 0 16 gal of gas/lbs of gas = 9 21 gallons of gasoline <br /> 1 <br />