Laserfiche WebLink
MASS CALCULATIONS OF EXTRACTED HYDROCARBONS <br /> . Mel Bokides Petroleum - 501 West Lodi Avenue Lodi, California <br /> ' The hydrocarbon mass (gasoline)removed during the operating period can be calculated using the <br /> following equation M= C•Q•t <br /> where M=cumulative mass recovered (kg) <br /> C =vapor concentration (kg/m3) <br /> ' Q =extraction flow rate (M3/hr) <br /> t=operational period (hrs) <br />' On 12 May 1999 an eight-hour soil vapor extraction test was conducted at the MBP Lodi site Four <br /> soil vapor samples were collected at regular intervals and the following mass calculation was made <br /> from the field data and the analytical results of the soil vapor samples <br />' using =C 23 000 /1 = 0 023 k /m3 <br /> � µg kg <br /> /ml <br /> =53 cfm (10 00 am) = 31 M3 Air <br /> rt = 2 hrs (time sum of sample intervals) <br />' 0 023 • 31 - 2 = 142 kg of gasoline <br /> 142 kg • 2 2046 lbs/kg = 3 14 lbs of gasoline <br /> to convert lbs of gasoline to gallons of gasoline, use 0 16 gal/lbs <br /> 3 14 lbs of gal • 0 16 gal/lbs= 0.5 gallons of gasoline <br /> --T—Time Frame C Q t Gallons Removed <br /> {µg/,Aglm3 SCFM 1(m /hr) (hours) <br /> 8 00 to 10 00 0 023 53/31 2 05 <br /> 10 00 to 12 00 0019 58134 2 045 <br /> 12 00 to 14 00 0 020 60135 2 049 <br /> 1400 to 1600 0019 64/37 2 049 <br /> Total of 1.93 gallons of gasoline removed <br />' Using the same calculation as above the total volume of benzene removed over the eight hour test <br /> was 0 003 gallons <br /> 1 <br /> Advanced GeoEnvwronmental,Inc <br />