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1 <br /> MASS CALCULATIONS OF <br /> EXTRACTED HYDROCARBONS (Gasoline) <br /> Chapin Bros , Inc <br /> 1766 Monte Diablo Avenue, Stockton, California <br /> 1 The hydrocarbon mass removed during the operating period can be calculated using the following <br /> 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 />' 14 June to 22 July 1998 — <br /> using C=52 and 18012 mg/l=0 000116 kg/m3 <br /> Q= 150 cfm average=88 2 m3/hr <br /> t =912 hrs operation <br />' 0 000116. 88 2 •912=9 33 kg of gasoline <br /> 20 57 kg-2 2046 lbs/kg=20 57 lbs of gasoline <br /> ' to convert lbs of gasoline to gallons of gasoline,use 0 16 gaUlbs <br /> 20 57 Ibs of gal-0 16 gal/lbs=3 2 gallons of gasoline <br /> 22 July to 31 August 1998 <br /> usmg C= 180 and 21012 ug/1=0 000195 kg/m' <br /> Q= 150 cfm average=88 2 m3/hr <br /> ' t =960 hrs operation <br /> 0 000116. 88 2 -960= 16 5 kg of gasoline <br /> ' 16 5 kg-2 2046 lbs/kg=36 38 lbs of gasoline <br /> to convert lbs of gasoline to gallons of gasoline,use 0 16 gal/lbs <br /> 36 38 lbs of gal-0 16 gal/lbs=5 8 gallons of gasoline <br /> ' 31 August to 30 September 1998 <br /> using C=210 and 40012 mg/l=0 0002 kg/m3 <br /> ' Q= 150 cfm average= 88 2 m3/hr <br /> t =720 hrs operation <br /> ' 0 000116- 88 2. 720= 12 7 kg of gasoline <br /> 12 7 kg-2 2046 lbs/kg=38 lbs of gasoline <br /> to convert lbs of gasoline to gallons of gasoline,use 0 16 gal/lbs <br /> ' 28 lbs of gal- 0 16 gal/lbs=4 48 gallons of gasoline <br /> ' Total of 13.48 gallons of gasoline (TPH-g)were removed <br /> Advanced GeoEnvironmenial,Inc <br />