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f Vapor Treatment System Mass Removal Calculations <br /> June 10 - September 8, 1994 <br /> Sample TPH-g Removed 2 Removal Rate of Das Number Pounds <br /> cfm <br /> Date (ppmv) (1) ( ) (lbs/day) (3) of Operation Removed <br /> 06/17/94 40 103 1 00 8 800 <br /> 06/21/94 45 103 1 13 1 1 13 <br /> 06/30/94 35 78 066 7 462 <br /> 07/08/94 40 83 081 8 648 <br /> 07/14/94 69 113 189 4 756 <br /> 07/27/94 445 123 133 13 1729 <br /> 08/01/94 395 78* 075 2 150 <br /> 08/09/94 50 113 137 6 822 <br /> 08/18/94 40 100 097 9 873 <br /> 08/24/94 90 108 23 1** 236 <br /> 09/01/94 40 110 107 8 856 <br /> 09/08/94 40 103 100 3 300 <br /> Approximate Total Mass Removed — 77 45 <br /> • TPH gTM total petroleum hydrocarbons as gasoline <br /> ppmv parts per million by volume <br /> cfm = cubic feet per minute <br /> lbs/day = pounds per day <br /> * = Estimated at lowest measured flow rate during quarter for conservatsve estimate result <br /> ** = vapor welts off for quarter <br /> (1) = measured with FID on blower discharge <br /> (2) = calculated from field measured air velocity reading <br /> (3) = removal rate derived from formula using the universal gas constant and 65 as the molecular weight of <br /> gasoline TPH (lbs/day) _ (0000243) X (cfm) X (ppmv) <br /> Groundwater Treatment System Mass Removal Calculations <br /> June 10 - September 8, 1994 <br /> Total Gallons Treated TPH-g Influent TPH g Effluent Pounds Removed <br /> 413,500 68 <10 0 238 <br /> * = Formula concentration removed (Influent effluent) X total gallons treated X conversion factors <br /> Ng/L = micrograms per liter (parts per million) <br /> Ib = pounds <br /> i <br /> e g, 6L 9 x 413,500 gallons x 3 84n x 1 loel lAg = 0 238 Ib <br /> gallo0102Rv74 202L 1®�GROUNDWATER <br /> TECHNOLOGY, INC <br />