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a <br /> I i <br /> I I <br /> r <br /> • APPENDIX C <br /> MASS CALCULATIONS OF <br /> r EXTRACTED HYDROCARBONS (VOCs) ; <br /> Former STOCKTON, PLATING Facility <br /> 632 South Eldorado Street, Stockton, California <br /> The hydrocarbon mass removed during the operating periodcanbe calculated using the following <br /> equation M = C•Q•t <br /> E <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 /> The calculation for the second and third quarter for a total of 135 days(24-hour)period was used to <br /> determination of mass of hydrocarbons removed over the reporting period Operational parameters <br />' were regularly measured and SVE system restarts occurred during the quarter <br /> , <br />' 02-23-04 to 08-18-04 <br /> using C = (200+0+130+0+0+78+44 gg/1) — 7 = 64 6 gg/1 • 10-6r(1-kg/gg-m3) = 0 000065 kg/m3 <br />' Q = 175 standard cubic feet minute (cfin) (average) x (1 69) = 295 8 m3/hr <br /> t = 3815 hours (sum of operational hours) <br /> , <br /> M= C•Q•t= 0 000065 kg/m3 ' 295 8 ni3/hr • 3,815 his= 73.3 kg gasoline <br /> 73 3 kg gasoline • 2 2046 lbs/kg = 161 7 lbs gasoline <br />' to convert lbs gasoline to gallons gasoline, use 0 16 gal/lbs . <br /> 1617 lbs of gal • 0 16 gal/lbs = 25.9 gallons,of gasoline ' <br /> l 5 <br /> 1 E 1 <br /> '1 <br /> s <br /> � S <br /> i <br />