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r <br /> s <br /> t <br /> To calculate the pounds (lb) per day the concentration is <br /> multiplied by the volume of air produced in one day. <br /> The lab reports the Concentrations (C) of the air sampling in <br /> ug/liter. The first step is to convert this value to lbs/cf <br /> (pounds per cubic foot) . x 28.321/cf 0.0000006211b/cf <br /> ug/l x 0.000001g/ug x 0.0022051g/g <br /> The volume of air produced in one day, equals the flow rate (Q )x <br /> the time of flow. <br /> V a Q x T - cf/day a cf/min x 1440min/day <br /> P The volume is corrected to standard temperature and pressure <br /> r pSTPPressure @ 14.7 lb/int 9 STP <br /> V m Volume cf <br /> T = Temperature in degrees above absolute Zero - 491.58oR 0 STP. <br /> ~ Using the Ideal Gas Law PIV1/T1 - PZV2/T2 <br /> Salving for V2 -P1V1T2/P2T1 <br /> Assuming PI - P2 ® 14.7 lb/int, P cancels from the equation <br /> V <br /> heaving V2 - V1T2/T1. <br /> V1 - Q cf/m x 1440 min/day <br /> T2 m 491.58oR <br /> TI - 459.58 + Tor at sight. <br /> V2 - Q cf/min x 1440 min/day x 491.58oR/(459.580 + Tar) <br /> Q2 - Flow rate at standard temperature and pressure <br /> V2 = Q2 cf/min x 3440 min/day <br /> Q2 Q of/min * 491.58oR/(459.58o + ToF) <br /> X lb/day ® C ug/l x 0.0000000621 lb 1/ug cf x Q2 cf/min x <br /> 1440 min/day <br /> If you have any questions, please call (916) 668-5300. <br /> Sincerely yours, <br /> m <br /> George L. Converse Jack Z. Napper <br /> Pro jOCt Geologist Ca. Reg, <br /> Geologist 03037 <br /> cat <br /> 1 rMrs. <br /> *Ali ot2 uan�a8�nean Joaquin County Ain Count Health <br /> ir Quality <br /> r-- page 7 <br /> n <br />