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AIR POLLUTION CONTROL DIVISION <br />COLORADO DEPARTMENT OF HEALTH <br /> <br />PRELIMINARY ANALYSIS <br />Page 5 of 7 <br />t~estern Slope Carbon <br />PERMIT NUMBER 0-13,004(1-4) Applicant s Name <br />Date 10-20-90 Review Engineer Scott J. Pfiller Control Engineer <br />Haul Roads: <br />427 trucks at 225 trips and 0.15 miles per trip on unpaved roads <br />EF = 0.6 (0.825) (5 )2 (3h5-t.') (\) <br />(30) ( 365 )(4) <br />s = silt content = 12.5% (assumed) <br />S = vehicle speed = 5 mph <br />H = no. of da}-s with 0.01" rain or more = 70 (assumed) <br />ti = no. of wi~eels on truck = 16 <br />LF = 0.54 lb/mile <br />• Q = (0.54 lb/mile)(427 trucks) (225 trips/truck)(0.15 miles/trip) <br />2000 lb/ton <br />= 3.9 TPl <br />• <br />SS% control for chemical stabilizers <br />controlled - 0.6 TPY' <br />55,000 Ton Stockpile (1 x 106 TPY thruput) - (assumed) <br />Truck dumping: EF = 0.007 lb/ton <br />Froniend loader: EF = 0.12 lb/ton <br />Total = 0.127 lb/ton <br />(? _ (0.127 lb/ton)(1 x 106 TPY) = 63 To ;, <br />2000 lb/ton <br />50° control for~aater <br />2controlled - 31'5 TPY <br />APC-73 (5-76) <br />