Laserfiche WebLink
Air Perms AppGt®an Jbr Lora~dm Caw( Cm~mry <br />Resources, Denver, Colorado, December, 1996). Approximately 780,000 tons/year will be <br />extracted from the surface mine. <br />Emissions will be 0.1761 lbs/ton * 780,000 tons = 137,358.0 Ib/year = 68.68 tons/year <br />Underground Mining <br />The moisture content of coal from underground mining will be 4.3% (Lorencito Canyon Mine <br />Permit Application submitted to Division of Minerals and Geology, Colorado Department of <br />Natural Resources, Denver, Colorado, December, 1996). Approximately 420,000 tons per year <br />will be extracted from the P-3 mine, 324,000 tons per year from the R-1/R-2 mine, and 894,000 <br />tons per year from the P-1/P-2 mine. <br />Emissions will be 0.1761 lbs/ton * 1,638,000 tons = 288,451.8 Ib/year = 144.23 tons/year <br />Trucks Hauling Coal to Loadout Facility and Return <br />Process Description <br />The 85-ton trucks will haul the coal from the four mining facilities to the Loadout facility. <br />Emissions are also produced when the trucks return empty to the mining sites. <br />Emission Factor and Controls <br />The daily emission factor is: k*5.9*(S/12)*(S/30)*(W/3)~0.7*(w/4)'0.5 Ib/vehicle mile <br />(AP~2, Section 11.2.1, dated 9/88) <br />where: <br />k =particle size multiplier (dimensionless) = 0.36 for PM~o <br />s =silt content of road surface material under gravel (%) = 27% (Lorencito Canyon Mine Permit <br />Application submitted to Division of Minerals and Geology, Colorado Department of Natural <br />Resources, Denver, Colorado, December, 1996) <br />S =mean vehicle speed (mph) =10 mph with full load, 15 mph returning empty (Lorencito <br />Canyon Mine Permit Application submitted to Division of Minerals and Geology, Colorado <br />Department of Natural Resources, Denver, Colorado, December, 1996) <br />W =mean vehicle weight (tons) = 66 tons empty, 151 tons fully loaded <br />w =number of wheels = 6 <br />r~ <br />LJ <br />• <br /> <br />....,:„~~ ,~. ,~, 21 <br />