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Earth Moving PM10 Dust Emissions <br />EF Unit Existing Project <br />02-035 623 Scraper Grading Scrapers 1.54 lbs/VMT 32.3 37.6 <br />04-971 JD Grader Grading Graders 1.54 lbs/VMT 2.7 8.1 <br />2025-26 CAT 623 Scraper Grading Scrapers 1.54 lbs/VMT 0 51.7 <br />04-075 JD 850C Dozer Bulldozing Rubber Tired Dozers 0.75 lbs/hour 213.7 229.0 <br />10-020 CAT D8 Dozer Bulldozing Rubber Tired Dozers 0.75 lbs/hour 641.2 671.7 <br />18-075 JD 850K Dozer Bulldozing Rubber Tired Dozers 0.75 lbs/hour 335.9 366.4 <br />20-020 JD 1050K LARGE DOZER Bulldozing Rubber Tired Dozers 0.75 lbs/hour 610.6 641.2 <br />2025 CAT LPG D-6 Finish Dozer Bulldozing Rubber Tired Dozers 0.75 lbs/hour 0.0 733.9 <br />2025-26 Large Dozer Bulldozing Rubber Tired Dozers 0.75 lbs/hour 0.0 660.5 <br />1,836 3,400 <br />0.92 1.70 <br />5.03 9.32 <br />Assumptions <br />Grams per pound 453.6 <br />Pounds per ton 2,000 <br />Work days per year 365 <br />Mean vehicle speed (S) 7.1 AP-42 Table 11.9-3 <br />Scraping Coefficient (SC)0.051 AP-42 Table 11.9-1 <br />Scraping Constant (Sa)2.00 AP-42 Table 11.9-1 <br />Scraping PM10 Scaling Factor (SF)0.6 AP-42 Table 11.9-1 <br />Scraping EF (lbs/VMT)SC*SSa*SF AP-42 Table 11.9-1 <br />Bulldozing Coefficient (BC)1.0 AP-42 Table 11.9-1 <br />Bulldozing Constant (Ba)1.5 AP-42 Table 11.9-1 <br />Bulldozing Constant (Bb)1.4 AP-42 Table 11.9-1 <br />Material Silt Content (s)6.9 AP-42 Table 11.9-3 <br />Material moisture content (M)7.9 AP-42 Table 11.9-4 <br />Bulldozing PM10 Scaling Factor (BF)0.75 AP-42 Table 11.9-1 <br />Bulldozing EF (lbs/hour)BC*sBa/MBb*BF AP-42 Table 11.9-1 <br />Dust Control Efficiency 61%Watering exposed area every three hours (WRAP Fugitive Dust Handbook, Table 6-7) <br />Abbreviations <br />EF = emission factor; lbs = pounds; VMT = vehicle mile travelled; PM10D = coarse particulate matter (dust) <br />Equation: <br />Scraping Emissions = VMT * Emission Factor * (1 - Dust Control Efficiency) <br />Bulldozing Emissions = Hours of Operation * Emission Factor * (1 - Dust Control Efficiency) <br />Emission Factor <br />ActivityProject Equipment <br />CalEEMod Equipment <br />Category <br />Controlled PM10D Emissions <br />(lbs per year) <br />Total emissions per Year (lbs) <br />Total emissions per Year (tons) <br />Annual Average emissions per Day (lbs) <br />Attachment A CAP Emission Calculations Page 12 of 30