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Earth Moving PM2.5 Dust Emissions <br />EF Unit Existing Project <br />02-035 623 Scraper Grading Scrapers 0.17 lbs/VMT 3.5 4.1 <br />04-971 JD Grader Grading Graders 0.17 lbs/VMT 0.3 0.9 <br />2025-26 CAT 623 Scraper Grading Scrapers 0.17 lbs/VMT 0.00 5.6 <br />04-075 JD 850C Dozer Bulldozing Rubber Tired Dozers 0.41 lbs/hour 117.48 125.9 <br />10-020 CAT D8 Dozer Bulldozing Rubber Tired Dozers 0.41 lbs/hour 352.44 369.2 <br />18-075 JD 850K Dozer Bulldozing Rubber Tired Dozers 0.41 lbs/hour 184.61 201.4 <br />20-020 JD 1050K LARGE DOZER Bulldozing Rubber Tired Dozers 0.41 lbs/hour 335.66 352.4 <br />2025 CAT LPG D-6 Finish Dozer Bulldozing Rubber Tired Dozers 0.41 lbs/hour 0.00 403.4 <br />2025-26 Large Dozer Bulldozing Rubber Tired Dozers 0.41 lbs/hour 0.00 363.1 <br />994 1,826 <br />0.50 0.91 <br />2.72 5.00 <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)0.04 AP-42 Table 11.9-1 <br />Scraping Constant (Sa)2.5 AP-42 Table 11.9-1 <br />Scraping PM2.5 Scaling Factor (SF)0.031 AP-42 Table 11.9-1 <br />Scraping EF (lbs/VMT)SC*SSa*SF AP-42 Table 11.9-1 <br />Bulldozing Coefficient (BC)5.7 AP-42 Table 11.9-1 <br />Bulldozing Constant (Ba)1.2 AP-42 Table 11.9-1 <br />Bulldozing Constant (Bb)1.3 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 PM2.5 Scaling Factor (BF)0.11 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; PM2.5D = fine 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 />Total emissions per Year (lbs) <br />Total emissions per Year (tons) <br />Annual Average emissions per Day (lbs) <br />Controlled PM2.5D Emissions <br />Project Equipment Activity <br />CalEEMod Equipment <br />Category <br />Emission Factor <br />Attachment A CAP Emission Calculations Page 13 of 30