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4.5 AIR QUALITY <br /> • limit the speed of all haul trucks to 15 miles per hour while on the graveled haul road; <br /> • materials transported by truck will be covered or wetted down to control dust along the haul route; <br /> and <br /> • all disturbed but inactive portions of the site will be watered with an appropriate dust suppressant, <br /> covered or seeded. <br /> Impact <br /> 4.5-2 The completed project would increase regional emissions of pollutants through new <br /> vehicle travel and area-source emissions associated with residences. <br /> Vehicle trips to and from the project would result in air pollutant emissions over a large area. To <br /> estimate the emissions associated with the proposed project the URBEMIS-3 computer program, <br /> developed by the California Air Resources Board, was applied to project land uses. The resulting daily <br /> emissions are shown in Table 4.5-4. <br /> TABLE 4.5-4 <br /> WORST-CASE PROJECT OPERATIONAL EMISSIONS <br /> POUNDS/DAY <br /> Source ROG NOX CO PM-10 SOX <br /> Vehicles 4.4 8.5 46.4 0.9 1.1 <br /> Residential Sources 3.1 0.6 1.8 0.2 0.1 <br /> Total 7.5 9.1 48.2 1.1 1.2 <br /> SJVAPCD-SJU Threshold 150 150 550 80 150 <br /> ROG = Reactive Organic Gases <br /> NOX = Nitrogen Oxides <br /> CO = Carbon Monoxide <br /> PM-10 = Particulate Matter, 10 Micron <br /> SOX = Sulfur Oxides <br /> Daily emissions associated with proposed residential uses were also estimated and are shown in Table <br /> 4.5-4. Residential uses contain a number of dispersed and intermittent sources of pollutants such as space <br /> and water heaters, household paints and solvents, fireplaces and woodstoves, lawn mowers and other <br /> 4.5-9 <br />