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4 ENVIRONMENTAL ANALYSIS <br /> 4.6 AIR QUALITY <br /> TABLE 4.6-4B <br /> OPERATIONAL ENUSSIONS(TONS PER YEAR)* <br /> Estimated Project Estimated <br /> r, Valley Air On-site Emissions Project <br /> District Processing (On-site Emissions <br /> Year Pollutant Thresholds Equipment Equipment) (haul Trucks) Total <br /> aw 2007 ROG 10 1.64 1.07 3.35 6.06 <br /> NOX 10 44.2 21.3 40.0 106 <br /> PM10 - 247 1.36 1.18 250 <br /> 2021 ROG 10 1.64 0.79 1.00 3.43 <br /> NOX 10 44.2 11.9 7.62 63.7 <br /> PM10 - 247 1.24 0.54 249 <br /> Source: Environmental Science Associates,2004. <br /> ` Production level of 2.85 million. <br /> TABLE 4.64C <br /> OPERATIONAL EMISSIONS(TONS PER YEAR)* <br /> Estimated Project Estimated <br /> Valley Air On-site Emissions Project <br /> District Processing (On-site Emissions <br /> Year Pollutant Thresholds Equipment Equipment) (Haul Trucks) Total <br /> 2007 ROG 10 1.64 0.64 2.00 4.28 <br /> NOX 10 26.4 12.7 23.9 63 <br /> PM10 - 168 0.81 0.70 170 <br /> v <br /> 2021 ROG 10 1.64 0.47 0.60 2.71 <br /> NOX 10 26.4 7.12 4.55 38.1 <br /> PM10 - 168 0.74 0.32 169 <br /> Source: Environmental Science Associates,2004. <br /> Production level of 1.7 million. <br /> v <br /> Projected decreases in ROG and NOX while comparing 2007 and 2021 are the result of future <br /> decreases in emission factors for project equipment and mobile sources,due to typical <br /> replacement cycles of older equipment,and implementation of the U.S. EPA's HD 2007 program. <br /> Recently proposed emission standards for nonroad diesel engines would have even greater <br /> benefits towards decreasing emissions(although not accounted for in this analysis). <br /> RMC Pacific Vemalis Quarry Mining and Reclamation Project 4.6-23 ESA/703015 <br /> Administrative Draft E0t March 2004 <br />