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Table 4.5-5: Projected Fugitive Dust(PM,,) Emissions <br /> From Mining And Reclamation Activities (Alternatives 1,2, and 3) <br /> PM,a EMISSIONS <br /> EMISSION SOURCE (Ibslday) <br /> Exposed Storage Piles' 86.6 <br /> Grading, Excavation and Mining Activities' 348.8 <br /> Exposed Graded Surface (Active and Inactive)s 528.0 <br /> Soil and Gravel Hauling on Paved Roadways4 1,500.0 <br /> Soil and Gravel Hauling on Unpaved Roadways' 621.0 <br /> TOTAL DAILY UNCONTROLLED EMISSIONS 3,083.4 <br /> TOTAL DAILY CONTROLLED EMISSIONS 6 1,541.7 <br /> SJVUAPCD Interim Threshold of Significance 82 <br /> Note: Emission estimates for Fugitive Dust(PM,,) are based on emission factors obtained from <br /> Sacramento Metropolitan AQMD, Air Quality Thresholds of Significance and the following <br /> assumptions: <br /> ' 1 acre of exposed storage pile; 85.6 lbs/acre/day. <br /> ' 2 heavy-duty vehicles (1 scraper and 1 loader)operating 8 hours/day; 21.8 lbs/hour/vehicle. <br /> 3 20 acres of exposed graded surface; 26.4 lbs/day. <br /> 4 35 miles/trip, 150 loads/day; 10.0 lbs/mile/day. <br /> 5 27 miles/day; 23.0 lbs/mile. <br /> 6 50%fugitive dust control efficiency based on the application of palliatives twice daily and material <br /> transport mitigation measures. <br /> Sources: SMAQMD 9995, EDAW 1997 <br /> Regional Mobile Source Emissions (ROG, NO., PM10, CO) <br /> Mobile source emissions refer to emissions from motor vehicle and equipment use, <br /> including tailpipe and evaporative emissions. Implementation of Alternatives 1, 2, and 3 � <br /> would generate mobile source emissions from three sources: mining and reclamation , <br /> equipment operation; heavy truck traffic to and from the processing plant; and employee ; <br /> trips to and from the project site. 1 <br /> Depending upon the pollutant, mobile source emissions may be of either regional or local <br /> concern. For example, NOX, ROG, SOX, and PM10 are all pollutants of regional concern, <br /> because they are readily transported by wind. NOX and ROG react with sunlight to form <br /> ozone or photochemical smog. However, because the entire Basin, including San Joaquin <br /> County, is in attainment with state and federal standards for SOX, this section focuses on <br /> mobile source emissions of NOX, CO, ROG, and PM10 (pollutants that contribute to non- <br /> attainment conditions in San Joaquin County). Although CO is considered in regional air <br /> quality attainment planning, it tends to disperse rapidly at the source and is typically <br /> analyzed as a localized pollutant (please refer to Impact 4.5-3 [Local Mobile Source { <br /> Impact].) <br /> Implementation of Alternatives 1, 2, and 3 would generate mobile source emissions <br /> associated with the mining and reclamation activities on the project site. Mining and <br /> Draft Environmental Impact Report 4-74 ER-96-3 <br />