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LSCOft-W%M3 i 4.5 AIR QUALITY s The project may result in local short-term and cumulative long-term air quality impacts. 1 ' Traffic and aggregate processing equipment operation is likely to generate ozone, NOx, and diesel fumes. Dust will be generated from excavation, hauling, and aggregate processing operations. The San Joaquin Valley Air Pollution Control. District has identified that the project will result in significant air quality impacts. Don Ballanti, Consulting Meteorologist, and PMC will prepare the air quality section. The steps in preparing the existing conditions analysis would be: Existing Setting • Prepare a description of the climate and meteorology of the project area and identify r climatic factors influencing air quality. j • .Survey project site and haul roads and identify all sensitive receptors for air pollutants in proximity to the project.site. • Identify existing mobile and non-mobile sources of air pollutants and odors within and adjacent to the project site. Quantify any existing emissions from current uses of the site. F,: Regulatory Framework Describe existing regulatory framework, including San Joaquin Valley Air Pollution Control District requirements, and the status of Federal and State air quality ,, standards and air quality plans. i F Impact Analysis FiAddress construction impacts and project (traffic and facility operation) impacts. Permanent impacts would be analyzed on two scales: the local scale and the regional scale. Local impact analysis tasks would include: • Prepare an analysis of project-related changes in emissions due to on-road vehicle use(employee vehicles, haul trucks) on a daily and annual basis. P, 0 Estimate emission from the processing area and asphalt batch plant based on the s equipment and processes involved and the maximum allowable throughput for each Fi. facility using EPA and/or SJVAPCD emission factors. li • Quantify emissions from proposed equipment and on-site vehicles on a daily and annual basis. This would be done separately for dry pit and wet pit operations. • Quantify fugitive emission from activities on site on a daily and annual basis. This would be done separately for dry pit and wet pit operation. • Evaluate the potential for dust nuisance considering local weather patterns, proximity to sensitive receptors and the generation of fugitive emissions. I • Evaluate the potential for exposure of sensitive receptors to diesel exhaust, which has been classified as a Toxic Air Contaminant. At the point of maximum impact, r � I San Joa ruin Counfy Community Development Da orhnent Firr k r