SU0007861 - Laserfiche WebLink

Home Browse Search

Draft Environmental Impact Report Page IV.D-1 Forward Landfill Expansion D. AIR QUALITY/ODOR/ CLIMATE CHANGE/HUMAN HEALTH RISK This chapter provides an overview of existing air quality conditions both within the vicinity of the Forward Landfill and its surrounding region, the associated regulatory framework, and an analysis of potential air quality impacts that would result from implementation of the proposed project. This chapter also evaluates the potential impacts of the proposed project on regional and local air quality,including temporary impacts due to construction of project components and long-term impacts due to operations. The air quality analysis evaluated criteria air pollutant and hazardous air pollutant emissions for the Forward Landfill under three scenarios, including two pre-Project or Baseline scenarios as well as the post-Project scenario. The two Baseline scenarios are: Current Actual emissions, determined using 2006 and 2007 operational data;and Current Permitted emissions,based on emissions of landfill sources at maximum permitted levels. The Post-Project or Future Potential scenario was estimated assuming full implementation of the Project. The hazardous air pollutants were evaluated in a health risk assessment (HRA). Lastly, an assessment of greenhouse gas (GHG) emissions was also conducted. Air quality issues are addressed through the efforts of various Federal,State, regional, and local government agencies. These agencies work jointly and individually to improve air quality through legislation, regulation, planning, policy-making, education, and a variety of context for air quality specialized programs designed to improve air quality. The regulatory q Y is also described in this chapter. The air quality analysis and HRA were conducted in accordance with published guidance, including the San Joaquin Valley Air Pollution Control District's(SJVAPCD) Guide to Accessing and Mitigating Air Quality Impacts and Guidance for Air Dispersion Modeling, and the Office of Environmental Health and Hazard Assessment's (OEHHA)Air Toxics Hot Spots Program Risk Assessment Guidelines. This chapter summarizes the air quality impact analysis conducted by SCS Engineers', which is available for review at the San Joaquin County Community Development Department. That analysis provides additional information regarding the assumptions and methodologies used in the air emission calculations and related health risk assessment. Settin Topography/Meteorology/Climate Primary factors influencing air quality are the locations of air pollutant sources and the amounts of pollutants emitted. Meteorological and topographic conditions determine the movement and dispersal of criteria air pollutants and include factors such as wind speed and direction, as well as interaction between air temperature gradients and physical landscape features. ' SCS Engineers, Air Quality Impact Analysis and Air Toxics Risk Assessment for Proposed Landfill Project Forward Landfill Manteca,California,June 2009. 2"Criteria" air pollutants are defined as those for which the U.S.Environmental Protection Agency(EPA) has et and National Ambient Air Quality Standards (NAAQS) under the Federal Clean Air Act (CAA), de Ozone (03), Nitrogen Dioxide (NO), Sulfur Dioxide (SO2), Lead (Pb), Carbon Monoxide (CO), Particulate Matter with mean aerodynamic particle diameters of to micrometers or less (PMI) and Particulate Matter with possessing mean aerodynamic particle diameters of 2.5 micrometers or less(PM,.,).