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POTENTIALLY POTENTIALLY SIGNIFICANT LESS THAN NO ISSUES SIGNIFICANT UNLESS SIGNIFICANT IMPACT SOURCES ISSUES MITIGATION IMPACT INCORPORATED Air Quality (Continued) Quality Guidelines to assist lead agencies in evaluating air quality impacts of projects and plans in the San Francisco Bay Area Air Basin ( SFBAAB). The SFBAAB is currently designated as a non - attainment area for state and national ozone standards and national particulate matter ambient air quality standards largely attributed to the region's development history. b) Air pollution is largely a cumulative impact, as past, present and future development projects contribute to the region's adverse air quality. Although no single development project is sufficient in size to result in non - attainment of ambient air quality standards, a project's individual emissions contribute to existing, cumulatively significant adverse air quality impacts. If a project's contribution to the cumulative impact for criteria pollutants is considerable, then the project's impact on air quality would be considered a significant impact. In developing thresholds of significance for air pollutants, BAAQMD considered the emission levels for which a project's individual emissions would be cumulatively considerable (BAAQMD, June 2010). c) The State of California is concerned about GHG emissions and their effect on global climate change. Extensive research on the effect of human activity on global climate continues to occur. Many studies have identified the link between emissions of GHG and rising global temperatures, with recent evidence presented by the United Nations Intergovernmental Panel on Climate Change (IPCC) in 2007 that finds overwhelming evidence that human activity is causing global warming. Impacts to California from this climate change could be reduced snow pack, increased risk of wildfires, increased flooding potential, and reductions in the quality and quantity of agricultural products. The Bay Area Air Quality Management District (BAAQMD) adopted thresholds that establish a significance threshold of 1,100 MT of CO2elyear. The proposed project was evaluated utilizing the BAAQMD's June 2010 project -level CEQA guidelines for criteria pollutants and Greenhouse Gas Emissions (GHGs). Similar to regulated air pollutants, GHG emissions and global climate change also represent cumulative impacts. GHG emissions contribute, on a cumulative basis, to the significant adverse environmental impacts of global climate change. No single project could generate enough GHG emissions to noticeably change the global average temperature, however, the combination of GHG emissions from past, present and future projects contribute substantially to the phenomenon of global climate change and its associated environmental impacts. Utilizing the URBEMIS 2007 computer model provided on the BAAQMD's website, the proposed project was evaluated for its project -level contributions to regional criteria air pollutants and precursors (ROG, NOx, PM10, PM25 and CO). Those results were then run through the BAAQMD Greenhouse Gas Model to quantify GHG emissions from the proposed project. That analysis determined that the proposed project would generate 1,047.55 metric tons (MT) of CO2e /year which is below the 1,100 MT CO2elyear threshold of significance for project - Ievel impacts. Therefore, the proposed project is consistent with the implementing programs and regulations to achieve the statewide GHG emission reduction goals established under AB 32, the State's Global Warming Solutions Act. The proposed project will not create significant air quality impacts, and no mitigation is required. d -e) During the construction phase of the project, as demolition and construction activities occur, there will be a temporary emission of particulate matter and construction equipment exhausts. This temporary situation could create odors that may disturb sensitive receptors near the project area, such as existing residential uses, schools and hospitals in the project vicinity. For example, San Leandro Hospital is Iocated 1,129 feet to the east, McKinley Elementary School is located 1,998 feet to the north and San Leandro High is located 2,222 feet northeast of the project site. Construction -level air - quality impacts are associated with the existence of asbestos - containing materials that were identified during.an asbestos survey conducted on site. Mitigation measures to reduce construction -phase impacts have been developed by regulatory agencies and site- specific measures were included as part of the Phase I Environmental Site Assessment to reduce air quality impacts, as follows: 2450 Washington Avenue Apartments 5 October 2011