4A Public Hearing 2015 0120 - Laserfiche WebLink

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City of San Leandro Housing Element Update (2015-2023) Project Initial Studv and Environmental Checklist Therefore, implementation of the proposed Housing Element would have less than significant impacts associat- ed with contributing substantially to an existing or projected air quality violation, increasing criteria pollutants during construction or operational activities, and exposing sensitive receptors to substantial pollutant concen- trations. Also see Section III.a above. c) Would the project result in a cumulafiveyconsiderable net increase of any criteria pollutant for which thejbriect area is in non -attainment under applicable federal or State ambient air quality standards (including releasing emissions which exceed quantitative thresholds for o.Zone precursors)? BAAQMD monitors air quality at several locations in the San Francisco Bay Air Basin. Historically, problem- atic criteria pollutants in urbanized areas include ozone, particulate matter, and carbon monoxide. Combus- tion of fuels and motor vehicle emissions are a major source of each of these three criteria pollutants. San Leandro is within the San Francisco Bay Area Air Ozone non -attainment area as delineated by the USEPA. The 2010 Bay Area Clean Air Plan is the current control strategy to reduce ozone, particulate matter (PM), air toxins, and greenhouse gases (GHGs) for the City of San Leandro. The 2010 Bay Area Clean Air Plan was based on the ABAG population and employment projections for the San Francisco Bay Area, including growth that would be accommodated under the City's General Plan. As discussed in Section III.a and III.b above, potential future development that could occur under the pro- posed Project would not increase development potential in San Leandro beyond what is already anticipated in the 2010 Bay Area Clean Air Plan, and local and regional regulations would minimize pollutant emissions in- creases. Therefore, increases of criteria air pollutants that may occur as a result of potential future develop- ment that could occur under the proposed Project would be less than significant. d) lFlould the project expose sensitive receptors to substantial pollutant concentrations? Residential development in proximity to 1-580,1-880, and Highway 238 could expose sensitive receptors to human health risks associated with toxic air contaminants (TACs). Concentrations of TACs such as diesel particulate matter are much higher near heavily -traveled highways and intersections, and prolonged exposure can cause health risks such as cancer, birth defects, and neurological damage. Potential future development that could occur under the proposed Project would not increase development potential, but rather would al- low for housing units in Residential zoning districts where residential uses currently exist and are accounted for in the General Plan. Residential zoning districts are located throughout the city and in some cases are near major thoroughfares. While no projects have been identified or are proposed as part of the proposed Project, potential future development that could occur under the proposed Project within 1,000 feet of major sources of TACs would be required to submit a Health Risk Assessment (HRA) prepared in accordance with the lat- est State Office of Environmental Health Hazard Assessment (OEHHA) and BAAQMD guidance. For pro- jects where the incremental cancer risk exceeds ten in one million, PM2.5 concentrations exceed 0.3 µg/m3, or the appropriate non -cancer hazard index exceeds 1.0, the HRA would be required to identify appropriate ac- tions to reduce potential cancer and non -cancer risks to acceptable levels per OEHHA and BAAQMD guid- ance, such as the installation of Minimum Efficiency Rating Value (MERV) filters into the heating, ventila- tion, and air conditioning (HVAC) system of residences and locating air intakes away from emission sources. Compliance with these mandatory regulations would ensure impacts would be less than significant. Page 119