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AUGUSTIN BERNAL MOUNTAIN BIKE TRAIL PROJECT DRAFT INITIAL STUDY <br /> Table 3.3-1.Air Quality Thresholds of Significance <br /> Construction <br /> Thresholds Operational Thresholds <br /> Average Daily Average Daily Emissions Maximum Annual <br /> Pollutant Emissions lbs da (IWday) Emissions tons ear <br /> Risks and Hazards Compliance with Qualified Community Risk Reduction Plan <br /> (Individual Project) or <br /> Increased cancer risk of>10.0 in 1 million <br /> Increased noncancer risk of>1.0 Hazard Index(chronic or acute) <br /> Ambient PM2.5 increase >0.3 pg/m3 annual average <br /> Zone of Influence: 1,000-foot radius from property line of source or receptor <br /> Risks and Hazards Compliance with Qualified Community Risk Reduction Plan <br /> (Cumulative) or <br /> Cancer risk of>100 in 1 million (from all local sources) <br /> Noncancer risk of>10.0 Hazard Index(chronic,from all local sources) <br /> Ambient PM2.5>0.8 pg/m3 annual average(from all local sources) <br /> Zone of Influence: 1,000-foot radius from property line of source or receptor <br /> Accidental Release of None Storage or use of acutely hazardous material located <br /> Acutely Hazardous Air near receptors or new receptors located near stored <br /> Pollutants or used acutely hazardous materials considered <br /> significant <br /> Odors None Five confirmed complaints to NSCAPCD per year <br /> averaged over 3 years <br /> Source:BAAQMD 2017a <br /> Notes:lbs/day=pounds per day;tons/year=tons per year;ppm=parts per million;µg/m3=micrograms per cubic meter;ROG <br /> = reactive organic gases; N0, = oxides of nitrogen; PMio= particulate matter with an aerodynamic resistance diameter of 10 <br /> micrometers or less;PM2.5=fine particulate matter with an aerodynamic resistance diameter of 2.5 micrometers or less; CO= <br /> carbon monoxide. <br /> In general,the BAAQMD significance thresholds for reactive organic gases(ROG),oxides of nitrogen (NOX), <br /> particulate matter with an aerodynamic resistance diameter of 10 micrometers or less (PMio), particulate <br /> matter with an aerodynamic resistance diameter of 2.5 micrometers or less(PM2.5),and carbon monoxide(CO) <br /> address the first three air quality significance criteria listed above. The BAAQMD maintains that these <br /> thresholds are intended to maintain ambient air quality concentrations ofthese criteria air pollutants below <br /> state and federal standards and to prevent a cumulatively considerable contribution to regional <br /> nonattainment with ambient air quality standards. The TAC thresholds (cancer and noncancer risks) and <br /> local CO thresholds address the third significance criterion, and the BAAQMD odors threshold addresses <br /> the fourth significance criterion. <br /> Impact Discussion <br /> a) Would the project conflict with or obstruct implementation of the applicable air quality plan? <br /> An area is designated as "in attainment" when it is in compliance with the federal and/or State <br /> standards. These standards are set by the U.S. Environmental Protection Agency or California Air <br /> Resources Board(CARB)for the maximum level of a given air pollutant that can exist in the outdoor air <br /> without unacceptable effects on human health or public welfare with a margin of safety.The project site <br /> is located within the SFBAAB,which is designated non-attainment for the federal 8-hour ozone(03)and <br /> 12956 <br /> DUDEK 21 April 2022 <br />