On the Spare the Air days, the Air District urges residents to cut back on any activity that causes pollution. People sensitive to pollution, such as children and the elderly, are cautioned to limit outdoor exposure
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5/15/2013 Board of Directors Special Budget Hearing
5/15/2013 Board of Directors Regular Meeting
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5/8/13 Advisory Council Meeting
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As part of the Engineering Evaluation Report that is prepared for each permit application, the permit engineer calculates emissions from the new and/or modified source(s). If available, the engineer may use emission factors for the source being evaluated. Emission factors generally are in the form of mass of pollutant per unit of throughput. One commonly used source of emission factors is the EPA publication, entitled Compilation of Air Pollutant Emission Factors, commonly referred to as AP-42.
The following policies and procedures provide emission factor information for certain sources or operations.
Policy: CARB Emission Factors for Diesel Engines - Percent HC in Relation to NMHC + NOx - 2/28/2008 Policy: Emission Factors for Toxic Air Contaminants from Miscellaneous Natural Gas Combustion Sources - 2/28/2008
For assistance in English, call (415) 749-4900.
Para asistencia en español, llame a al (415) 749-4900.