Particulate pollution is primarily a problem in the winter, accumulating when stagnant weather comes to the Bay Area.
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Workshop on Proposed Amendments to Regulation 2: Permits to be Webcast live from 10:00am to 12:00pm on 2/22/2012. More Information: Workshop Notice (521 k PDF, 5 pgs) Rule Workshops
The Particulate Matter Workshop is available as a Webcast archive. Meeting Presentation: Reducing Particulate Matter in the SF Bay Area (4 MB PDF, 49 pgs) More Information: Particulate Matter Planning 12/14/2011 Board of Directors Special Meeting More Information: 12/14/2011 Agenda (545 k PDF, 23 pgs) Board Archives: Agendas, Minutes and Media
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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 (26 k PDF, 1 pg) - 2/28/2008 Policy: Emission Factors for Toxic Air Contaminants from Miscellaneous Natural Gas Combustion Sources (41 k PDF, 2 pgs) - 2/28/2008