Why Do We Need Models? The Division of Air Quality regularly measures the concentration of specific air pollutants at selected monitoring locations. However, the Division also needs the ability to make future projections of air pollution levels. Computer models are a relatively inexpensive and expedient means of providing this air quality information. For example, models …
Read MoreThe Division has used Geographic Information Systems (GIS) for air quality modeling studies since 1993 by creating its own database of relevant spatial layers. This data helps in the creation of emission inventories for ozone and fine particulate modeling. This is done through the creation of demographic surrogates so that county-wide emissions can be further …
Read MoreWhat Is An Air Pollution Model? A computer model simulates the meteorological conditions and chemical reactions that chemical govern air pollution formation and transport. Why Do We Need Air Pollution Models? Pollution is formed when gaseous emissions from cars, industry, and residential sources react in the air to form particulate pollution in the winter and …
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Read MoreExceptional events are unusual or naturally occurring events that can affect air quality but are not reasonably controllable using techniques tribal, state or local air agencies may implement in order to attain and maintain the National Ambient Air Quality Standards. Exceptional events are events for which the normal planning and regulatory process established by the …
Read MoreThe Division on Air Quality would like to help Utah residents celebrate safely by reminding everyone of the potential for high concentrations of smoke associated with fireworks displays. This smoke is largely particulate matter (PM). In prior years, DAQ has monitored extremely high concentrations of both PM10 and PM2.5 (the fine and the very fine …
Read MoreJump to: High Wind Wildfire Fireworks The following is a list of exceptional events documents that have been submitted to EPA since 2008. High Wind Events 2015 April 14, 2015 2010 April 27, 2010 March 30, 2010 2009 March 4, 2009 2008 May 20, 2008 April 29, 2008 April 19, 2008 April 15, 2008 EPA …
Read MoreIn dry areas like Utah, windblown dust maybe a significant air pollution problem. From spring through fall, unusually high winds can combine with dry surface conditions to result in dust storms. These dust storms can lead to extremely high levels of particulate matter in the air. Much of this PM is small enough to be …
Read MoreThe Planning Branch is responsible for developing comprehensive plans (also known as State Implementation Plans (SIPs)) to reduce air pollution, and developing rules that set requirements on air emissions for both individuals and industry in Utah. The planning Branch is composed of three sections: SIP/Rules Technical Analysis Emissions Inventories Emissions Inventories are routinely compiled to …
Read MoreForeword Section I: Legal Authority Section II: Review of New and Modified Air Pollution Sources Section III: Source Surveillance Section IV: Ambient Air Monitoring Program Section V: Resources Section VI: Intergovernmental Cooperation Section VII: Prevention of Air Pollution Emergency Episodes Section VIII: Prevention of Significant Deterioration This section includes plans for all pollutants for which …
Read MoreJump to: Nonattainment and Maintenance Area information Foreword SIP Foundation Sections Introduction To protect public health, the Clean Air Act (42 U.S.C Section 7401) requires that federal standards be set to limit the maximum levels of pollutants in the outdoor air. Each state is responsible for developing plans to demonstrate how those standards will be …
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Executive Director’s Office