Category: Air Quality Planning

  • Utah Point Source Halogen Emissions

    HB 220 – Emissions Reduction Amendments, was passed during the 2023 Utah Legislature General Session. The legislation was subsequently signed into law by Governor Cox. The legislation’s applicability is limited to Box Elder, Davis, Salt Lake, Weber, Tooele and Utah counties and directs the Utah Division of Air Quality (DAQ) to: The legislation also directs…

  • Air Quality Modeling Program

    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…

  • Geographic Information Systems (GIS):
    Air Quality Modeling Program

    The 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…

  • Regional Scale Air Pollution Modeling:
    Air Quality Modeling Program

    What 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? How Are Air Pollution Models Used? Can We Believe The Model? DAQ’s Modeling Tools DAQ follows EPA guidelines and recommended models for all of…

  • County Smoking Vehicle Reporting Program Contacts:
    Mobile Sources and Transportation Program

    Forms

  • Exceptional Events Program

    Exceptional 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…

  • Fireworks:
    Exceptional Events Program

    The 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…

  • Documentation:
    Exceptional Events Program

    The following is a list of exceptional events documents that have been submitted to EPA since 2008. High Wind Events 2015 2010 2009 2008 Wildfire Events 2017 2015 2013 2012 2009 2008 Fireworks Events 2017 2014 2013 2012 2011 2010 2009 2008

  • Windblown Dust:
    Exceptional Events Program

    In 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…

  • Planning Branch:
    Division of Air Quality

    The 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: Emissions Inventories Emissions Inventories are routinely compiled to understand the origins…

  • Sections:
    State Implementation Plan (SIP)

    Foreword 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…

  • State Implementation Plan (SIP)

    Jump 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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