Tag: Ozone

  • Uinta Basin Ozone

    The Uinta Basin lies in the northeast corner of Utah and is bounded on the north by the Uinta Mountains, on the south by the Tavaputs Plateau, on the west by the Wasatch Range, and on the east by elevated terrain that separates it from Piceance Basin in Colorado. Duchesne and Uintah Counties occupy most…

  • Northern Wasatch Front Moderate Ozone SIP TechnicalSupport Documentation

    Utah Division of Air Quality (UDAQ) developed and submitted to EPA for review the Northern Wasatch Front (NWF) Moderate State Implementation Plan (SIP) for the 2015 8-hour ozone National Ambient Air Quality Standard. The following tabs contain the technical support documentation (TSD) pertaining to the development of the SIP and associated administrative rules. These are…

  • Northern Wasatch Front Ozone Nonattainment Area

    This page contains information about summertime ozone in the Northern Wasatch Front nonattainment area and an interactive emission inventory for the area. You can use thisInteractive Inventory to explore and learn about different emission sectors and sources (SCCs) within the Northern Wasatch Front, and where the emissions originate that drive the local ozone formation. What…

  • RACT (Reasonably Available Control Technology) Process Ozone SIP

    Utah’s Division of Air Quality examines and requires the implementation of appropriate controls at major point sources of pollution to reduce ozone forming emissions of NOx and VOCs using a Reasonable Available Control Technologies (RACT) approach, as required by the Clean Air Act. This page provides an overview of how this process works. RACT Overview…

  • Reasonably Available Control Measures (RACM) Process Ozone SIP

    Utah’s Division of Air Quality examines and develops administrative rules to reduce ozone forming emissions of NOx and VOCs using a Reasonably Available Control Measures (RACM) approach, as required by the Clean Air Act. This page provides an overview of how this approach works and what emission reduction rules the state has already adopted. RACM…

  • What is Ozone?

    Ozone is a highly reactive gas that when inhaled can cause burning and irritation of the lining of the lungs. This is particularly harmful to individuals with breathing problems like asthma, as well as for people who work outside when ozone levels are high.  Ozone is not directly emitted by human activities, but is formed…

  • Check Daily Air Quality Forecast to Plan Ahead & Protect Health

    Utah DEQ provides air-quality forecasting throughout the summer through its UtahAir app, website, and regular email updates.

  • Great Salt Lake Summer Ozone Study

    The Utah Division of Air Quality (DAQ) monitoring found high levels of ozone near the Great Salt Lake from 2010-2013. The Division also found a wide variance in the concentration of ozone in the stable air pocket over the lake during the summertime. Though the mechanisms behind air flow in lake and coastal regions have…

  • Chemical Mechanisms at Low Temperatures in the Uinta Basin

    Wintertime ozone in the Uinta Basin is unique and requires improvements to the photochemical models used for winter conditions. Current chemical mechanisms within the modeling system assume a summertime temperature of 300 K (80° F) when performing important chemical reactions, far different from the wintertime temperatures in the Basin. In order to properly model the…

  • CAMx Snow Cover Treatment

    Wintertime ozone is a serious air quality issue in Utah’s Uinta Basin. The situation is unique and requires improvements to photochemical models, such as the Comprehensive Air Quality Model with Extensions (CAMx) used by Utah’s Division of Air Quality, to simulate wintertime ozone. High concentrations of wintertime ozone occur over snow-covered surfaces. Snow cover influences…

  • DEQ Forecasters Keep Their Eyes on the Sky during Ozone Season

    By Kimberly Kreykes Like many people, my day starts with the weather forecast. Not just because it is my passion, but because it is my responsibility to stay informed — I am the lead air-quality forecaster for the Utah Department of Environmental Quality’s (DEQ’s) Division of Air Quality (DAQ). Along with two other DAQ forecasters,…

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