Air quality in Utah

Air quality in Utah is often some of the worst in the United States.[1][2] Poor air quality in Utah is due to the mountainous topography which can cause pollutants to build up near the surface (especially during inversions[2]) combined with the prevalence of emissions from gasoline- and diesel-powered vehicles, especially older models.[3] Burning wood fuel for home heating can also contribute significantly to poor air quality. Homes heated with wood contribute about 3000 times the amount of pollution as homes heated with natural gas.[3] About 50% of air pollution in Salt Lake County is from vehicles.[4]

Winter inversion obscuring view of distant Provo Canyon. Pollutants lead to low contrast near the base of the mountains.

In 2017 the American Lung Association (ALA) ranked Salt Lake City-Provo-Orem area as the 14th worst city for ozone air quality in the U.S. and 8th for worst short-term particle pollution, just after Los Angeles. Logan was ranked the 11th worst city for short-term particle pollution.[5] Of the 12 counties with ozone data from 2014 to 2016, 7 received an “F” grade by the ALA, and 6 of 9 counties monitored received an “F” for particulate pollution.[6] An MIT study estimated that over 450 deaths annually in Utah are due to poor air quality.[7]

Utah has had mixed responses to poor air quality. For example, from 2015 to 2016 the state offered up to a $1500 credit for clean fuel vehicles[8] However, in 2019 Utah began imposing an additional registration fee on clean fuel vehicles that will increase to $120 annually by 2021.[9]

. . . Air quality in Utah . . .

Due to the mountainous terrain, and cold winters inversions frequently occur in Utah and throughout the Intermountain West. While inversions are a natural phenomenon, when coupled with community emissions from gasoline and diesel vehicles, wood fires, industry, and agriculture they can cause unnatural accumulations of hazardous pollutants (especially PM2.5).[10][11][12] A typical winter in Salt Lake City has about 6 multi-day inversions that lead to about 18 days of pollution above National Ambient Air Quality Standards.[11][12] Pollution for inversions can begin to build-up even when the air is clear.[10]

To improve air quality, especially during inversions, there are restrictions on burning wood fires with fines starting at $150 for first-time offenses in Salt Lake County.[13] Emissions can be reduced by using gasoline and diesel vehicles less by more carpooling and taking public transit, less idling, use of newer vehicles (especially clean fuel vehicles), and combining trips.[13][14] Less use of gas-powered snow blowers, fireworks, gas-powered lawnmowers, and materials with high volatile organic compound emissions such as certain paints can help keep air clean throughout the year.

This diesel-powered truck emits an exhaust gas rich in black particulate matter when starting its engine. Mobile sources, including both gasoline and diesel vehicles, are one of the leading contributors to poor air quality in Utah. Most hazardous mobile emissions are not as visible as in this picture.

. . . Air quality in Utah . . .

This article is issued from web site Wikipedia. The original article may be a bit shortened or modified. Some links may have been modified. The text is licensed under “Creative Commons – Attribution – Sharealike” [1] and some of the text can also be licensed under the terms of the “GNU Free Documentation License” [2]. Additional terms may apply for the media files. By using this site, you agree to our Legal pages . Web links: [1] [2]

. . . Air quality in Utah . . .

© 2022 The Grey Earl INFO - WordPress Theme by WPEnjoy