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Third ozone action day of season declared for Upper Green River Basin

Third ozone action day of season declared for Upper Green River Basin

Pinedale Gas Fields flare stacks

Flare stacks are shown in the Pinedale Anticline. Wyoming Department of Environmental Quality issued two ozone action days on Thursday and Friday.

The Wyoming Department of Environmental Quality declared another ozone action day for the Upper Green River Basin for both Thursday and Friday.

Regulators warned the weather conditions could generate high levels of ozone, an air pollutant that blossoms when sun reacts with emissions from industrial activities.

Emissions mixed with cold temperatures, a lack of wind and snow cover can concoct higher concentrations of ground-level ozone.

Regulators asked industry and residents to take steps to minimize emissions containing volatile organic compounds and nitrogen oxides.

Individuals can help keep precursor ozone emissions at bay by not idling vehicles or overfilling gas tanks. Companies must limit natural gas production or construction activities during the day.

Thursday’s announcement marked the third time this season Wyoming Department of Environmental Quality called for an ozone action day. The season typically runs from January until March.

The pollutant can cause lung damage or other health conditions. The state’s air quality specialists recommended individuals with chronic respiratory ailments or older adults and children “limit strenuous or extended outdoor activities, especially in the afternoon and evening.”

The state’s Air Quality Division provides updated information on its monitoring stations on its website:

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Energy and Natural Resources Reporter

Camille Erickson covers the state's energy industries. She received her master's degree at Northwestern University's Medill School of Journalism. Before moving to Casper in 2019, she reported on business and labor in Minneapolis, Chicago and Washington.

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