Air Plan Approval; Missouri; Clean Data Determination for the 2015 8-Hour Ozone Standard for the Missouri Portion of the St. Louis Nonattainment Area
What happened
The Environmental Protection Agency (EPA) determined that the Missouri portion of the St. Louis nonattainment area achieved clean data for the 2015 8-hour ozone National Ambient Air Quality Standard (NAAQS). This determination, signed by Donald Trump, is based on air monitoring data from 2023-2025. The EPA also approved Missouri's request for this clean data determination, suspending certain planning requirements for Missouri as long as the area continues to meet the standard.
Why it matters
This means the Missouri portion of the St. Louis area has met federal air quality standards for ozone. It reduces planning obligations for the State of Missouri related to improving air quality, as long as the area maintains these clean air levels.
Who it affects
- ›Residents of the Missouri portion of the St. Louis area
- ›State of Missouri government
- ›Missouri Department of Natural Resources (MoDNR)
- ›Environmental Protection Agency (EPA)
The receipts are official. The summary is ours.
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