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EPA tightens annual PM2.5 standard; stakeholders warned AQI will show more 'moderate' days

Tennessee Department of Health · March 7, 2024
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

An attendee summarized the Feb. 7 EPA final rule lowering the annual PM2.5 standard from 12 to 9 µg/m3 and explained that the change will shift Air Quality Index breakpoints so more days will register as 'moderate' without necessarily indicating worsened pollution.

A participant representing air-quality interests summarized a Feb. 7 final EPA rule that lowers the annual fine-particulate (PM2.5) standard from 12 micrograms per cubic meter to 9, saying the change tightens the annual standard and alters Air Quality Index (AQI) breakpoints.

The speaker explained the…

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