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The world is being quietly rearranged by people who write very long documents.

Federal Register · April 4, 2025
The title they went with Air Plan Approval; District of Columbia, Maryland, Virginia; Determination of Attainment by the Attainment Date and Clean Data Determination for the Washington, DC-MD-VA Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards Noisy translates that to

Washington DC area no longer has to prove its air is clean

What happened
US environmental regulators say the Washington DC area has met its clean air goals for ozone pollution. This means local governments no longer have to submit plans to reduce ozone.
Why it matters
For years, the Washington DC area has been under special rules to clean up its air. These rules forced local governments to keep submitting plans and proving they were making progress. Now, those requirements are suspended, which means less pressure on local officials to implement new pollution controls or report on existing ones.
The signal
Watch whether local governments in the Washington DC area slow down or stop new air quality initiatives, now that the federal mandate is lifted.
If you insist
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