Noisy
← this week  ·  Subscribe →

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

Federal Register · October 23, 2025
The title they went with Air Plan Approval; Arizona; Interstate Transport Requirements for the 2012 Fine Particulate Matter National Ambient Air Quality Standard Noisy translates that to

Arizona can now claim its air pollution does not affect other states

What happened
US environmental regulators are proposing to approve Arizona's plan for fine particulate matter. This means Arizona can officially state its emissions do not significantly harm air quality in neighboring states.
Why it matters
The Clean Air Act requires states to prove their pollution does not drift across borders and cause problems for other states. This approval means Arizona has met that legal bar for a specific type of air pollution. It allows the state to move forward with its own development plans without facing federal challenges on this particular issue.
The signal
Watch for any legal challenges from neighboring states or environmental groups, which would indicate disagreement with the regulators' assessment.
If you insist
Read the original →