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Archive July 2025

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EPA Risks Triggering ‘Anti-Backsliding’ Mandate By Scrapping PM NAAQS

  • By: AWMA
  • On: 07/30/2025 09:56:41
  • In: Press
  • Comments: 0

July 21, 2025

In the News: As EPA develops a rule scrapping the Biden EPA’s tougher fine particulate matter (PM2.5) standard, one industry lawyer warns that waiting too long to issue that rule might trigger the Clean Air Act’s safeguards against “backsliding” in air quality, in an unprecedented situation, although Congress may intercede and change the law first.

Speaking during an Air and Waste Management Association (AWMA) event July 16, Lucinda Minton Langworthy, an attorney with Hunton Andrews Kurth, said she expects EPA to soon propose a rule reversing the Biden national ambient air quality standards (NAAQS) on legal grounds.

 

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Continued Advancements in Air Quality Modeling

EM - July 2025: This issue of EM highlights a few of the new and ongoing issues that are being addressed and that may result in new guidance or future changes to the Guideline on Air Quality Models.

 

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