News & Analysis as of

Air Quality Standards Public Comment Clean Air Act

Williams Mullen

Exceptional Events Part of North Carolina Particulate Air Quality Attainment Designation

Williams Mullen on

Effective May 2024, EPA tightened the annual health-based National Ambient Air Quality  Standard (NAAQS) for fine particulate matter (PM2.5) from 12.0 µg/m3 to 9.0 µg/m3. This change was made after a review of the available...more

Nossaman LLP

Supreme Court Clarifies Requirement for Agencies to Respond to Public Comments on Proposed Rulemakings

Nossaman LLP on

The week of June 23, 2024, in Ohio v. Environmental Protection Agency, the U.S. Supreme Court clarified in a 5-4 decision that if a federal agency fails to provide a reasoned response to comments raised during the rulemaking...more

Snell & Wilmer

Breaking News of a Particulate Matter Regarding Air Quality

Snell & Wilmer on

The U.S. Environmental Protection Agency (“USEPA”) announced yesterday that it is proposing to retain the current National Ambient Air Quality Standards (“NAAQS”) for fine particulate matter (“PM2.5?) and course particulate...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Regional Haze/Arkansas: U.S. Environmental Protection Agency Announces Approval of Five-Year Progress Report

The United States Environmental Protection Agency (“EPA”) published a final rule in the October 1st Federal Register approving the State of Arkansas’s Regional Haze Five-Year Progress Report. See 84 Fed. Reg. 51986. EPA...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Arkansas Department of Environmental Quality 2017 Annual Monitoring Network Plan (Air): October 3rd U.S. Environmental Protection...

The United States Environmental Protection Agency (“EPA”) sent an October 3rd letter to Arkansas Department of Environmental Quality (“ADEQ”) Associate Director, Office of Air Quality, Stuart Spencer approving the agency’s...more

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