News & Analysis as of

Air Pollution Permits National Ambient Air Quality Standards

Williams Mullen

Environmental Notes - April 2025

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Under the Clean Air Act, sources frequently must undergo “New Source Review” (NSR) permitting, which is a pre-construction permitting program. NSR establishes requirements for new or modified sources prior to initiating...more

Williams Mullen

Frequently Asked Air Questions (FAAQs): Synthetic Minor Permits, One-Time Doubling & Sham Permits

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Under the Clean Air Act, sources frequently must undergo “New Source Review” (NSR) permitting, which is a pre-construction permitting program. NSR establishes requirements for new or modified sources prior to initiating...more

McNees Wallace & Nurick LLC

EPA Significantly Lowers the National Ambient Air Quality Standard for Fine Particulate Matter

On Feb. 7, the U.S. Environmental Protection Agency published an update to the National Ambient Air Quality Standards (NAAQS) for fine particulate matter, commonly referred to as PM 2.5. The EPA announced that the annual...more

Bricker Graydon LLP

Sixth Circuit Ruling on Ohio’s Air Nuisance Rule

Bricker Graydon LLP on

On February 10, 2023, the Sixth Circuit issued an opinion in Sierra Club, et al. v. U.S. EPA, et al., (Case No. 21-3057). The case involved a petition for review filed by the Sierra Club, the Ohio Environmental Council, and...more

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

Reactivation/New Source Review: U.S. Environmental Protection Agency Determination That Refinery Must Obtain PSD Permit

The United States Environmental Protection Agency (“EPA”) stated in a November16th letter that an oil refinery on St. Croix in the U.S. Virgin Islands may not resume operations without going through New Source Review (“NSR”)....more

Williams Mullen

Top Five Potential Air Permitting Reforms: How Air Permitting in Virginia Is Poised for Change

Williams Mullen on

The Virginia State Air Pollution Control Board (Air Board) took its first measurable step toward a change in air permitting by creating a Subcommittee on Public Participation Processes (the Subcommittee) on June 21, 2019. The...more

(ACOEL) | American College of Environmental...

Determining Disparate Impacts in Environmental Justice Communities: Does Friends of Buckingham v. State Air Pollution Control...

It has long been recognized that minority and disadvantaged communities are subject to higher levels of pollution than more affluent non-minority areas. This fact is the basis of the need for Environmental Justice to ensure...more

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

U.S. EPA Environmental Appeals Board: Petition Filed Challenging Uintah County, Utah Natural Gas Compression Facilities' Clean Air...

WildEarth Guardians (“WildEarth”) filed a July 7th Petition for Review (“Petition”) before the United States Environmental Protection Agency (“EPA”) Environmental Appeals Board (“EAB”) challenging Clean Air Act permits for...more

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