News & Analysis as of

Air Pollution PSD

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

Williams Mullen on

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

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

Title V/Clean Air Act: Petition to Object Filed Addressing Scotia, California Biomass Facility

The Environmental Protection Information Center and Humboldt Coalition for Clean Energy (collectively, “EPIC”) filed a January 3rd Title V Petition to Object (“Petition”) before the United States Environmental Protection...more

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

PSD/Clean Air Act: Federal Appellate Court Certifies Texas Commission on Environmental Quality/BACT Question

The United States Court of Appeals, Fifth Circuit (“Fifth Circuit”) in a February 16th Order considered the Port Arthur Community Action Network (“PACAN”) Petition for a review of a decision by the Texas Commission on...more

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

Fugitive Emissions/Clean Air Act: U.S. Environmental Protection Agency Proposed Rule Addressing New Source Review Regulations

The United States Environmental Protection Agency (“EPA”) is proposing revisions to the Clean Air Act’s New Source Review (“NSR”) permitting regulations. The proposed rule would require that owners and operators of...more

Foley Hoag LLP - Environmental Law

Injunctive Relief Is Available Outside the Fenceline

On Monday, District Judge Rodney Sippel ordered sweeping injunctive relief against Ameren Missouri, intended to remedy violations of PSD requirements he had previously identified resulting from upgrades to the Ameren Missouri...more

Burr & Forman

EPA Permitting Regulations Vacated—Project Delays Expected

Burr & Forman on

The recent decision in Sierra Club v. EPA, 705 F.3d 458 (D.C. Cir. 2013) vacated all of EPA’s rules on Significant Monitoring Concentrations (“SMCs”), as well as some (the Prevention of Significant Deterioration (“PSD”)...more

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