News & Analysis as of

Statutory Interpretation Permits Clean Air Act

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

New Source Review/Clean Air Act: U.S. Environmental Protection Agency Guidance Addressing "Begin Actual Construction"

The United States Environmental Protection Agency (“EPA”) issued a September 2nd interpretive letter addressing the definition of “Begin Actual Construction” in the Clean Air Act New Source Review (“NSR”) regulations....more

Snell & Wilmer

Title V Emergency Affirmative Defense Provision Reinstated by DC Circuit Court

Snell & Wilmer on

The DC Circuit Court of Appeals decided on September 5, 2025, that the U.S. Environmental Protection Agency (EPA) erred in implementing its 2023 Final Rule on “Removal of Title V Emergency Affirmative Defense Provisions From...more

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

Startup/Shutdown/Malfunction/Clean Air Act: Federal Appellate Court Upholds Title V Affirmative Defense

The United States Court of Appeals District of Columbia Circuit (“Court”) addressed in a September 5th Opinion the validity of the Clean Air Act Startup/Shutdown/Malfunction (“SSM”) affirmative defense. See SSM Litigation...more

Womble Bond Dickinson

Emergency Affirmative Defense for Title V Emissions Exceedances is Back

Womble Bond Dickinson on

On Friday, the D.C. Circuit reinstated the affirmative defense for emergency situations resulting in exceedances of emission limitations in Clean Air Act Title V operating permits. That defense, available in the Title V...more

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

Liquid Natural Gas Plant/Clean Air Act: Fifth Circuit Court of Appeals Addresses Challenge to Texas Commission on Environmental...

The United States Court of Appeals for the Fifth Circuit (“Fifth Circuit”) addressed in an August 12th Decision a challenge to a Clean Air Act Prevention of Significant Deterioration (“PSD”) Permit issued by the Texas...more

ArentFox Schiff

Top 3 Supreme Court Environmental and Administrative Trends of 2025

ArentFox Schiff on

Within this term, the US Supreme Court’s major environmental and administrative focus was on statutory text in its environmental and administrative decisions....more

(ACOEL) | American College of Environmental...

Port Arthur Community Action Network (PACAN) v. Texas Commission on Environmental Quality—A Nut Case?

In Port Arthur Community Action Network (PACAN) v. Texas Commission on Environmental Quality, the Texas Supreme Court clarified the statutory definition of “Best Available Control Technology”(BACT) under the Texas Clean Air...more

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