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Clean Air Act


Expect Legal Challenges to New EPA Rules on Emissions
emissions-carbon-dioxide

The U.S. Environmental Protection Agency (EPA) in May 2023 published a proposed rule that would establish new source performance standards (NSPS) and existing source performance standards (ESPS) for greenhouse gas…


Carbon Capture Key to EPA's New Power Plant Emissions Rule

The U.S. Environmental Protection Agency (EPA) has unveiled new greenhouse gas (GHG) standards for the nation’s power plants, moving to require both existing and new facilities to capture emissions of…


Supreme Court Limits EPA Authority to Regulate Power Plant Emissions

The U.S. Supreme Court has curbed the Environmental Protection Agency’s (EPA’s) options for limiting emissions of greenhouse gases (GHG) from power plants, an important environmental decision that could impact the…


Montana District Court Vacates EPA's 'Secret Science' Rule

The Environmental Protection Agency's (EPA's) "Secret Science" rule establishing new standards for consideration of certain "pivotal" scientific studies, which was slated to go into effect on Jan. 6 of this…


EPA Reinterprets ‘Ambient Air,’ Further Tweaks New Source Review 

The Environmental Protection Agency (EPA) has finalized a change to a long-standing policy interpreting “ambient air”—a foundational concept under the Clean Air Act that applies to all types of air…