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EPA Decreases Limit for Ground-Level Ozone

In an updated rule released October 1, 2015, the Environmental Protection Agency (EPA) set tighter limits on ozone – a compound regarded as a precursor to smog. In setting the new standard at 70 parts per billion (ppb) for...more

Supreme Court Decision Could Limit EPA's Authority Over Greenhouse Gas Emissions

On June 29, 2015, the U.S. Supreme Court delivered another warning to the Environmental Protection Agency (EPA) against overstepping its statutory authority under the Clean Air Act. In Michigan v. Environmental Protection...more

Supreme Court Decides Michigan v. Environmental Protection Agency

On June 29, 2015, the United States Supreme Court decided Michigan v. Environmental Protection Agency, No. 14-46, and two other consolidated cases, holding that the Environmental Protection Agency (EPA) acted unreasonably,...more

EPA Regulation of Carbon Dioxide Emissions: Supreme Court Addresses EPA's Greenhouse Gas Permitting Authority – Implications for...

On June 23, 2014, the U.S. Supreme Court handed down the first decision to place limitations on the U.S. Environmental Protection Agency's (EPA) authority to regulate greenhouse gases (GHG) under the Clean Air Act. In the...more

EPA Regulation of Power Plant Carbon Dioxide Emissions: Draft Rule for Existing Power Plants Released

On June 2, 2014, the Environmental Protection Agency (EPA) released a draft of its proposed rule that will, for the first time, limit carbon dioxide (CO2) emissions at existing fossil-fuel fired electric utility generating...more

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