The Legal and Practical Challenges of California's Advanced Clean Fleets Regulation
Nota Bene Episode 101: Catching up with Global Climate Regulation with Nico van Aelstyn
Schoenbrod: SCOTUS Ruling Helps EPA Deal With a "Stupid Statute"
On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") announced a proposed rule to repeal key amendments to the 2024 Mercury and Air Toxics Standards ("MATS") for coal- and oil-fired electric utility steam...more
The Environmental Protection Agency ("EPA") has announced a new proposed rule that would strengthen the National Emission Standards for Hazardous Air Pollutants ("NESHAP") for Coal- and Oil- Fired Electric Utility Steam...more
The United States Environmental Protection Agency (“EPA”) published on February 15th a final rule reaffirming its decision that it remains appropriate and necessary to regulate hazardous air pollutants (“HAP”) from power...more
The saga for regulating mercury and air toxics from coal- and oil-fired power plants continues with a final rule promulgated by the U.S. Environmental Protection Agency (“EPA”) on April 16, 2020. EPA initially determined that...more
In December 2011, the EPA announced the Mercury and Air Toxics Standards under Section 112 of the Clean Air Act (CAA), commonly referred to as the MATS rule. The MATS rule governs the emission of mercury from electric power...more
United States Senator Tom Carper (D-Del.) sent a December 13th letter to the U.S. Environmental Protection Agency (“EPA”) Office of Information and Regulatory Affairs: . . . expressing grave concerns regarding the...more
The federal lawsuit filed by twenty-three states challenging EPA’s Mercury and Air Toxics Standards (MATS) is in the 8th inning, and things are not looking good for the challengers. Some background is appropriate. ...more
Environmental and Policy Focus - Supreme Court rejects new challenge to EPA’s air pollution rule - The Hill - Jun 13 - The Supreme Court on Monday declined to consider a third request from a group of states to...more
The Environmental Protection Agency's Mercury and Air Toxics Standards (MATS) placed national limits on mercury and other toxic emissions from power plants. The agency projected MATS to prevent 11,000 premature deaths, 4,700...more
On June 29, 2015, the Supreme Court cast serious doubt upon the future of the Mercury and Air Toxics Standards (“MATS”) by finding that the Environmental Protection Agency (“EPA”) failed to adequately consider the costs of...more
Earlier today the US Supreme Court issued a 5 to 4 decision in Michigan v. EPA that struck down the U.S. Environmental Protection Agency’s (EPA) Mercury and Air Toxics Standard (MATS) rule. The MATS rule imposes stringent...more
In Michigan v. EPA, the U. S. Supreme Court invalidated EPA’s rules limiting emissions of mercury and other pollutants from power plants, ruling that EPA inappropriately ignored the costs of regulation – particularly...more
In a 5-4 ruling, the U.S. Supreme Court today ruled that the EPA acted unreasonably when it refused to consider the cost of implementing its Mercury and Air Toxics Standard (MATS). The MATS rule, issued in 2012,...more