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"
Current Environmental Protection Agency (EPA) Administrator Lee Zeldin proposed a rule today to rescind 2009 rules that form the basis of greenhouse gas (GHG) emissions limitations, a move that will almost certainly lead to...more
The Environmental Protection Agency announced July 18 it would continue workforce reductions through the elimination of its Office of Research and Development, which provides the independent scientific research that underpins...more
Two weeks ago, the Environmental Protection Agency (EPA) released its proposed repeal of the rules governing greenhouse gas emissions from fossil fuel-fired power plants. Included within the proposal is a new legal...more
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
On June 17, 2025, the U.S. Environmental Protection Agency (“EPA”) published a proposed rule to repeal the amendments to the Mercury and Air Toxics Standards (“MATS”) adopted by the Biden administration in 2024. These...more
On May 16, 2025, the U.S. Court of Appeals for the Fifth Circuit issued a significant ruling in a longstanding dispute between the Texas Commission on Environmental Quality (TCEQ) and the U.S. Environmental Protection Agency...more
The EPA’s Office of Air and Radiation (“OAR”), responsible for most of the EPA’s major air regulatory and policy efforts, will be restructured in the months to come. This shakeup comes on the heels of the EPA’s announcement...more
The Colstrip Power Plant in Montana is now one of the early applicants to the new EPA exemption application process which we have previously discussed here. Specifically, the Colstrip plant has requested a two-year exemption...more
In a significant development for Arizona’s business community and environmental policymakers, the U.S. Environmental Protection Agency (EPA) has paused its planned reclassification of Maricopa County from “Moderate” to...more
Grants a two-year exemption from the EPA's updated Mercury and Air Toxics Standards (MATS) rule for certain stationary sources, citing the lack of commercially viable emissions-control technology needed to meet the rule’s...more
In what it called “the greatest and most consequential day of deregulation in U.S. history,” the Environmental Protection Agency (EPA) announced its most expansive deregulatory initiative to date on March 12, 2025. Through a...more
On April 25, 2024, the Environmental Protection Agency (EPA) signed four final rules representing multi-media regulation (air, water, waste, climate) for the utility sector. Individually, each rule would have been notable for...more
In March 2023, the EPA issued its final Good Neighbor Plan, the last in a series of legislations designed to reduce emissions of ozone-forming nitrogen oxide (NO2) which cross state borders. Specifically, the Plan was...more
In the Byzantine complexity of the Clean Air Act (CAA), EPA’s “once in, always in” policy regarding hazardous air pollutants (HAP) has been particularly confounding. And now it’s back in play, through regulatory revisions...more
A combined 82 Senators and Members of the United States House of Representatives sent a May 22nd letter to United States Environmental Protection Agency Administrator Michael Regan addressing certain aspects of EPA’s proposed...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
On January 6, 2023, the U.S. Environmental Protection Agency (the EPA) released a pre-publication copy of a Proposed Rule, which will lower the annual National Ambient Air Quality Standard (NAAQS) for fine particulate matter...more
For air emission sources in New Haven County, Middlesex County, and Shelton, Connecticut, the regulatory landscape will change on November 7, 2022. Per a regulation published on October 7, 2022, EPA is reclassifying the...more
On April 8, 2022, U.S. EPA added the industrial solvent 1-bromopropane (1-BP) to its list of CERCLA hazardous substances; this listing was triggered by U.S. EPA’s decision to add 1-BP to the Clean Air Act’s list of hazardous...more
Throughout the first year of the Biden-Harris Administration, Environmental Justice (EJ) has been a focus of the U.S. Environmental Protection Agency. As I wrote about in November 2021, since January 2021 EPA has released...more
After years of attempts with varying success to regulate methane emissions from new oil and gas wells, the Biden administration has shifted strategy in proposing a regulatory program covering both new and existing oil and...more
The first action proposes first-time emission guidelines to reduce methane emissions from almost 1 million existing oil and gas wells, almost 2,000 existing interstate natural gas compressor stations, and over 500 existing...more
As we reported at the beginning of the year, President Biden has been making environmental justice one of his priorities since long before he took office. The United States Environmental Protection Agency (EPA) recently took...more
New EPA rule aims to limit tough clean air measures under Biden - The New York Times – December 9 - The U.S. Environmental Protection Agency (EPA) this Wednesday completed a rule that could weaken federal authority to...more
On April 14, 2020, U.S. EPA proposed to retain the current national ambient air quality standards (NAAQS) for particulate matter (PM) without revision. ...more