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
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
In an unprecedented move, the Trump administration established an electronic mailbox to allow the regulated community to request a Presidential Exemption to certain requirements of the Clean Air Act (CAA). Under Section...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
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
The Tennessee Air Pollution Control Board (“TACB”) issued a March 4th Technical Secretary’s Order and Assessment of Civil Penalty (“Order”) addressing an alleged air permit violation by State Industries, LLC (“State”). See...more
The U.S. Environmental Protection Agency (“EPA”) Office of Inspector General (“OIG”) issued a March 25th Notification of Evaluation titled: Status of Clean Air Act State Implementation Plan Submittals and Approvals...more
Since 1995, EPA has followed a policy that any air emissions source that emits one or more hazardous air pollutants (“HAPs”) above major source emissions thresholds is always considered a major source of HAPs. This is so even...more
On January 25, 2018, the Environmental Protection Agency (EPA) withdrew its longstanding but controversial “once in, always in” policy that a “major source” of hazardous air pollutants (HAP) was forever locked into “major...more
Seyfarth Synopsis: In another example of business-friendly regulatory agency actions, the U.S. Environmental Protection Agency has just rescinded the “Seitz Memo” associated with the “Once In, Always In” policy affecting the...more
On January 25, 2018, EPA announced that it was withdrawing its “once in, always in” policy for the classification of major sources of hazardous air pollutants (HAPs) under Section 112 of the Clean Air Act. Under its new...more