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
Previously we’ve reviewed overarching expectations of the second Trump Administration, how the Trump Administration will act on California’s emissions waivers, the steps the Trump Administration is likely to take with respect...more
On the day of his inauguration, President Joe Biden issued a historic number of executive orders, several of which focused on overturning actions taken by the Trump Administration’s Environmental Protection Agency (EPA). We...more
Historically, regulations under the federal Clean Air Act (CAA) and related state laws divided the world into “stationary” and “non-stationary sources.” “Stationary sources” included facilities like power plants and factories...more
The U.S. Environmental Protection Agency ("EPA") has proposed regulations for calculating methane emissions fees required beginning this year under the Inflation Reduction Act ("IRA"). Section 136 of the Clean Air Act (added...more
A coalition of states has opened a new front in the ongoing battles between the Trump Administration’s efforts to streamline regulations applicable to industry and the interests favoring additional regulation. In response to...more