The agency simultaneously issued a survey to validate the list.

By Joshua T. Bledsoe, Nikki Buffa, Betty M. Huber, Austin J. Pierce, and Shawna Strecker

On September 24, 2025, the California Air Resources Board (CARB) published a list of entities that it believes will be subject to requirements under Senate Bill (SB) 253 and/or SB 261. The list serves as an initial reference point for companies with a nexus to California regarding their reporting obligations. CARB

The proposed rules would have triggered EPA risk reviews and restrictions on the industry.

By Julia A. Hatcher, Jennifer K. Roy, Nolan Fargo, and Bruce M. Johnson

On July 9, 2025, the US Environmental Protection Agency (EPA) withdrew significant new use rules (SNURs) proposed under Section 5 of the Toxic Substances Control Act (TSCA) for 18 chemicals derived from waste plastic feedstocks.1 The 18 chemicals are part of a growing industry referred to as “advanced plastics

A new executive order seeks to streamline funding for and construction of data center projects by reducing regulatory red tape.

By Nikki Buffa, Aron Potash, Tal Carmeli, and Shawna Strecker

On July 23, 2025, the Trump administration issued an executive order titled “Accelerating Federal Permitting of Data Center Infrastructure” (the Order). The Order aims to “facilitate the rapid and efficient buildout” of data centers and associated infrastructure such as high‑voltage transmission lines and other equipment by “easing

The proposal could accelerate the permitting process for carbon capture and storage projects in the state.

By Joshua T. Bledsoe, JP Brisson, Nikki Buffa, Michael Dreibelbis, Jennifer Roy, Nolan Fargo, and Samantha Yeager

On June 9, 2025, the US Environmental Protection Agency (EPA) signed a proposed rule that, if approved, would grant Texas primary enforcement authority, or primacy, for permitting Class VI Underground Injection Control (UIC) wells under the Safe Drinking Water Act (SDWA).

If finalized, the rule would eliminate both Obama- and Biden-era limits on GHG emissions from fossil fuel-fired power plants.

By Karl A. Karg, Stacey L. VanBelleghem, Nikki Buffa, Devin M. O’Connor, and G. Jack Mathews

On June 11, 2025, the US Environmental Protection Agency (EPA) released a proposed rule under the Clean Air Act (CAA) titled “Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units” (the Proposed Repeal).

Under the current Obama- and