
The proposal could accelerate the permitting process for projects in the state, including carbon capture and storage (CCS) projects.
By Joshua T. Bledsoe, Nikki Buffa, Jennifer K. Roy, and Samantha Yeager
The US Environmental Protection Agency (EPA) has proposed a significant regulatory change that could expedite permitting for Underground Injection Control (UIC) wells in Arizona. A proposed rule published on May 19, 2025, would grant the Arizona Department of Environmental Quality (ADEQ) primary enforcement authority, or “primacy,”