Tag Archives: “WildEarth Guardians v. McCarthy”

EPA Does Not Have a Nondiscretionary Duty to Revise PSD Regulations When It Amends a NAAQS

On Monday, the 9th Circuit Court of Appeals ruled that EPA does not have an obligation to amend PSD regulations for a criteria pollutant within two years of revising the National Ambient Air Quality Standard for that pollutant.

WildEarth Guardians had sued EPA under section 304(a)(2) of the Clean Air Act, which authorizes suits against the Administrator for a failure “to perform any act or duty … which is not discretionary….”

What was the basis for the alleged nondiscretionary duty? … More