The court upholds the U.S. Environmental Protection Agency's (EPA's) approval of the Nevada Clean Air Act (CAA) state implementation plan (SIP) revision that requires gasoline sold in…

The court largely upholds a U.S. Environmental Protection Agency (EPA) rule mandating that 22 states and the District of Columbia revise their state implementation plans (SIPs) to mitigate ozone…

The court holds that an electric utility lacks standing to petition for review a U.S. Environmental Protection Agency (EPA) final rule approving a revision to the new source review program of…

The court denied a petition to review the U.S. Environmental Protection Agency's (EPA's) approval of a revision to Missouri's state implementation plan (SIP) that replaced four area…

The court holds that trade associations' action for judicial review of a U.S. Environmental Protection Agency (EPA) rule permitting the use of "any credible evidence" to prove or…