The court affirms a district court's grant of summary judgment to the Tennessee Valley Authority (TVA) on environmental groups' request for civil penalties and on its claim as to violations of the Clean Air Act's (CAA's) 20% opacity limitation occurring before May 20, 1999, but it reversed summary j...

The court reverses the dismissal of an individual's complaint against his employer under the Clean Air Act's (CAA's) whistleblower provision. The U.S. Department of Labor's Administrative Review Board (ARB) dismissed the complaint reasoning that the individual did not engage in a protected activity ...

The court rejects a mining association's statutory and constitutional claims challenging a 1999 Office of Surface Mining Reclamation and Enforcement (OSM) rule defining "valid existing rights." The Surface Mining Control and Reclamation Act prohibits new surface coal mining operations on certain lan...

The Court reversed the Fourth Circuit's grant of summary judgment in favor of a coal-fired power plant operator charged with violating the Clean Air Act's (CAA's) prevention of significant deterioration (PSD) regulations. The CAA's PSD and new source performance standards (NSPS) provisions both cove...

The Ninth Circuit affirmed a lower court decision that the Clean Air Act (CAA) does not preempt certain provisions of local "fleet rules" requiring operators to meet specified emission standards or engine requirements, but reversed and remanded the court's refusal to consider whether the CAA preempt...

The Fourth Circuit affirmed an award of attorney fees in a citizen suit brought under the Surface Mining Control and Reclamation Act with respect to the preliminary injunction phase of the litigation, but reversed fees awarded for the supplemental claims phase. The supplemental phase included plaint...

The D.C. Circuit upheld the U.S. Department of the Interior's (DOI's) interpretation of "valid existing rights" in a 1999 rule to foreclose surface mining operations in sensitive areas. A mining association argued that Congress inserted "valid existing rights" in the Surface Mining Control and Recla...

The Ninth Circuit upheld an injunction enjoining the California Air Resources Board from enforcing state regulations that limit emissions from the auxiliary diesel engines of ocean-going vessels within 24 miles of California's coast. Clean Air Act (CAA) §209(e)(2)(A) requires California to obta...

The Tenth Circuit held that the Federal Mineral Leasing Act (FMLA) does not provide political subdivisions of a state an implied cause of action to challenge the state's allocation of federal mineral royalties received under the Act. FMLA §191 directs the federal government to return 50% of fed...

A district court held that the applicable legal test for the "routine maintenance, repair, and replacement" exclusions found in the Clean Air Act (CAA) should be applied to activities that are considered "routine in the industry" rather than "routine at the unit." In a CAA enforcement action filed a...