The court upholds a district court dismissal for lack of subject matter jurisdiction of recreational groups' claims that the U.S. Forest Service violated the U.S. Constitution and the Administrative Procedure Act (APA) when it designated certain areas of the Shawnee National Forest as Research Natur...

The court affirmed a lower court's grant of summary judgment in favor of a power company charged with modifying its power plants without first obtaining permits in violation of the Clean Air Act's (CAA's) prevention of significant deterioration (PSD) provisions. The company updated its coal-fired ge...

The court vacates the U.S. Environmental Protection Agency's equipment replacement provision (ERP) rule, which expanded the routine maintenance, repair, and replacement exclusion from new source review (NSR) requirements by allowing sources to avoid NSR when replacing equipment that does not exceed ...

The court holds that the New York Air Pollution Mitigation Law is preempted by the Clean Air Act (CAA) and violates the U.S. Commerce Clause. Under Air Pollution Mitigation Law §66-k, an electric generator is assessed an offset penalty when it sells a sulfur dioxide (SO2) allowance to a generator i...

The D.C. Circuit granted in part environmental groups' petition for review of a final rule promulgated by the U.S. Environmental Protection Agency (EPA) to regulate "hot spot" analyses undertaken as part of the State Implementation Plan for National Ambient Air Quality Standards transportation proje...

The court dismisses a property owner's Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Resource Conservation and Recovery Act (RCRA), Federal Water Pollution Control Act (FWPCA), and state common-law claims against prior owners of the property and a state agency for r...

The court upholds a Federal Aviation Administration (FAA) rule that was promulgated pursuant to the Overflights Act and designed to reduce aircraft noise from sight-seeing tours in the Grand Canyon National Park. The Act required the Secretary of the Interior, via the National Park Service (NPS), to...

The court holds that a U.S. Environmental Protection Agency (EPA) report classifying environmental tobacco smoke (ETS) as a known carcinogen violated the Radon Gas and Indoor Air Quality Research Act. The report classifies ETS as a group A carcinogen known to cause cancer in humans. The court first ...

The court holds a landowner liable under the Federal Water Pollution Control Act (FWPCA) for discharging polluted stormwater without a permit into a stream on his property that flows into ponds on his neighbors' property. The discharges occurred when the landowner was harvesting timber and developin...

The court holds that the U.S. Environmental Protection Agency's (EPA's) decision to implement the direct federal underground injection control (UIC) program on certain New Mexico lands based on their Native American or disputed jurisdictional status did not violate either the Safe Drinking Water Act...