The Court held that the U.S. Environmental Protection Agency (EPA) has the statutory authority to regulate greenhouse gases (GHGs) from new motor vehicles. The case arose after private organizations petitioned EPA to begin regulating four GHGs, including carbon dioxid (CO2), under the Clean Air Act....

A district court denied a group of companies' motion for summary judgment challenging the government's remedy for cleaning up PCB contamination in Wisconsin's Fox River. The companies argued that the administrative record is fatally incomplete due to the destruction of certain computer model data an...

The Ninth Circuit denied petitions challenging FERC orders that retroactively reset the market rates that were charged in the California electricity markets during the state's energy crisis of 2000 and 2001. After California deregulated and restructured its electricity market in the mid-1990s, price...

The Tenth Circuit upheld the DOI Secretary's decision to rescind 77 oil and gas leases on federal land around national parks in Utah. BLM auctioned the oil and gas leases to energy companies in late 2008 during the last weeks of the George W. Bush administration. After the auction but before the lea...

The D.C. Circuit held that FWS did not violate the ESA by removing the West Virginia Northern Flying Squirrel from the list of endangered species even though several criteria in the agency's recovery plan for the species had not been satisfied. The FWS Secretary reasonably interpreted the ESA as not...

The D.C. Circuit held that trade associations for the engine, petroleum, and food industries lack standing to challenge two EPA decisions approving the introduction of E15—a blend of gasoline and 15 percent ethanol—for use in select motor vehicles and engines. EPA granted "partial" waivers appro...

A district court held that the Tennessee Valley Authority (TVA) is liable for damages to property owners and residents following a containment dike failure at its Kingston Fossil plant that spilled more than 5 million cubic yards of coal ash sludge over approximately 300 acres. The court determined ...

The Ninth Circuit upheld FWS regulations issued under the Marine Mammal Protection Act (MMPA) that authorize the incidental take of polar bears and Pacific walruses resulting from oil and gas exploration activities in the Chukchi Sea and on the adjacent coast of Alaska. MMPA §101(a)(5)(A) requires ...

The D.C. Circuit vacated EPA's transport rule, also known as the Cross-State Air Pollution Rule, which sets sulfur dioxide and nitrogen oxides emissions limits for 28 upwind states based on those states' contributions to downwind states' air quality problems. The CAA's "good neighbor" provision requ...