The Ninth Circuit upheld EPA's approval of Nevada's SIP for regional haze. In the SIP, Nevada provided reasonable progress goals for attaining natural visibility conditions at the Jarbridge Wilderness Area in remote northeastern Nevada, the state’s only Class I federal area.

The D.C. Circuit upheld a $72 million judgment against an automobile manufacturer for violating a consent decree requiring certain model year 2005 engines to comply with EPA’s model-year 2006 nitrogen oxide (NOx) emissions standard.

A Pennsylvania court severed in part and struck down in part certain provisions of Act 13, pertaining to oil and gas operations in the Marcellus Shale, that the Pennsylvania Supreme Court left undisturbed in its December 2013 decision invalidating portions of the law on constitutional grounds.

A Colorado court struck down a city's ban on hydraulic fracturing. In 2012, voters passed an amendment to the city charter that bans fracking and the storage and disposal of fracking waste within city limits. The oil and gas industry challenged the ban, arguing that it was preempted.

A New York court dismissed a lawsuit seeking to compel the state to finalize its supplemental EIS on hydraulic fracturing.

A New York court dismissed mineral rights owners' lawsuit seeking to compel the state to finalize its supplemental EIS on hydraulic fracturing.

An Illinois appellate court upheld a state plan requiring state utilities to purchase power from a coal-fueled, near-zero emissions electric power plant.

The First Circuit vacated and remanded a lower court decision dismissing environmental groups' CWA claims against the operators of four hydroelectric dams along the Kennebec River.

A district court upheld a CWA §404 permit issued by the U.S. Army Corps of Engineers for the construction of a large marine transfer station near the upper east side of New York City.

The Fourth Circuit affirmed a lower court decision denying an environmental group's motion to intervene in a poultry farmer's lawsuit against EPA.