A district court granted in part an environmental group's motion for summary judgment to compel EPA to act on its 2016 Plan for the 2008 eight-hour ozone NAAQS adopted by the San Joaquin Valley Air Pollution Control District and granted in part the Agency's motion requesting an extension on the dead...

The Second Circuit denied environmental groups' and industry associations' petitions to review a final rule promulgated by EPA establishing requirements for cooling water intake structures (CWISs) at existing power plants and manufacturing facilities, as well as a biological opinion jointly issued b...

The D.C. Circuit denied environmental groups' petition to review a 2016 rule that EPA uses to determine whether an event caused by recurring activity is "exceptional" and thus exempt from a state's emissions report. The groups argued that EPA misread the definition of "natural event" under the excep...

The Fifth Circuit vacated a lower court's decision to preliminarily enjoin a pipeline company from constructing part of a pipeline through the Atchafalaya Basin, a sensitive wetlands area in southern Louisiana. Environmental groups argued that the EAs conducted by the U.S. Army Corps of Engineers (C...

The Ninth Circuit affirmed a district court's denial of a car owner's motion to intervene in DOJ's case against a German automaker to resolve alleged CAA violations. The owner argued that DOJ's settlement with the automaker violated Virginia's SIP by not requiring all affected vehicles to be bought ...

The D.C. Circuit denied Delaware's petition to review EPA's decision granting the Philadelphia area an extra year to comply with national ground-level ozone standards. Delaware argued that the Agency's extension violated the CAA because not all four states in the Philadelphia area applied for an ext...

The D.C. Circuit denied petitions from industry groups challenging EPA's new kiln air emissions standards for brick and clay manufacturers, and largely granted petitions from environmental groups who argued the standards were not strict enough to protect human health. Industry groups argued that the...

The U.S. Supreme Court, in an ongoing dispute between Florida and Georgia over the apportionment of the Apalachicola-Chattahoochee-Flint River Basin's waters, remanded a Special Master's recommendation that Florida's request for a cap on Georgia's consumption of water from the Flint River be denied....

The Texas Supreme Court upheld an appellate court decision prohibiting a city's efforts to ban the use of single-use plastic and paper bags. A retail association argued that an ordinance adopted in 2014 to reduce litter from the bags conflicted with the Texas Solid Waste Disposal Act. The appellate ...

The Fourth Circuit reversed a lower court's grant of summary judgment requiring EPA and West Virginia to address coal mining-related water pollution. Environmental groups argued that EPA failed to perform its nondiscretionary duty under the CWA to promulgate TMDLs for biologically impaired waters in...