A district court granted Texas' motion to preliminarily enjoin the 2015 Clean Water Rule in Louisiana, Mississippi, and Texas. The state argued that implementing the rule would require it to spend significant time and taxpayer resources attempting to determine how the U.S. Army Corps of Engineers wi...

A Pennsylvania court affirmed the Pennsylvania Environmental Hearing Board's civil penalty assessment against a natural gas exploration company for violating the state Clean Streams Law. The company argued there was insufficient evidence to support the board's determination that contaminated water c...

The Ninth Circuit affirmed the dismissal of oil and trucking industry groups' challenge to Oregon's Clean Fuels Program, which regulates production and sale of transportation fuels based on greenhouse gas emissions. The groups argued that the program violated the dormant Commerce Clause by facially ...

A California appellate court affirmed a trial court decision concerning application of the state's public trust doctrine to the state's extraction of groundwater in the Scott River watershed. Environmental groups argued that groundwater resources that are interconnected with the surface water flows ...

The Third Circuit denied review of the Pennsylvania Department of Environmental Protection's decision to grant a CWA §401 certification for a natural gas pipeline project. Environmental groups argued that the department acted arbitrarily and capriciously by issuing a §401 certification that was im...