Pennsylvania's highest court largely upheld a temporary injunction enjoining the state environmental agency from enforcing certain regulations governing unconventional oil and gas operations. The court reversed the lower court's issuance of the injunction on just two issues. Contrary to the ruling o...

A district court granted South Carolina's motion to preliminarily enjoin DOE from terminating a mixed-oxide fuel fabrication facility project currently under construction until the case can be decided on its merits. The project is designed to turn weapons-grade plutonium into commercial reactor fuel...

The Second Circuit affirmed a lower court decision that CERCLA preempts state tort law claims brought by residents living near the Onondaga Lake Superfund site. The owner of the site undertook remedial action pursuant to a federal consent decree. The residents argued, on a state tort law theory, tha...

The Ninth Circuit upheld a preliminary injunction enjoining California Department of Public Health officials from enforcing the California Medical Waste Management Act (MWMA) against a medical waste facility with regard to how it disposes of medical waste at facilities outside the state. The facilit...

A Texas court, ruling on a petition for pre-suit discovery, held that it would have jurisdiction over a major oil corporation's potential lawsuit against several California cities that have filed suit against it relating to climate change. The company's potential claims would allege, among other thi...