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...

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...

Pennsylvania's highest court reversed a lower court decision that would have allowed a company to drill, construct, develop, and operate unconventional natural gas wells as a conditional use in a district zoned for residential and agricultural uses. The lower court held that the proposed gas well wa...