The Tenth Circuit upheld a lower court ruling ordering mining and finance companies to comply with EPA's requests for information related to cleanup of a contaminated site in Utah. The companies argued that EPA exceeded its authority under CERCLA when it issued the information requests, the requests...

A district court held that an oil company was liable for a plume of gasoline beneath a former gasoline station that was migrating toward nearby housing units in White Plains, New York. A housing authority brought claims under RCRA, arguing its property was contaminated by discharges of gasoline and ...

The Third Circuit held that a PRP's settlement with New Jersey resolving its state-law liability in connection with contamination at a municipal landfill did not protect the party from lawsuits seeking contribution toward expenditures made by EPA on the same site. The district court had concluded th...

The First Circuit amended a previous ruling vacating an air permit issued by the Massachusetts Department of Environmental Protection (MDEP) for a proposed natural gas compressor station that is part of a pipeline connecting the northeastern United States and Canada. The court had found that MDEP fa...

The Third Circuit granted a petition to review EPA's approval of Pennsylvania's proposed NAAQS for ozone. An environmental group argued the standards wrongly claimed to reduce pollution output at the state's most advanced coal-burning power plants while "simply rubberstamping an average of current p...

A district court denied injunctive relief to residents in a lawsuit concerning soil and groundwater contamination at and adjacent to a manufacturing facility in Goshen, Indiana. Residents living adjacent to the facility brought a citizen suit under RCRA, arguing that the contamination might present ...

The D.C. Circuit denied in part and dismissed in part a petition to review EPA's guidance concerning the process of certifying cellulosic biofuel. A biofuel company argued the guidance was a legislative rule that was invalidly promulgated without notice and comment, conflicted with the regulation it...

A district court granted states' motion for summary judgment in a lawsuit concerning EPA's duty to limit air pollution drifting from upwind states into northeastern states. Connecticut, Delaware, Massachusetts, New Jersey, and New York argued that EPA failed to fulfill a nondiscretionary duty under ...

The Fifth Circuit vacated and remanded a lower court decision that imposed penalties against an oil company for alleged CAA permit violations at its industrial complex in Baytown, Texas. Environmental groups filed a CAA citizen suit against the company, alleging violations that occurred thousands of...

The D.C. Circuit upheld EPA's 2018 decision to add a wheel-covering facility in Mississippi to the NPL. The company that assumed environmental liabilities for the facility argued that EPA improperly applied the hazard ranking system regulations to the site by failing to account for the company's mit...