The D.C. Circuit affirmed dismissal of an environmental group's request to compel EPA to produce guidelines for commercial or industrial solid waste incinerators (CISWI) and other categories of solid waste incinerators (OSWI). The group argued that the Agency failed to comply with nondiscretionary d...

The D.C. Circuit vacated a 2018 EPA rule that instituted a complete vacatur of its 2015 rule blocking the use of hydrofluorocarbons as replacements for ozone-depleting substances. An environmental group argued the 2018 rule was invalid because it was a legislative rule and was thus improperly promul...

The D.C. Circuit dismissed a petition to review EPA's Guidance on Significant Impact Levels (SILs) for Ozone and Fine Particles in the Prevention of Significant Deterioration Permitting Program, which sets numerical SILs that can be used by companies applying for PSD permits. An environmental group ...

A district court granted two Baltimore solid waste incineration facilities' partial motion for summary judgment in a challenge to the Baltimore Clean Air Act (BCAA). The facilities argued the BCAA was "conflict preempted" by Maryland law because it prohibited solid waste incinerators from operating ...

The U.S. Supreme Court upheld an appellate court ruling that an oil refining company was responsible for $140 million in damages from a 2004 oil spill in the Delaware River. The owner of the vessel involved in the spill argued that the company it chartered to deliver crude oil from Venezuela to the ...

A district court denied summary judgment to environmental groups in a challenge to the U.S. Coast Guard's approval of a contingency plan for a Michigan oil pipeline. The groups argued that the plan failed to respond to a worst-case discharge, as required by the OPA, by failing to consider the need f...