The Ninth Circuit upheld the dismissal of an environmental group's challenge to a CAA permit that allows an oil company to conduct "pollutant emitting activities" associated with a drilling vessel in the Beaufort Sea off Alaska's North Slope. CAA §504(e) is ambiguous as to whether "increment" requi...

The Third Circuit affirmed a lower court decision dismissing the U.S. government's lawsuit against the current and former owners of a coal-fired power plant in Indiana County, Pennsylvania, for alleged CAA violations that took place 15-20 years earlier. The government alleged that the former owners ...

The Third Circuit held that the CAA does not preempt state law tort claims brought by private property owners against a source of pollution located within the state. The case arose after a group of 1,500 residents who live within one mile of a coal-fired power plant filed suit against the facility u...

A district court dismissed groups' lawsuit challenging BLM's approval of a 370-megawatt utility-scale solar power plant currently under construction in the Mojave Desert. BLM's decision to consider cumulative impacts within a single EIS was not arbitrary, capricious, an abuse of discretion, or other...

The D.C. Circuit remanded EPA's "maximum achievable control technology" (MACT) standards for sewage sludge incinerators under CAA §129. The court upheld EPA's authority to regulate sewage sludge incinerators under §129, deferring to the Agency's interpretation of "solid waste incineration unit" as...

The D.C. Circuit denied petitions challenging EPA's revised NESHAPs for primary lead processing operations. Despite petitioners' argument to the contrary, EPA's use of the lead NAAQS as a benchmark in setting a NESHAP for lead compounds does not violate the CAA's prohibition on regulating elemental ...

The Ninth Circuit, in an unpublished opinion, affirmed in part and reversed in part a lower court decision denying an environmental group's motion to preliminarily enjoin a BLM-approved timber sale. The district court did not abuse its discretion by ruling that the group failed to raise serious ques...

A district court held that the U.S. Forest Service complied with NEPA when it promulgated the land and resource management plan (LRMP) for the Beaverhead-Deerlodge National Forest in Montana. The forest, the state's largest, covers 3.35 million acres and stretches over eight counties in southwestern...