The court holds that an electric utility violated the Clean Air Act (CAA) when it completed 11 construction activities that modified a coal-fired electric-generating facility without first calculating post-construction emissions and obtaining preconstruction CAA prevention of significant deteriorati...

The court holds that the no surprises rule, which provides regulatory assurances to holders of incidental take permits (ITPs) issued under the Endangered Species Act (ESA) that they will not be required to commit funds or resources beyond those contemplated at the time the permit was issued to mitig...

The court holds that a local transportation control measure, adopted as part of California's state implementation plan to attain federal air quality standards in the San Francisco Bay Area, does not impose an enforceable obligation on the local transportation commission to increase public transit ri...

The court holds that the U.S. Fish and Wildlife Service's (FWS') denial of an incidental take permit authorizing logging on 40 acres of protected owl habitat was neither a physical nor a regulatory taking. Contrary to the lower court's decision, the landowners' claim is ripe. Although the FWS invite...

The U.S. Supreme Court held that certain aspects of local fleet rules do not escape preemption under CAA §209(a) simply because they address the purchase of vehicles rather than their manufacture or sale. The fleet rules prohibit the purchase or lease of vehicles by fleet operators that do not ...

The Sixth Circuit upheld EPA's redesignation of Cleveland, Ohio, from nonattainment to attainment for particulate matter under CAA §107(d)(3)(E). An environmental group argued that EPA illegally waived statutory requirements when it redesignated the area to attainment by not fully approving the...

The Ninth Circuit upheld the Secretary of Commerce's decision to allocate a portion of the U.S. harvest of Pacific whiting to the Makah Indian Tribe. Because the "best available scientific information" supports a sliding scale method of allocation, the National Marine Fisheries Service's (NMFS') rel...

A district court enjoined and vacated a final U.S. Fish and Wildlife Service (FWS) rule that reduced protection afforded to the gray wolf under the Endangered Species Act (ESA) by changing its status from "endangered" to "threatened" in some regions. The FWS' interpretation of "significant portion o...

The court holds that the Illinois Coal Act violates the Commerce Clause of the U.S. Constitution. The Act requires public utilities to devise Clean Air Act (CAA) compliance plans and present them to the Illinois Commerce Commission for approval. The Act requires the utilities and the Commission to t...

The court dissolves a 1992 injunction that prevented the U.S. Forest Service (Forest Service) from auctioning or awarding timber sales to log suitable habitat for the northern spotted owl in Regions 5 and 6 until the Forest Service implemented revised standards and guidelines in compliance with the ...