The Tenth Circuit affirmed in part and vacated in part EPA's partial approval and partial disapproval of Wyoming's SIP addressing emissions at coal-fired power plants to reduce regional haze. EPA approved the SIP as to the Naughton plant, but disapproved it for the Wyodak plant, and substituted, thr...
The Tenth Circuit denied environmental groups' petition to review approval of Utah's July 2019 revised SIP addressing regional haze. The groups argued EPA abused its discretion by approving the SIP because Utah's alternative measure did not satisfy CAA national visibility goals, and that the Agency ...
A district court granted environmental groups' motion for a preliminary injunction in a challenge to FWS' decision to install a permanent pipeline for Arctic grayling in Red Rock Lakes Wilderness in southwestern Montana. The groups argued the decision violated the Wilderness Act by ignoring the Act'...
The Third Circuit denied an environmental group's petitions to review EPA's approval of certain air pollution control technology use at industrial facilities in Pennsylvania. The group argued EPA violated the CAA by focusing exclusively on emissions from those facilities instead of examining their i...
The Third Circuit vacated EPA's 2022 decision to reverse its prior determination and to require an oil refinery in the Virgin Islands to obtain a PSD permit before it can resume operations. The refinery owner petitioned for review, arguing EPA's application of its reactivation policy—under which a...
The D.C. Circuit reversed summary judgment for Oregon counties, trade groups, and timber companies in five lawsuits concerning President Obama's expansion of the Cascade-Siskiyou National Monument. Plaintiffs argued that by outlawing logging on land included in the monument through Proclamation 9564...
The D.C. Circuit denied a group of fuel refineries' petitions to review EPA's rule extending compliance reporting deadlines under the Renewable Fuel Standard program. The group argued the rule violated the CAA by providing obligated parties less than 13 months' compliance lead time—from EPA's anno...
A district court granted summary judgment for the State Department in a lawsuit concerning documents related to the agency's handling of the 2016 Paris Climate Agreement. A nonprofit group filed a FOIA request, seeking three documents concerning the "Circular 175" process for the agreement. The Depa...
The D.C. Circuit denied petitions to review EPA's promulgation of a rule that regulates the emission of greenhouse gases from aircraft engines under CAA §231 by aligning domestic standards with those recently promulgated by the International Civil Aviation Organization (ICAO). Twelve states, the Di...
The D.C. Circuit granted in part and denied in part petitions to review EPA's revisions to designations promulgated in 2018 for northern Weld County, Colorado, and El Paso, Texas, as areas that had attained 2015 ozone pollution standards. The revised designations folded Weld County into the greater ...