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 ...
The D.C. Circuit, in a split ruling, vacated certain provisions of EPA's rule phasing out the use of hydrofluorocarbons (HFCs). Two companies and three trade groups argued EPA exceeded its authority in issuing the rule and that the American Innovation and Manufacturing (AIM) Act, which directed the ...
In an unpublished order, the Fifth Circuit, 2-1, stayed EPA's disapproval of SIPs submitted by Texas and Louisiana following the Agency's 2015 revision to the ozone NAAQS. The states moved for a stay pending review of EPA's disapproval. The court found a stay was appropriate because the states made ...
The D.C Circuit denied an industry group's challenge to EPA's 2021 rule requiring power plants in several upwind states to reduce nitrogen oxide emissions. The group argued the rule was arbitrary and capricious, and that EPA failed to conduct a legally and technically appropriate assessment as requi...
The Sixth Circuit granted a petition to review EPA's removal of an air nuisance rule from Ohio's SIP. Environmental groups and individuals argued that EPA violated the CAA and APA in removing the rule. EPA moved to remand without vacatur to review its removal of the rule. The court found that vacatu...
The Fifth Circuit granted small refiners' motion to stay certain compliance obligations under the CAA pending appeal of EPA's decision denying their requested hardship exemptions from the Act's Renewable Fuel Standard obligations. The refiners argued EPA's late 2021 interpretation of CAA provisions ...
A district court granted in part and denied in part a pipeline owner's motion for summary judgment in a CERCLA suit brought by the owner of land where the pipeline is located in West Virginia. The landowner alleged that the pipeline leaked and contaminated her soil and groundwater, and sought to rec...
A district court granted a federal contractor's motion for partial summary judgment in a CERCLA liability suit brought by the state of New Mexico and a Native American reservation concerning Gold King Mine's release of millions of gallons of contaminated water into nearby rivers in 2015. The contrac...
In an unpublished opinion, the Ninth Circuit affirmed summary judgment for the U.S. government in a CERCLA liability lawsuit, requiring oil companies to reimburse approximately $50 million of EPA's environmental cleanup costs at a Superfund site in California. The government had sought reimbursement...