The D.C. Circuit granted a petition to reconsider EPA's Final Mercury and Air Toxics Standards (MATS) Rule that exempted coal- and oil-burning power plant boilers' startup periods from numerical limits on hazardous air pollutants (HAPs).

The D.C. Circuit denied a petition to review the Pipeline and Hazardous Materials Safety Administration’s rule regulating disclosure requirements for railroad companies transporting hazardous materials.

The Tenth Circuit reversed and remanded a district court ruling upholding FWS' designation of critical habitat for the endangered jaguar.

A district court dismissed constitutional challenges to Colorado's forced pooling statute, under which property owners were required to allow oil and gas companies to extract their minerals.

A district court upheld DOI's renewal of two mineral leases that had previously been rejected for a copper-nickel mine in Superior National Forest.

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.

A district court granted in part and denied in part a motion for summary judgment in a challenge to the Forest Service's and BLM's authorizations of hydraulic fracturing, or fracking, in Wayne National Forest.