A district court abstained from rendering a decision in a case concerning earthquakes allegedly caused by fracking operations in Oklahoma, choosing to instead defer to the expertise of a state commission. An environmental group brought suit against the energy company claiming that its fracking opera...

The Ninth Circuit upheld an EPA federal implementation plan (FIP) under the CAA that replaced rejected portions of the Arizona SIP concerning air quality at federal parks and forests. In 2011, Arizona submitted a SIP to EPA for approval. EPA disapproved certain aspects of Arizona’s SIP concerning ...