The Tenth Circuit denied petitions for review challenging EPA's approval of a regional cap-and-trade program regulating sulfur dioxide (SO2) emissions to address regional haze over the Colorado Plateau, a Class I area. Under the CAA's regional haze rule for Class I areas, states have the option of u...

A district court granted summary judgment in favor of the U.S. Bureau of Reclamation on all but one claim in a lawsuit filed against the agency challenging its decision in 2013 to make certain "flow augmentation releases" (FARs) of water from a dam located in the Trinity River Division of the Centra...

The D.C. Circuit upheld EPA's denial of a petition to reconsider an Agency rule allocating production allowances for hydrochlorofluorocarbons (HCFCs), ozone-depleting refrigerants. The petitioners argued that reconsideration should be granted because the rule has an adverse environmental impact and ...

A district court dismissed Nebraska's lawsuit challenging EPA's proposed standards to limit carbon dioxide emissions from new or modified fossil fuel-fired electric utility generating units. As part of the proposed rule, EPA found that certain technology was "adequately demonstrated" for purposes of...

A Louisiana court held that the state erred in issuing a coastal use permit to a natural gas storage and transport company that was needed to create two new natural gas storage caverns in the Jefferson Island salt dome underneath Lake Peigneur. The state's natural resource department violated the st...

A district court held that it has subject matter jurisdiction over a CAA §321(a) lawsuit against EPA for its alleged failure to evaluate the potential for job losses due to its CAA regulation and enforcement efforts. EPA filed a motion to dismiss, arguing that the statute is discretionary and that ...