The court holds that environmental groups have standing to bring a Clean Air Act (CAA) action against a Texas oil refinery for violating hydrogen and sulfur dioxide emission standards and further…

The court holds that an aluminum manufacturer is not entitled to a share of pollution emissions allowances allocated to an electric power plant under the Clean Air Act (CAA). The manufacturer…

The court upholds a district court decision ordering the upward adjustment of sentencing for three labor contractors who violated the Clean Air Act (CAA) and the Social Security Act in connection…

The court largely upholds a U.S. Environmental Protection Agency (EPA) rule mandating that 22 states and the District of Columbia revise their state implementation plans (SIPs) to mitigate ozone…

The court holds that the U.S. Environmental Protection Agency's (EPA's) decision to implement the direct federal underground injection control (UIC) program on certain New Mexico lands…

The court holds that the U.S. Environmental Protection Agency (EPA) did not exceed its discretion under §111 of the Clean Air Act (CAA) in promulgating new source performance standards (NSPS) for…

The court grants automakers' motion to stay their challenge to Massachusetts' zero emission vehicle standards pending the automakers' appeal of a U.S. Environmental Protection…

The court denies in part and grants in part the U.S. Environmental Protection Agency's (EPA's) petition for rehearing of a decision holding that EPA's revised national ambient air…

The court holds that the U.S. Environmental Protection Agency's (EPA's) adoption of a rule requiring compliance assurance monitoring (CAM) of major emission sources complies with the…

The court holds that the U.S. Army Corps of Engineers has jurisdiction under the Migratory Bird Rule to require a consortium of municipalities to obtain a Federal Water Pollution Control Act (…