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National ambient air quality standards (NAAQS), §109

American Trucking Ass'n v. EPA

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 quality standards (NAAQS) for ozone were not based on...

American Trucking Ass'n v. EPA

The court holds that the U.S. Environmental Protection Agency's (EPA's) construction of the Clean Air Act (CAA) in promulgating the revised national ambient air quality standards (NAAQS) for ozone and particulate matter (PM) effects an...

Alexandria, City of v. Slater

The court holds that the U.S. Department of Transportation's (DOT's) approval of a 12-lane bridge to replace an existing 6-lane bridge in Alexandria, Virginia, violated the Clean Air Act (CAA), the National Environmental Policy Act (...

American Lung Ass'n v. EPA

The court holds that the U.S. Environmental Protection Agency (EPA) failed to explain adequately why the physical effects felt by some asthmatics from exposure to short-term, high-level sulfur dioxide (SO2)...