The D.C. Circuit granted in part and denied in part petitions to review EPA's attainment designations for its 2015 ozone NAAQS. Environmental groups, municipal governments, and the state of Illinois argued that the Agency failed to follow its own scientific and technical record when it decided that ...

The North Dakota Supreme Court affirmed a lower court ruling upholding the North Dakota Department of Environmental Quality's issuance of an air quality permit to construct a refinery. A conservation group argued the Department's omission of an enforceable permit limit for hazardous air pollutants (...