ELR Citation: ELR 20891
No(s). s. 87-1438 et al (D.C. Cir. Apr 27, 1990)

The court generally upholds the Environmental Protection Agency's (EPA's) 1987 revisions to the Clean Air Act national ambient air quality standards (NAAQS) for particulate matter against challenges from industry and environmental groups. The 1987 revisions apply to particles with an aerodynamic dia...