ELR Citation: ELR 20669
No(s). 74-2063 (D.C. Cir. Aug 2, 1976)

The court upholds EPA's regulations for the prevention of the significant deterioration of air quality. The regulations, issued pursuant to Sierra Club v. Ruckelshaus, 2 ELR 20262, aff'd, 2 ELR 20656 (D.C. Cir.), 3 ELR 20684 (U.S.), provide for three classes of allowable incremental increases in par...