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PPG Indus. v. Costle

ELR Citation: ELR 20858
Nos. No. 79-1708, 659 F.2d 1371/16 ERC 1329/(D.C. Cir., 07/30/1981)

The court remands to the Environmental Protection Agency (EPA) a new rule promulgated pursuant to §319 of the Clean Air Act that changes the reference methods used to measure compliance with the 24-hour national ambient air quality standards (NAAQS) for sulfur oxides....

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