Baltimore G. & E. Co. v. NRDC
JUSTICE O’CONNOR delivered the opinion of the Court.
Section 102(2)(C) of the National Environmental Policy Act of 1969, 83 Stat. 853, 42 U.S.C. § 4332(2)(C) (NEPA), requires federal agencies to consider the environmental impact of any major federal action. [ Footnote 1 ] As part of its generic rulemaking proceedings to evaluate the environmental effects of the nuclear fuel cycle for nuclear powerplants, the Nuclear Regulatory Commission (Commission) [ Footnote 2 ] decided that licensing boards should assume, for purposes of NEPA, that the permanent storage of certain nuclear wastes would have no significant environmental impact, and thus should not affect the decision whether to license a particular nuclear powerplant. We conclude that the Commission complied with NEPA, and that its decision is not arbitrary or capricious within the meaning of § 10(e) of the Administrative Procedure Act (APA), 5 U.S.C. § 706. [ Footnote 3 ]
I
The environmental impact of operating a light-water nuclear powerplant [ Footnote 4 ]includes the effects of off-site activities necessary to provide fuel for the plant (“front end” activities), and of off-site activities necessary to dispose of the highly toxic and long-lived nuclear wastes generated by the plant (“back end” activities). The dispute in these cases concerns the Commission’s adoption of a series of generic rules to evaluate the environmental effects of a nuclear powerplant’s fuel cycle. At the heart of each rule is Table S-3, a numerical