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Federal Agency Treatment Of Uncertainty In Environmental Impact Statements Under The Ceq's Amended Nepa Regulation § 1502.22: Worst Case Analysis Or Risk Threshold, Charles F. Weiss
Michigan Law Review
This Note traces the judicial and administrative treatment of uncertainty under NEPA and supports the CEQ's replacement of worst case analysis with a qualitative probability threshold. Part I discusses the development of reasonableness standards in NEPA common law to define agency obligations prior to promulgation of the worst case analysis regulation. Part II reviews the worst case analysis regulation and its judicial construction. Finally, Part III outlines the amended regulation, which replaces worst case analysis with a probability threshold employing the rule of reason to limit EIS discussion to environmental effects shown through credible scientific evidence to be reasonably foreseeable. …