Walter Roe Mansfield, Hanly v. Kleindienst — Opinion of the Court (1972)
“ We agree with Chief Judge Friendly that an impact statement should not be required where the impact will be minor or unimportant, or where “there is no sensible reason for making one,” and that such a statement should be required where the action may fairly be said to have a potentially significant adverse effect. But these conclusions merely pose the problem which cannot be solved by an interchange of adjectives. In our view such a morass can be avoided only by formulation of more precise factors that must be considered in making the essential threshold determination. ”
