(a) A programmatic or generic EA or EIS may be prepared to address a proposed program, policy, or plan, or a proposed action that has a wide geographic scope.

(b) A programmatic EA or EIS can support high-level or broad decisionmaking, and can provide the foundation for the efficient review of specific tiered implementing actions.

(c) Ongoing or previously planned and approved actions that are within the scope of a programmatic review may continue during the programmatic review period, so long as the criteria at 40 CFR 1506.1(c) are met.

(d) The identification of significant impacts in a programmatic EIS does not preclude the review of specific implementing actions in an EA that tiers from the programmatic EIS if the implementing actions would not result in new or different significant impacts.