§1502.9. Processing of requests. — Inbound Citations

(k) Departmental officials shall supplement a draft EIS whenever an alternative which is substantially different from those discussed in the draft is under consideration or when the draft is otherwise out of date. A final EIS shall be supplemented when a substantial change is made in the proposed action or when significant new information on the environmental impacts comes to light. A supplemental EIS should be prepared, circulated and approved in accordance with the provisions of § 1502.9 of the CEQ Regulations. No supplemental EIS need be prepared when the final decision on the action in question has already been made. If there are reasons not to prepare a supplemental EIS when one ordinarily would be called for, the responsible action officer should consult with the Office of Environmental Quality and Transboundary Issues , which shall consult with the Council on Environmental Quality on the matter.