18 CFR 2.13: Design and construction.

(a) The Commission recognizes the importance of protecting and enhancing natural, historic, scenic, and recreational values at projects licensed or proposed to be licensed under the Federal Power Act.

(b) In furtherance of these policies, the Commission will not (1) permit the amendment of any license for the purpose of construction of additional facilities or (2) authorize the disposition of any interest in project lands for construction of any type, unless a showing is made that the construction will be designed to avoid or minimize conflict with the natural, historic, and scenic values and resources of the project area.