(a) As soon as practicable after the determination is made to prepare an EA or EIS, TVA will determine whether inviting other Federal, Tribal, State, or local agencies to participate in the preparation of the EA or EIS as lead, joint lead, or cooperating agencies is appropriate (NEPA sec. 107(a), 42 U.S.C. 4336a,and. 111, 42 U.S.C. 4336e). TVA will typically serve as the lead Federal agency for TVA actions. Any designation of lead federal agency will be made in accordance with NEPA sec. 107, U.S.C. 4336a.

(b) If TVA is participating with other Federal agencies in a NEPA review, TVA will cooperate with the other Federal agency(ies) to designate agency roles (e.g., lead agency, joint lead agency, cooperating agency).

(c) When participating with other Federal agencies, TVA will, to the extent practicable, work with the other Federal, Tribal, State, or local agencies to prepare a single environmental document.