; and (B) formulate and implement administrative, policy, and procedural mechanisms to enable the agency to ensure completion of the environmental review process in a timely, coordinated, and environmentally responsible manner. (2) Single NEPA document (A) In general To the maximum extent practicable and consistent with Federal law, all Federal permits and reviews for a project shall rely on a single environmental document prepared under the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) under the leadership of the Secretary. (B) Use of document (i) In general To the maximum extent practicable, the Secretary shall develop an environmental document sufficient to satisfy the requirements for any Federal approval or other Federal action required for the project, including permits issued by other Federal agencies. (ii) Cooperation of participating agencies In carrying out this subparagraph, other participating agencies shall cooperate with the lead agency and provide timely information. (C) Treatment as participating and cooperating agencies A Federal agency required to make an approval or take an action for a project, as described in this paragraph, shall work with the Secretary to ensure that the agency making the approval or taking the action is treated as being both a participating and cooperating agency for the project. (D) Exceptions The Secretary may waive the application of subparagraph (A) with respect to a project if— (i) the project sponsor requests that agencies issue separate environmental documents; (ii) the obligations of a cooperating agency or participating agency under the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) have already been satisfied with respect to the project