; and (C) shall not apply to— (i) any project subject to section 139 of title 23, United States Code; (ii) any project that is a water resources development project of the Corps of Engineers; or (iii) any authorization of the Corps of Engineers if that authorization is for a project that alters or modifies a water resources development project of the Corps of Engineers. (2) Flexibility Any authority provided by this section may be exercised, and any requirement established under this section may be satisfied, for a project, class of projects, or program of projects. (3) Savings provision Nothing in this section— (A) precludes the use of an authority provided under any other provision of law, including for a covered project under title XLI of the FAST Act ( 42 U.S.C. 4370m et seq. ); (B) supersedes or modifies any applicable requirement, authority, or agency responsibility provided under the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) or any other provision of law; or (C) shall be considered an abbreviated authorization or environmental review process for purposes of section 41001(6)(A)(i)(III) of the FAST Act ( 42 U.S.C. 4370m(6)(A)(i)(III) ). (c) Lead agencies (1) Joint lead agencies Nothing in this section precludes an agency from serving as a joint lead agency for a project, in accordance with NEPA. (2) Roles and responsibilities With respect to the environmental review process for a project, the lead agency shall have the authority and responsibility— (A) to take such actions as are necessary and appropriate to facilitate the expeditious resolution of the environmental review process for the project; (B) to prepare any required environmental impact statement or other environmental document, or to ensure that such an environmental impact statement or environmental document is completed, in accordance with this section and applicable Federal law