; or (B) the Secretary from authorizing the establishment of a new utility facility right-of-way within an existing designated transportation and utility corridor referred to in paragraph (1) in accordance with— (i) the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) and other applicable laws; and (ii) subject to such terms and conditions as the Secretary determines to be appropriate; and (3) except as provided in the amendment made by subsection (b), modifies the management of the Conservation Area pursuant to section 605 of the Sloan Canyon National Conservation Area Act ( 16 U.S.C. 460qqq–3 ).