; 132 Stat. 3782) is amended— (1) in paragraph (3)— (A) in subparagraph (B), by inserting project purposes, including before storage capacity ; and (B) in subparagraph (C), by striking preliminary ; (2) by striking paragraph (9); (3) by redesignating paragraphs (4) through (8) as paragraphs (6) through (10), respectively; and (4) by inserting after paragraph (3) the following: (4) Justification In determining the economic justification of a sediment management plan under paragraph (2), the Secretary shall— (A) measure and include flooding, erosion, and accretion damages both upstream and downstream of the reservoir that are likely to occur as a result of sediment management within the reservoir compared to the damages that are likely to occur if the sediment management plan is not implemented; and (B) include lifecycle costs and a 100-year period of analysis. (5) Implementation As part of a sediment management plan under paragraph (2), the Secretary may carry out sediment removal activities at reservoirs owned and operated by the Secretary in the Upper Missouri River Basin, or at reservoirs for which the Secretary has flood control responsibilities under section 7 of the Act of December 22, 1944 (commonly known as the Flood Control Act of 1944 ) (58 Stat. 890, chapter 665; 33 U.S.C. 709 ), in the Upper Missouri River Basin, in accordance with section 602 of the Water Resources Development Act of 1986 (100 Stat. 4148