33 U.S.C. § 2213a: Treatment of certain benefits and costs

(a) In generalIn the case of a flood risk management or coastal storm risk management project in a region of moderate or high seismic hazard, for the purpose of a benefit-cost analysis for the project, the Secretary shall not include in that analysis any additional design and construction costs resulting from addressing seismic concerns. (b) Savings provisionExcept with respect to the benefit-cost analysis, the additional costs referred to in subsection (a) shall be—(1) included in the total project cost; and (2) subject to cost-share requirements otherwise applicable to the project.