In the case of existing structures consisting of multifamily housing and row houses, the Secretary shall seek consultation with the Administrator of the Federal Emergency Management Agency, shall provide for alternative forms of mitigation (apart from elevation), and shall exempt from the requirement under subparagraph (A) any such structure that meets the standards for such an alternative form of mitigation. (C) Definitions For purposes of subparagraph (A), the terms area having special flood hazards , newly constructed , substantial damage , substantial improvement , and base flood level have the same meanings as under the Flood Disaster Protection Act of 1973 and the National Flood Insurance Act of 1968 ( 42 U.S.C. 4001 et seq.). (f) Administration In administering any amounts made available for assistance under this section, the Secretary— (1) may not allow a grantee to use any such amounts for any purpose other than the purpose approved by the Secretary in the plan or amended plan submitted under subsection (c)(1) to the Secretary for use of such amounts