; and (II) (aa) issue guidance with respect to the matters described in items (aa) and (bb) of subclause (I); or (bb) use the levee analysis and mapping procedure of the Federal Emergency Management Agency, as in effect on the date of enactment of this paragraph, for purposes of updating flood insurance rate maps and establishing rates for flood insurance under the National Flood Insurance Program, working with established Local Levee Partnership Teams or their equivalent for verification of accurate results. (ii) Rate for areas without sufficient data With respect to a structure that is located in an area described in clause (i), and for which the Administrator does not have sufficient data to assess risk, the Administrator may not increase the rates for flood insurance under the National Flood Insurance Program for that structure until the Administrator— (I) carries out clause (i) with respect to that area; and (II) makes available to all parties affected by the increased rate the data on which the Administrator is relying in establishing that increased rate. (C) Mandatory purchase requirement for levee systems In any area in which the pertinent levee system meets the minimum design, operation, and maintenance standards described in section 65.10 of title 44, Code of Federal Regulations, or any successor regulation, the Administrator may not— (i) designate the levee-protected area a special flood hazard area