For activities that propose to alter sand dunes or mangrove
stands in coastal high-hazard areas (Zone V), the applicant shall
submit an engineering analysis that demonstrates that the proposed
alteration will not increase the potential for flood damage.
When additional hydrologic, hydraulic or other engineering data,
studies, and additional analyses are submitted to support an application,
the applicant has the right to seek a letter of map change from FEMA
to change the base flood elevations, change floodway boundaries, or
change boundaries of flood hazard areas shown on FIRMs, and to submit
such data to FEMA for such purposes. The analyses shall be prepared
by a Florida licensed engineer in a format required by FEMA. Submittal
requirements and processing fees shall be the responsibility of the
applicant.