An Elevation Certificate is required for all new development regulated by this ordinance. All elevation requirements noted in this ordinance shall be documented using the NFIP Elevation Certificate, FEMA Form 086-0-33, as amended, which shall be certified by a registered Professional Engineer, Architect, or Land Surveyor, and submitted to the Floodplain Administrator. Standards for Areas of Shallow Flooding (Awah Zones, as defined by FEMA).
Located within the areas of special flood hazard established in
§ UDC-4.06.02B are areas designated as shallow flooding. These areas have special flood hazards associated with flood depths of 1 to 3 feet where a clearly defined channel does not exist, where the path of flooding is unpredictable, and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow; therefore, the following provisions apply:
1. All new construction and substantial improvements of residential structures have the lowest floor (including basement) elevated to or above the Base Flood Elevation or the highest adjacent grade at least as high as the depth number specified in feet on the community's FIRM (at least 3 feet if no depth number is specified).
2. All new construction and substantial improvements of nonresidential structures;
a. Have the lowest floor (including basement) elevated to or above the Base Flood Elevation or the highest adjacent grade at least as high as the depth number specified in feet on the City's FIRM (at least 3 feet if no depth number is specified), or
b. Together with attendant utility and sanitary facilities be designed so that below the base specified flood depth in an AO Zone, or below the Base Flood Elevation in an AH Zone, level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads of effects of buoyancy.
3. A registered professional engineer or architect shall submit a certification to the Floodplain Administrator that the standards of this Section, as proposed in 4.06.03. C are satisfied.
4. Require within Zones AH or AO adequate drainage paths around structures on slopes, to guide flood waters around and away from proposed structures.
