Located within the areas of special flood hazard established in this article are areas designated as AO Districts. These areas have special flood hazards associated with base flood depths of one to three feet where a clearly defined channel does not exist and where the path of flooding is unpredictable and indeterminate; therefore, the following provisions apply within AO Districts.
(A) All new construction and substantial improvements of residential structures shall have the lowest floor (including basement) elevated above the highest adjacent grade at least as high as one-foot above the depth number specified in feet on the FIRM (at least two feet if no depth number is specified).
(B) All new construction and substantial improvements of non-residential structures shall:
(1) Have the lowest floor elevated above the highest adjacent grade at least as high as one-foot above the depth number specified in feet on the FIRM (at least two feet if no depth number is specified); or
(2) Together with attendant utility and sanitary facilities be completely flood proofed to or above that level so that any space below that level is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. Such certification shall be provided to the Development Services Director as set forth in § 25-19-18(B)(7) of this article.
(C) Adequate drainage paths around structures on slopes shall be required in order to guide floodwaters around and away from proposed structures.
(Ord. 3639, passed - -2000)