(A) Located within the special flood hazard areas established in § 154.07, are areas designated as shallow flooding areas. 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. In addition to § 154.40, all new construction and substantial improvements of all structures shall have the reference level elevated to:
(1) At least as high as the depth number specified on the Flood Insurance Rate Map (FIRM), in feet, plus a freeboard of two feet, above the highest adjacent grade; or
(2) At least two feet above the highest adjacent grade plus a freeboard of two feet if no depth number is specified.
(B) (1) All new construction and substantial improvements of all non-residential structures may, in lieu of elevation, floodproof to the same depths as listed above so that any space below that level shall be 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.
(Art. 5, G) (Ord. passed 11-14-2005)