(A) Permitted Uses.
(1) Any use permitted in the Floodway Overlay District shall be permitted in the Floodway Fringe Overlay District. No use shall be permitted in the district unless the standards of the prior section are met.
(B) Standards for the Floodway Fringe Overly District
(1) Require new construction or substantial improvements of residential structures to have the lowest floor, including basement, elevated to or above two feet above the base flood elevation.
(2) Require new construction or substantial improvements of nonresidential structures to have the lowest floor, including basement, elevated to or above one foot above the base flood elevation or, together with attendant utility and sanitary facilities, to be flood-proofed so that below such a level the structure is water tight 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. A registered professional engineer or architect shall certify that the standards of this subsection are satisfied.
(3) Require for all new construction and substantial improvements that fully enclosed areas below the lowest floor that are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must either be certified by a registered professional engineer or architect or meet or exceed the following minimum criteria: A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided. The bottom of all openings shall be no higher than one foot above grade. Openings may be equipped with screens, louvers, valves, or other coverings or devices provided that they permit the automatic entry and exit of floodwaters.
(4) Within AH Zones adequate drainage paths around structures on slopes shall be required in order to guide floodwaters around and away from proposed structures.
(5) Manufactured Homes:
(a) All manufactured homes shall be anchored to resist flotation, collapse, or lateral movement. Manufactured homes must be anchored in accordance with local building codes or FEMA guidelines. In the event that over-the-top frame ties to ground anchors are used, the following specific requirements (or their equivalent) shall be met:
(i) Over-the-top ties be provided at each of the four corners of the manufactured home, with two additional ties per side at intermediate locations and manufactured homes less than 50 feet long requiring one additional tie per side;
(ii) Frame ties be provided at each corner of the home with five additional ties per side at intermediate points and manufactured homes less than 50 feet long requiring four additional ties per side;
(iii) All components of the anchoring system be capable of carrying a force of 4,800 pounds; and
(iv) Any additions to the manufactured home be similarly anchored.
(b) Require that all manufactured homes to be placed within Zones A 1-30, AH, and AE on the community’s FIRM, be elevated on a permanent foundation such that the lowest floor of the manufactured home is at or above the base flood elevation, and be securely anchored to an adequately anchored foundation system in accordance with the provisions of this section.