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results of the test showing compliance shall be retained in the <br /> permit file. <br /> 2. Fill shall extend ten (10) feet beyond the foundation of the <br /> structure before sloping below the BFE <br /> 3. Fill shall be protected against erosion and scour during <br /> flooding by vegetative cover, riprap, or bulk heading. If <br /> vegetative cover is used,the slopes shall be no steeper than 3' <br /> horizontal to l' vertical. <br /> 4. Fill shall not adversely affect the flow of surface drainage from <br /> or onto neighboring properties. <br /> 5. Fill shall be composed of clean granular or earthen material. <br /> (v) A residential structure may be constructed using a stem wall foundation <br /> (also called chain wall, raised-slab-on-grade, and slab-on-stem-wall- <br /> with-fill). Any backfilled stem wall foundation(also called chain wall, <br /> raised-slab-on-grade, and slab-on-stem-wall-with-fill) must be <br /> backfilled with compacted structural fill, concrete, or gravel that <br /> supports the floor slab. No flood openings are required for this type of <br /> construction. <br /> (c) Non-Residential Construction. <br /> (i) New construction or substantial improvement of any non-residential <br /> structures (excludes accessory structures) shall meet provisions <br /> described in Section 6-38.5(1) and applicable general standards <br /> described in Section 6-38.5(2). <br /> (ii) In Zone A and Zone AE,new construction,or substantial improvement <br /> of any commercial, industrial, or non-residential structure (excludes <br /> accessory structures) shall either have the lowest floor, including <br /> basement, elevated to or above the FPG or be floodproofed to or above <br /> the FPG. Should solid foundation perimeter walls be used to elevate a <br /> structure, openings sufficient to facilitate the unimpeded movements of <br /> floodwaters shall be provided in accordance with the standards of <br /> Section 6-38.5(3)(c)(iii). Should fill be used to elevate a structure, the <br /> standards of Section 6-38.5(3)(c)(iv)must be met. <br /> (iii)Fully enclosed areas formed by foundation and other exterior walls <br /> below the flood protection grade shall meet the following requirement. <br /> 1. Designed to preclude finished living space and designed to <br /> allow for the automatic entry and exit of floodwaters to <br /> equalize hydrostatic flood forces on exterior walls. Flood <br /> openings must be designed and installed in compliance with <br /> criteria set out in FEMA Technical Bulletin 1. Flood openings <br /> must be designed and certified by a registered design <br /> professional (requires supporting engineering certification or <br /> make/model specific ICC-ES Report), or meet the following <br /> criteria for non-engineered flood openings: <br /> A. Provide a minimum of two openings on different sides of <br /> an enclosure. If more than one enclosed area is present, <br /> each must have openings on exterior walls (having a total <br /> net area of not less than one square inch for every one <br /> square foot of enclosed area). <br /> B. The bottom of all openings shall be no more than one foot <br /> above the higher of the fmal interior grade (or floor) and <br /> 30 <br />