A. General Standards:
1. Drainage: Adequate drainage paths around structures on slopes shall be provided in an AE zone or an AH zone to guide floodwaters around and away from proposed structures.
2. Grading: Any site work in excess of ten (10) cubic yards of cut or fill will require a detailed grading permit. All grading shall be done so as to minimize impacts and maintain compensatory storage within all special flood hazard areas. Depending on the extent and nature of the grading, a FES may be required along with an LOMC.
B. Residential Structure: All new construction and/or substantial improvement of residential structures proposed within an AE zone or an AH zone must comply with the following standards:
1. Lowest Floor Elevation: Residential structures shall have the lowest floor (including basement and/or crawl space) elevated to at least one and a half feet (1.5') above BFE, confirmed by elevation certificates as set forth in subsection 8-3F-6D2 of this article.
C. Nonresidential Structure: All new construction and/or substantial improvement of any commercial, industrial, or other nonresidential (accessory or agricultural) structure within an AE or an AH zone shall either be elevated or floodproofed in compliance with the following standards:
1. Elevation: If the structure is not going to be floodproofed, elevation certificates are required as set forth in subsection 8-3F-6D2 of this article that certify compliance with the following standards:
a. The lowest floor (including basement and/or crawl space) shall be elevated to at least one and a half feet (1.5') above BFE.
D. Subdivision And/Or Manufactured Home Park: An FES, as detailed in subsections 8-3F-6D4 and 8-3F-7A8 of this article, shall be submitted concurrently with an application for a subdivision or manufactured home park within an AE zone or an AH zone. The applicant and/or owner shall submit a signed copy of an LOMC prior to approval of the final plat or prior to issuance of any building permit within a subdivision or manufactured home park.
E. Manufactured Home: A manufactured home placed or substantially improved within an AH zone or an AE zone requires elevation certificates as set forth in subsection 8-3F-6D2 of this article that demonstrate compliance with the following standards:
1. A manufactured home shall be installed using methods and practices which minimize flood damage. Said methods and practices shall include the anchoring of the home to resist flotation, collapse, or lateral movements. Methods of anchoring may include, but are not to be limited to, use of over the top or frame ties to ground anchors in addition to any applicable anchoring requirements for resisting wind forces. Other anchoring techniques are described in the FEMA publication "Manufactured Home Installation In Flood Hazard Areas"; and
2. A manufactured home shall be elevated so the lowest floor (including basement and/or crawl space) is elevated to at least one and a half feet (1.5') above BFE confirmed by an elevation certificate.
F. Recreational Vehicle: Any recreational vehicle placed on property within an AE zone or an AH zone shall meet the following additional standards:
1. The recreational vehicle shall be on site for fewer than one hundred and eighty (180) consecutive days; and
2. The recreational vehicle shall be fully licensed and ready for highway use, be on its wheels or jacking system, be attached to the site only by quick disconnect type utilities and security devices, and have no permanently attached additions; or
3. The recreational vehicle shall meet the elevation and anchoring requirements set forth in subsection E.1 of this section.
G. Pit, Mine Or Quarry: Approval of an FES as set forth in subsection 8-3F-6D4a of this article, shall be required as a condition of approval for any proposed pit, mine or quarry. The FES shall demonstrate that the extraction site will be designed to avoid river avulsion. The FES must be approved prior to commencement of the use or breaking ground. Gravel mining operations or excavations are not permitted within one hundred feet (100') of the top of river bank regardless of floodway or floodplain designation. Material stockpiles and permanently installed structures shall not be located within the regulatory floodway. (Ord. 835, 12-3-2014; amd. Ord. 848, 12-9-2015; Ord. 914, 6-10-2020)