Ordinance 2012-1625 - Laserfiche WebLink

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structures. 3. Structures will be firmly anchored as required by this section to prevent the structure from floating away and thus threatening to further restrict bridge openings and other restricted sections of the stream or river. 4. The lowest floor, including the basement floor, of any structure to be erected, constructed, reconstructed, or moved on the floodplain shall be constructed on fill at least one foot above the elevation or level required by this section for the particular area and use specified, and the fill shall extend at such elevation at least 15 feet beyond the limits of any structure or building erected thereon. C. Fills or deposits. 1. Any fill or deposit of materials shall comply with subsection A of this section. 2. The fill or deposit of materials shall have some beneficial purpose and the amount thereof will not be greater than is necessary to achieve that purpose, as demonstrated by a plan submitted by the owner showing the final dimensions of the proposed fill or other material and the use to which the filled land will be put. 3. The fill or deposit of materials does not imprudently reduce the flood-storage capacity of the waterway, unless a permit has been granted by the board of adjustment and the other requirements of this section have been met; and the fill or deposit of materials does not encroach on the portion of the floodplain which would have significant flow during the flood, and which for that reason would help convey the floodwaters. Any fill that reduces the hydraulic capacity requires appropriate hydraulic studies and a review of the urban impact of such reduction. 4. The fill or other materials will be protected against erosion by riprap, strong vegetative cover or bulkheading. D. Storage of certain materials. The storage or processing of materials which are buoyant, flammable, toxic, or explosive, or which in times of flooding could be injurious to human, animal, or plant life shall be at or above the flood protection elevation for the particular area, or shall be floodproofed in accordance with the standards and practices specified in section 17.56.250. Solid waste disposal facilities, such as junkyards or areas for the dumping of refuse, shall also require review and approval of the planning commission and the city council. E. General standards. I. Anchoring. a. All new construction and substantial improvements shall be anchored to prevent floatation, collapse, or lateral movement of the structure and capable of resisting the hydrostatic and hydrodynamic loads, including the effects of buoyancy. Ordinance No. 1625,Series 2012 Page 15 of 31 15