Ord 2012-029 - Laserfiche WebLink

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Certain areas located within areas of special flood hazard established in section 39.021, are designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of floodwaters that carry debris potential projectiles and have significant erosion potential, the following provisions apply: (1) Compliance with standards in section 39.043. (2) Prohibition on encroachments, including fill new construction substantial improvements and other developments with the regulry floodway unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment would not result in any increase in flood levels within the community duringL the occurrence of the base flood discharge. Sec. 39.046 Existin! Structures (1) Structures and uses of structures which lawfully exist prior to the effective date of this ordinance and which do not conform to this Article may be continued subject to the following conditions: (a) In floodway. Existing structures and uses within a floodway shall not be expanded or enlarged unless the effect of proposed expansion or enlargement does not cause an additional increase in floodway elevation during the occurrence of the base flood discharge, as certified by a re istered professional engineer. (b) Modifications to existing structure. Any repair, reconstruction or improvement of an existing structure within a floodplain which constitutes substantial improvement shall be undertaken only in full compliance with this Article and the owner shall be required to obtain a floodplain permit before repair, reconstruction or improvement shall begin. Sec. 39.047. Critical Facilities. Construction of new Critical Facilities shall be to the extent possible located outside the limits of the SFHA, preferably outside the 0.2% annual chance floodplain Construction of new Critical Facilities may be permissible within the SFHA if feasible alternative sites are unavailable. Critical Facilities constructed within the SFHA shall have the lowest floor elevated 3.0 feet above the base flood elevation at the site. Flood proofing and sealing measures must be taken to ensure that toxic substances will not be displaced by or released into floodwaters Access routes elevated to or above the level of the base flood elevation shall be provided to all Critical Facilities to the maximum extent possible. 24