2017-30 Amending City Code Chapter 67.1 Floodplain Protection Provisions

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A. Public health standards must be met for all floodplain development. In addition to the other requirements in this Ordinance the following standards apply: i. No development in the floodplain shall include locating or storing chemicals, explosives, buoyant materials, flammable liquids, pollutants, tanks or any hazardous or toxic materials below the flood protection elevation unless such materials are stored in a floodproofed and anchored storage tank and certified by a professional engineer or floodproofed building constructed according to the requirements of Section 6 of this Ordinance. ii. Public utilities and facilities such as sewer, gas and electric shall be located and constructed to minimize or eliminate flood damage; iii. Public sanitary sewer systems and water supply systems shall be located and constructed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters; iv. New and replacement on-site sanitary sewer lines or waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding. Manholes or other above ground openings located below the flood protection elevation shall be watertight; v. Construction of new or substantially improved critical facilities shall be located outside the limits of the floodplain. Construction of new critical facilities may be permissible within the floodplain if it is specifically documented that no feasible alternative site is available. Critical facilities constructed within the SFHA shall have the lowest floor(including basement) elevated or structurally dry floodproofed to the 500-year flood frequency elevation or three (3) feet above the level of the 100-year flood frequency where a 500-year flood elevation has not been determined. Floodproofing and sealing measures must