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. and Building Administrator and the issuance of a conditional use permit by the City Council as provided in S'ections 902.30-902.34 of this ordinance and subject to the following provisions: a. Residences ~ Where existing streets. utilities. and sm~l lot sizes preclude the use of fill. other methods of elevating the first floor (including basements) above the regulatory flood protection elevation may be authorized. Residences that do not have access at or above an elevation not more than one foot below tue ,regulatory flood protection elevation shall not be permitted unless granted a variance by the Board of Adjustment In granting a variance, the Board shall specify limitations on period of use or occupancy of the residence. b. Residential Basements - Upon the granting of a waiver by the Federal Insurance Administration to the City or to the State of Minnesota. residential basements below the regulatory flood protection elevation may be authorized only if they are floodproofed to FP-l classification in accordance with the State Building Code. No floor or portion of a residence below the regulatory flood protection elevation may be used for hmnan occupancy. . c. Other Structures - Commercial, manufacturing and industrial structures shall ordinarily be elevated on fill so that their first floor (including basement) is above the regulatory flood protection elevation but may 1n special circumstances be floodproofed in accordance with the State Building Code. Any space in such structure that is not elevated to above the regulatory flood protection elevation shall be floodproofed to FP-l or FP-2 classification in accordance with the State Building Code. Spaces floodproofed to FP-3 or FP-4 classifications shall not be permitted prior to changes in Federal Insurance Administration regulations that would allow such uses. 3. Standards For Flood Fringe Conditional U8e~. a. Commercial Uses - Accessory land uses. such as yards, railroad tracks, and parking lots may be at elevations lower than the flood protection elevation. However, a permit for such facilities to be used by the general public shall not be granted, in the absence of an adequate local flood warning system, if the area is inundated to a depth greater than two feet or subjected to flood velocities greater than four feet per second upon the occurrence of the regional flood. b. Manufacturing and Industrial Uses - Measures shall be taken to ~n1mize interference with normal plant operations especially for streams having protracted flood durations. Certain accessory land uses such as yards and parking lots may be at lower elevations subject to the requirements set forth in Section 902.22(3)(a) above. In reviewing permit applications, the City shall give due consideration to needs of industries whose business requires that they be located in floodplain areas. . c. Utilities, Railroad Tracks. Streets and Bridges - Public utility facilities, roads, railroad tracks, and bridges within the floodplain shall be designed to minimize increases in flood elevations and shall be compatible with local comprehensive floodplain development plans. Protection to the regulatory flood protection elevation shall be provided where failure or interruption of these public facilities would result in danger to the public 7. " ,',',' "