Agenda - Planning Commission - 10/15/2015

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(3) For all subdivisions in the floodplain, the Floodway and Flood Fringe District boundaries, the regulatory flood protection elevation, and the required elevation of all access roads must be clearly labeled on all required subdivision drawings and platting documents. (4) In the General Floodplain District, applicants must provide the information required in Section 117-185 (b) to determine the regional flood elevation, the Floodway and Flood Fringe District boundaries and the regulatory flood protection elevation for the subdivision site. Sec. 117-187 Public Utilities, Railroads, Roads, and Bridges. (a) Public Utilities. All public utilities and facilities such as gas, electrical, sewer, and water supply systems to be located in the floodplain must be floodproofed in accordance with the MN State Building Code or elevated to the regulatory flood protection elevation. (b) Public Transportation Facilities. Railroad tracks, roads, and bridges to be located within the floodplain must comply with Sections 117-183 and 117-184. These transportation facilities must be elevated to the regulatory flood protection elevation where failure or interruption of these facilities would result in danger to the public health or safety or where such facilities are essential to the orderly functioning of the area. Minor or auxiliary roads or railroads may be constructed at a lower elevation where failure or interruption of transportation services would not endanger the public health or safety. (c) On-site Water Supply and Sewage Treatment Systems. Where public utilities are not provided: (1) On-site water supply systems must be designed to minimize or eliminate infiltration of flood waters into the systems; and (2) New or replacement on-site sewage treatment systems must be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters and they must not be subject to impairment or contamination during times of flooding. Any sewage treatment system designed in accordance with the state's current statewide standards for on-site sewage treatment systems is considered to be in compliance with this Section. Sec. 117-188 Manufactured Homes, Manufactured Home Parks, and Recreational Vehicles. (a) Manufactured Homes. New manufactured home parks and expansions to existing manufactured home parks are prohibited in any floodplain district. For existing manufactured home parks or lots of record located in a floodplain district, the placement of new or replacement manufactured homes will be treated as a new structure and are subject to the following requirements: (1) Placement or replacement of manufactured home units is prohibited in the Floodway District. (2) If allowed in the Flood Fringe District, placement or replacement of manufactured home units is subject to the requirements of Section 117-184 and the following standards. a. New and replacement manufactured homes must be elevated in compliance with Section 117- 184 and must be securely anchored to an adequately anchored foundation system that resists flotation, collapse and lateral movement. Methods of anchoring may include, but are not limited to, use of over -the -top or frame ties to ground anchors. This requirement is in addition to applicable state or local anchoring requirements for resisting wind forces. b. New or replacement manufactured homes in existing manufactured home parks must meet the vehicular access requirements for subdivisions in 117-186 (a)(2). (b) Recreational Vehicles. New recreational vehicle parks or campgrounds and expansions to existing recreational vehicle parks or campgrounds are prohibited in any floodplain district. Placement of recreational vehicles in existing recreational vehicle parks or campgrounds in the floodplain must meet the exemption criteria below or be treated as new structures meeting the requirements of this ordinance.