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<br />Rule 9. Desiqnation and Approval of Floodplain Information: <br /> <br />A. Desianation and Approval Reauirements. The Board will <br />designate and approve floodplains and storm or floodwater <br />runoff channel~ by the adoption of written resolutions b33ed <br />only upon such t oodplain information as the Board determines <br />meets the standards set forth in rule 5 or rule 6, as <br />applicable, with 60nsideration of the effects of dams and <br />levees being subject to the criteria of rules 7 and 8, <br />respectively. <br /> <br />B. Base Flood. The IOO-year flood shall be the basis for all <br />designations and approvals by the Board, for zoning purposes, <br />of floodplains and of storm or floodwater runoff channels in <br />Colorado. <br /> <br />C. Conditions. All designations and approval~ of approximate <br />floodplain information by the Board shall 5Jecify that the <br />community may not exercise its zoning powers based on the <br />Board's designation unless it includes in its zoning ordinances <br />or regulations the requirement that there be a case-by-case <br />review with a detailed hydrologic and hydraulic investigation <br />for rezoning and development activities within the approximate <br />IOO-year floodplain. <br /> <br />D. Process for Takina Desianation and Approval Actions. The <br />Board may consider the designation and approval of floodplain <br />information either by request of a community or by acting on <br />its own initiative. <br /> <br />1. Consideration at a Communi tv's Reauest. The Board shall <br />consider designation and approval of floodplain information <br />upon written request from the governing body of any <br />community having jurisdiction in the area where the <br />floodplain information is applicable. The letter of <br />request shall identify the report title, date, author or <br />agency which prepared the report, stream name(s), upstream <br />and downstream limits of the stream reach(es) to be <br />designated, stream length(s) in miles, type of designation <br />requested (detailed or approximate), and any other relevant <br />i nformat ion. Such request must be recei ved by t~e Board at <br />~ 1 Efa.st 30 days prior to~ the Board meeting at which <br />consideration of designation and approval is requested.. <br /> <br />-22- <br />