(A) Where land proposed for subdivision is deemed environmentally sensitive by the city, due to the existence of wetlands, drainage ways, water courses, floodable areas of steep slopes, the design of said subdivisions shall clearly reflect all necessary measures of protection to ensure against adverse environmental impact.
(B) No land shall be subdivided which is unsuitable for the reason of flooding, inadequate drainage, water supply, or sewage treatment facilities. All lots within the flood plain districts shall contain a building site at or above the regulatory flood protection elevation. All subdivisions shall have water and sewage treatment facilities that comply with the provisions of this chapter and have road access both to the subdivision and to the individual building sites no lower than two feet below the regulatory flood protection elevation. For all subdivisions in the flood plain, the floodway and flood fringe boundaries, the regulatory flood protection elevation and the required elevation of all access roads shall be clearly labeled on all required subdivision drawings and platting documents.
(C) The Federal Emergency Management Agency (FEMA) has established criteria for removing the special flood hazard area designation for certain structures properly elevated on fill above the 100-year flood elevation. FEMA’s requirements incorporate specific fill compaction and side slope protection standards for multi-structure or multi-lot developments. These standards should be investigated prior to the initiation of site preparation if a change of special flood hazard area designation will be requested.
(D) Based upon the necessity to control and maintain certain sensitive areas, the city shall determine whether the protection will be accomplished through lot enlargement or dedication of those sensitive areas in the form of outlots.
(E) In general, measures of protection shall include design solutions which allow construction and grading involving a minimum of alteration to sensitive areas. Where these areas are to be incorporated into lots within the proposed subdivision, the subdivider shall be required to demonstrate that the proposed design will not require construction on slopes over 18% or result in significant alteration to the natural drainage system such that adverse impacts cannot be contained within the plat boundary.
(Ord. 19-2, passed 4-11-2005) Penalty, see § 153.999