New construction or substantial improvement of any critical facility is prohibited in all areas of special flood hazard and in all 500-year flood plains, unless all of the following provisions are met.
(A) No feasible alternative site exists for construction of an equivalent facility within the jurisdiction boundaries of Greene County.
(B) The facility has the lowest floor, including basement, of all structures elevated no lower than one foot above the 500-year flood elevation. Should solid foundation perimeter walls be used to elevate a structure, openings sufficient to facilitate the unimpeded movements of flood waters shall be provided. Structures may be flood-proofed to the flood protection level in lieu of elevation provided that all areas of the structure below the required elevation are water-tight with walls substantially impermeable to the passage of water, using structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effect of buoyancy. A registered professional engineer or architect shall certify that the standards of this section are satisfied. If the 500-year flood plain is not identified on the FIRM and the facility is located within 1,000 feet of the boundary of an area of special flood hazard where no base flood data is provided, certification with supporting technical data by a registered professional engineer shall be provided that the facility is elevated or flood-proofed no lower than one foot above the 500-year flood elevation, unless it is certified that the facility located outside the 500-year flood plain.
(C) The facility has at least one access road connected to land outside the 500-year flood plain that is capable of supporting a 4,000-pound vehicle. The top of the access road must be no lower than one half feet the elevation of the 500-year flood.
(Ord. passed - -)