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ORDINANCE NO. 2003-006 standards in subsections (2)(b)2., (2)(b)3., (2)(b)5., (2)(b) I I., (2)(b) I -a, (2)(b) 14.a and (2)(b)14.b - . of this section. However, in no case shall such development within a flood hazard zone be less than eighteen (18) inches above the crown of the road or elevation required by the Indian River County Wealth Department of Health. If base flood data are not available, or cannot be estimated by the county, then new buildings, together with mechanical and electrical equipment, must be elevated at least three (3) feet above highest adjacent natural grade. Where base flood elevation data are utilized, within Zone A on the FIRM, the community development department shall: a. Obtain the elevation (in relation to mean sea level) of the lowest floor (including basement) of all new and substantially improved structures, and; b. Obtain, if the structure has been flood -proofed in accordance with subsection (2)(b)3.b of this section, the elevation (in relation to mean sea level) to which the structure was flood -proofed, and; Maintain a record of all such information. 10. The public works department shall notify adjacent communities and the state coordinating office prior to any alteration and relocation of a water course in riverine situations, and submit copies of such notifications to the administrator of the Federal Insurance Administration. 1 1. The public works department shall ensure that the flood -carrying capacity within the altered or relocated portion of any watercourse is maintained. The velocity of the base flood must not be adversely altered on any watercourse. 12. The community development department shall require that all manufactured homes to be placed within Zone A on the FIRM shall be installed using methods and practices which minimize flood damage. For purposes of this requirement, manufactured homes must be elevated and anchored to resist floatation, collapse, or lateral movement. Methods of anchoring may include, but are not to be limited to, use of over -the -top or frame ties to ground anchors. This requirement is in addition to applicable State and other local anchoring requirements for resisting wind forces. (b) Zones A99, AE, A, AH, and AO zone requirements. All development within zones designated A99, AE, A, AH, and AO on the county FIRM shall meet all the standards of Zone A requirements set out in section 930.07(2)(a)1. through 12. above. All new construction and substantial improvements of residential structures within Zones A99, AE, and AH on the county FIRM shall have the lowest floor (including basement) and electrical equipment, heating; equipment, ventilation 3 Coding: Words in stfike through are deletions from existing law. Words underlined are additions. \\Fileserver\Public\Community Development\Users\KOLANDWIiscellaneous\LDR\930.07 mech equip freeboaraw30.07 LDR amd 011603.DOC