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2. All new construction and substantial improvements shall be constructed using <br />methods and practices that minimize flood damage. <br />3. All new construction and substantial improvements shall be constructed with <br />electrical, heating, ventilation, plumbing and air conditioning equipment and other <br />service facilities that are designed and/or located so as to prevent water from entering <br />or accumulating within the components during conditions of flooding. <br />4. Require within Zones AH or AO adequate drainage paths around structures on <br />slopes to guide floodwaters around and away from proposed structures. <br />C. Elevation and Floodproofing. <br />1. New construction and substantial improvement of any structure shall have the lowest <br />floor, including basement, elevated to or above the base flood elevation. Nonresidential <br />structures may meet the standards in Section 17.08.15003. Upon completion of the <br />structure the elevation of the lowest floor, including basement shall be certified by a <br />registered professional engineer or surveyor, or verified by the community building <br />inspector to be properly elevated. Such certification or verification shall be provided to the <br />Floodplain Administrator. <br />2. New construction and substantial improvement of any structure in Zone AO shall have <br />the lowest floor, including basement, elevated above the highest adjacent grade at least <br />as high as the depth number specified on the FIRM, or at least two feet if no depth <br />number is specified. Nonresidential structures may meet the standards in Section <br />17.08.15003. Upon the completion of the structure the elevation of the lowest floor <br />including basement shall be certified by a registered professional engineer or surveyor, or <br />verified by the community building inspector to be properly elevated. Such certification or <br />verification shall be provided to the floodplain administrator. <br />3. Nonresidential construction shall either be elevated in conformance with Section <br />17.08.15001 or C2 or together with attendant utility and sanitary facilities: <br />a. Be floodproofed so that below the base flood level the structure is watertight <br />with walls substantially impermeable to the passage of water; <br />b. Have structural components capable of resisting hydrostatic and hydrodynamic <br />loads and effects of buoyancy; and <br />c. Be certified by a registered professional engineer or architect that the standards <br />of this subsection are satisfied. Such certifications shall be provided to the <br />Floodplain Administrator. <br />4. Require, for all new construction and substantial improvements, that fully enclosed <br />areas below the lowest floor that are subject to flooding shall be designed to <br />automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry <br />and exit of floodwaters. Designs for meeting this requirement must either be certified by a <br />registered professional engineer or architect or meet or exceed the following minimum <br />criteria: <br />