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<br /> November 6, 2007 <br /> Page 12 <br /> be elevated to the borderine base flood elevation or depth <br /> number plus a freeboard of at least one foot. <br /> For nonresidential new construction, improvements to repetitive <br /> loss structures, and substantial improvements, the lowest floor <br /> shall be elevated or floodproofed to the borderine base flood <br /> elevation or depth number plus a freeboard of at least one foot. <br /> If the lowest floor is below the bordering base flood elevation or <br /> depth number plus the required freeboard, then a currently <br /> licensed professional engineer or architect in the State of Hawaii <br /> shall develop and/or review structural design, specifications and <br /> plans for construction and shall certify that the design and <br /> methods of construction are in accordance with accepted <br /> standards of practice for the structure together with attendant <br /> utility and sanitary facilities such that: <br /> The structure is watertight below the borderine base <br /> flood elevation or depth number plus the required <br /> freeboard. <br /> The walls are substantially impermeable to the <br /> passage of water. <br /> The structural components are capable of resisting <br /> hydrostatic and hydrodynamic loads and the effects of <br /> buoyancy. <br /> New construction, improvements to repetitive loss structures, <br /> and substantial improvements, shall be required to provide a <br /> drainage path around and away from proposed structures. <br /> When topographical or ground elevation data, submitted by a <br /> civil engineer or land surveyor currently licensed in the State of <br /> Hawaii, shows that the proposed building site is higher than the <br /> elevation requirements of paragraph 27-18(b)(1) and 27-18(b)(2), <br /> the flood plain regulations of this chapter shall not be applicable. <br /> This provision, i.e. subsection 27-18(b), upon approval of this <br /> ordinance, shall take effect on June 1, 2008. <br /> (c) Other areas: Zone X (shaded <br /> (1) For new construction, the lowest floor shall be elevated at least Itwe <br /> feetl one foot above the highest adjacent grade of the building <br /> footprint. <br /> For concrete basements with habitable room(sl. the sill plate shall be <br /> at least one foot above the highest adjacent grade of the building <br /> footprint.. <br /> New construction, improvements to repetitive loss structures, and <br /> substantial improvements, shall be required to provide a drainage <br /> path around and away from proposed structures. <br /> <br />