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(2) All new construction or substantial improvements shall be constructed by methods and <br /> practices that minimize flood damage; <br /> (3) All new construction or substantial improvements shall be constructed with materials <br /> resistant to flood damage; <br /> (4) All new construction or substantial improvements shall be constructed with electrical, <br /> heating, ventilation, plumbing, and air conditioning equipment and other service facilities <br /> that are designed to be elevated at least one foot above the base flood elevation, so as to <br /> prevent water from entering or accumulating within the components during conditions of <br /> flooding; <br /> (5) All new and replacement water supply systems shall be designed to minimize or <br /> eliminate infiltration of flood waters into the system; <br /> (6) New and replacement sanitary sewage systems shall be designed to minimize or <br /> eliminate infiltration of flood waters into the system and discharge from the systems into <br /> flood waters; and, <br /> (7) On-site waste disposal systems shall be located to avoid impairment to them or <br /> contamination from them during flooding. <br /> (8) Compensating floodplain mitigation will be required for any fill placed below the riverine <br /> base flood elevation and/or riverine 500-year floodplain elevation for any new construction or <br /> substantial improvements, including fill placed in a Coastal AE zone that is below the riverine <br /> 100- or 500-year water surface elevations. <br /> Sec. 94-87. - Specific standards. <br /> In all areas of special flood hazards and moderate flood hazards where base flood <br /> elevation and/or riverine 500-year floodplain elevation data has been provided as set forth in <br /> (i)_section 94-38, (ii) subsection 94-62(8), or (iii) subsection 94-88(3), the following provisions are <br /> required: <br /> (1) Residential construction. New construction and substantial improvement of any <br /> residential structure shall have the lowest floor (including basement), elevated one <br /> foot above the base flood elevation or at or above the riverine 500-year floodplain <br /> elevation, whichever is higher. A registered professional engineer, architect, or land <br /> surveyor shall submit a certification to the floodplain administrator that the standard <br /> of this subsection as proposed in section 94-64(1)(a), is satisfied. <br /> (2) Nonresidential construction. New construction and substantial improvements of <br /> any commercial, industrial or other nonresidential structure shall either have the <br /> lowest floor (including basement) elevated to or above the base flood elevation or to <br /> or above the riverine 500-year floodplain elevation, whichever is higher, or together <br /> with attendant utility and sanitary facilities, be designed so that below the base <br /> flood elevation or the riverine 500-year floodplain elevation, whichever is higher; the <br /> structure is watertight with walls substantially impermeable to the passage of water <br /> 13 <br />