All new or substantially improved no non-residential buildings shall have the lowest floor (including basement) elevated a minimum of one foot above the 100-year flood level, or together with attendant utility and sanitary systems, be flood-proofed to such a level. When flood-proofing is utilized, a professional engineer registered in the state shall certify that the flood-proofing methods used are adequate to withstand the flood depths, pressures, velocities, impact and uplift forces and other factors associated with the 100-year flood; and that the structure below the 100-year flood level is water-tight with walls substantially impermeable to the passage of water. A record of the certification indicating the specific elevation (in relation to National Geodetic Vertical Datum) to which any structures are flood- proofed shall be maintained by the Administrator.
(Prior Code, Art. 15, Ch. 1, § III) (Ord. passed 5-6-1997)