Located within the areas of special flood hazard established in §§ 18.12.010 and 18.12.020 are areas designated as floodways. Since the floodway is an extremely hazardous area (due to the velocity of flood waters which carry debris and the potential for erosion), the following provisions shall apply:
(A) No encroachments, including fill, new construction, substantial improvements and other development shall be allowed unless certification by a registered professional engineer or architect is provided demonstrating that encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge;
(B) All new construction and substantial improvements which have been certified as provided in division (A) above shall comply with all applicable flood hazard reduction provisions of this chapter.
(`78 Code, § 18.20.050.) (Ord. 1886 § 1 (part), 1988.)