A. Encroachments are prohibited, including fill, new construction, substantial improvements, and other development, unless certification by a registered professional engineer is provided demonstrating through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge.

B. If BMC 17.76.120 is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of BMC 17.76.110 through 17.76.200.

C. Prohibit the placement of any manufactured homes, except in an existing manufactured home subdivision.

D. Construction or reconstruction of residential structures is prohibited within designated floodways, except for (1) repairs, reconstruction or improvements to a structure which do not increase the ground floor area; and (2) repairs, reconstruction or improvements to a structure, the cost of which does not exceed 50 percent of the market value of the structure either (a) before the repair, reconstruction or repair is started, or (b) if the structure has been damaged and is being restored, before the damage occurred. Work done on structures identified as historic places shall not be included in the 50 percent determination. [Ord. 2018-07-012 § 9; Ord. 2003-08-055 § 7; Ord. 9969 § 5, 1989; Ord. 9136 § 4(C), 1982].