§ 4-106. Provisions for flood hazard reduction—General standards.

In all areas of special flood hazards the following provisions are required for all new construction and substantial improvements.

(a)

All new construction or substantial improvements shall be designed (or modified) and adequately anchored to prevent flotation, collapse, or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy;

(b)

All new construction or substantial improvements shall be constructed by methods and practices that minimize flood damage;

(c)

All new construction or substantial improvements shall be constructed with materials resistant to flood damage;

(d)

All new and substantially improved residential structures shall have the duct work, and exposed plumbing and electrical components elevated to or above the base flood elevation;

(e)

All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system;

(f)

New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters into the system and discharge from the systems into the floodwater;

(g)

On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding;

(h)

A minimum of thirty (30) percent of the area within any given special flood hazard area in the community must remain in its undeveloped condition and free of impermeable surfaces; and

(i)

Prohibit encroachments, including fill, new construction, substantial improvements, and other development within the special flood hazard area unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment would not result in any increase in flood levels within the community during the occurrence of the base flood discharge.

(Ord. No. 1996-45, § 1, 12-3-96; Ord. No. 2008-30, § 1, 9-16-08)