In all areas of special flood hazards, the following
provisions are required:
A. All new construction and substantial improvements
shall be anchored to prevent flotation, collapse or lateral movement
of the structure.
B. All new construction and substantial improvements
shall be resistant to flood damage.
C. Electrical, heating, ventilation, plumbing, air-conditioning
equipment and other service facilities shall be designed and/or located
so as to prevent water from entering or accumulating within the components
during conditions of flooding.
D. All new construction or substantial improvements shall
be constructed by methods and practices that minimize flood damage.
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 systems and discharges from the systems into floodwaters.
G. On-site waste disposal systems shall be located to
avoid impairment to them or contamination from them during flooding.
H. The Town Planner shall obtain, review and reasonably utilize any base flood elevation and floodway data available from a federal, state or other source, including data developed pursuant to Article
VI of this chapter, as criteria for requiring that new construction, substantial improvements or other development in Zone A on the community's FIRM meet the standards in §
94-13.
(1) In A Zones where base flood elevations have been determined,
but before a floodway is designated, no new construction, substantial
improvement or other development (including fill) shall be permitted
which will increase base flood elevations more than one foot at any
point along the watercourse when all anticipated development is considered
cumulatively with the proposed development.
(2) The Town Planner may request floodway data of an applicant
for watercourses without FEMA-published floodways. When such data
is provided by an application or whenever such data is available from
any other source (in response to the Town's request or not), the Town
shall adopt a regulatory floodway based on the principle that the
floodway must be able to convey the waters of the base flood without
increasing the water surface elevation more than one foot at any point
along the watercourse.
(3) Base flood elevation data shall be provided with any
application for activity in an A Zone or applications for new construction
and/or substantial improvements in A Zones.
In all areas of special flood hazards where base flood elevation data has been provided as set forth in §
94-4 and §
94-12H, the following provisions are required:
A. Residential construction. Substantial improvement
of any residential structure shall have the lowest floor, including
basement, elevated to or above the base flood elevation.
B. Nonresidential construction. New construction or substantial improvement of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated to the level of the base flood elevation or, together with attendant utility and sanitary facilities, be floodproofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect shall certify that the standards of this subsection are satisfied. Such certification shall be provided to the official as set forth in §
94-11B(3).
C. Recreational vehicles placed on sites within Zones
A1-30, AH and AE shall either:
(1) Be on the site for fewer than 180 consecutive days;
(2) Be fully licensed and ready for highway use (a recreational
vehicle is ready for highway use if it is on its wheels or jacking
system, is attached to the site only by quick-disconnect-type utilities
and security devices and has no permanently attached additions); or
(3) Meet all the general standards of §
94-12 and the elevation and anchoring requirements of this §
94-13.
D. Floodways. Since the floodway is an extremely hazardous
area due to the velocity of floodwaters which carry debris, potential
projectiles and erosion potential, in addition to other provisions
of this Article, all encroachments, including fill, new construction,
substantial improvements and other developments, are prohibited unless
certification by a professional registered engineer or architect is
provided demonstrating that encroachments shall not result in any
increase in flood levels during occurrence of the base flood discharge.