The general requirements of this article apply to all development proposed within all special flood hazard areas identified in § 79-5.
A.
In all flood zones:
(1)
Subdivision proposals and development proposals shall
be consistent with the need to minimize flood damage and are subject
to all applicable standards in these regulations.
(2)
Subdivision proposals and development proposals shall
have utilities and facilities such as sewer, gas, electrical, and
water systems located and constructed to minimize flood damage.
(3)
Subdivision proposals and development proposals shall
have adequate drainage paths provided to reduce exposure to flood
hazards and to guide floodwaters around and away from proposed structures.
(4)
Subdivision proposals and development proposals containing at least five lots or at least five acres, whichever is the lesser, that are wholly or partially in flood hazard areas where base flood elevation data are not provided by the Floodplain Administrator or available from other sources shall be supported by determinations of base flood elevations as required in § 79-14 of these regulations.
(5)
Subdivision access roads shall have the driving surface
at or above the base flood elevation.
B.
In special flood hazard areas of nontidal waters of the
state:
(1)
Subdivision proposals shall be laid out such that proposed
building pads are located outside of the special flood hazard area
and any portion of platted lots that include land areas that are below
the base flood elevation shall be used for other purposes, deed restricted,
or otherwise protected to preserve it as open space.
(2)
Subdivision access roads shall have the driving surface
at or above the base flood elevation.
A.
New and replacement water supply systems shall be designed
to minimize or eliminate infiltration of floodwaters into the systems.
B.
New and replacement sanitary sewage systems shall be designed
to minimize or eliminate infiltration of floodwaters into systems
and discharges from systems into floodwaters.
C.
On-site waste disposal systems shall be located to avoid
impairment to or contamination from them during conditions of flooding.
New buildings and structures (including the placement and replacement
of manufactured homes) and substantial improvement of existing structures
(including manufactured homes) that are located, in whole or in part,
in any special flood hazard area shall:
A.
Be designed (or modified) and constructed to safely support
flood loads. The construction shall provide a complete load path capable
of transferring all loads from their point of origin through the load-resisting
elements to the foundation. Structures shall be designed, connected
and anchored to resist flotation, collapse or permanent lateral movement
due to structural loads and stresses, including hydrodynamic and hydrostatic
loads and the effects of buoyancy, from flooding equal to the flood
protection elevation or the elevation required by these regulations
or the building code, whichever is higher.
B.
Be constructed by methods and practices that minimize flood
damage.
D.
Have electrical systems, equipment and components, and mechanical, heating, ventilating, air conditioning, and plumbing appliances, plumbing fixtures, duct systems, and other service equipment located at or above the elevation of the lowest floor required in § 79-33A or 79-34A. Electrical wiring systems are permitted to be located below elevation of the lowest floor, provided they conform to the provisions of the electrical part of the building code for wet locations. If replaced as part of a substantial improvement, electrical systems, equipment and components, and heating, ventilation, air conditioning, and plumbing appliances, plumbing fixtures, duct systems, and other service equipment shall meet the requirements of this section.
E.
As an alternative to Subsection D, electrical systems, equipment and components, and heating, ventilating, air-conditioning, and plumbing appliances, plumbing fixtures, duct systems, and other service equipment are permitted to be located below the elevation of the lowest floor, provided they are designed and installed to prevent water from entering or accumulating within the components and to resist hydrostatic and hydrodynamic loads and stresses, including the effects of buoyancy, during the occurrence of flooding to that elevation.
F.
Have the electric panelboard elevated at least three feet
above the BFE.
H.
Comply with the requirements of the most restrictive designation
if located on a site that has more than one flood zone designation
(A Zone, designated floodway).
A.
Disposal of fill, including, but not limited to, earthen
soils, rock, rubble, construction debris, woody debris, and trash,
shall not be permitted in special flood hazard areas.
Repair, alteration, addition, rehabilitation, or other improvement
of historic structures that does not conform with the requirements
of this chapter shall be permitted only by variance. Evidence submitted
for consideration of the variance shall include a determination that
the proposed work will not preclude the structure's continued
eligibility or designation as an historic structure.
A.
New manufactured homes shall not be placed or installed
in floodways.
B.
For the purpose of these regulations, the lowest floor
of a manufactured home is the bottom of the lowest horizontal supporting
member (longitudinal chassis frame beam).
C.
New manufactured homes located outside of floodways, replacement
manufactured homes in any flood hazard areas, and substantial improvement
(including repair of substantial damage) of existing manufactured
homes in all flood hazard area shall:
(2)
Be installed in accordance with the anchor and tie-down
requirements of the building code or the manufacturer's written
installation instructions and specifications; and
Recreational vehicles shall:
Critical and essential facilities shall:
In addition to the application requirements of § 79-14, applications for the placement or erection of temporary structures and the temporary storage of any goods, materials, and equipment shall specify the duration of the temporary use. Temporary structures and temporary storage in floodways shall meet the limitations of § 79-32A of these regulations. In addition:
A.
Temporary structures shall:
(1)
Be designed and constructed to prevent flotation, collapse
or lateral movement resulting from hydrodynamic loads and hydrostatic
loads during conditions of the base flood;
(2)
Have electric service installed in compliance with the
electric code; and
(3)
Comply with all other requirements of the applicable state
and local permit authorities.
B.
Temporary storage shall not include hazardous materials.
A.
Underground tanks in flood hazard areas shall be anchored
to prevent flotation, collapse or lateral movement resulting from
hydrostatic loads, including the effects of buoyancy, during conditions
of the base flood.
B.
Aboveground tanks in flood hazard areas shall be anchored
to a supporting structure and elevated to or above the base flood
elevation, or shall be anchored or otherwise designed and constructed
to prevent flotation, collapse, or lateral movement resulting from
hydrodynamic and hydrostatic loads, including the effects of buoyancy,
during conditions of the base flood.
C.
In flood hazard areas, tank inlets, fill openings, outlets
and vents shall be:
(1)
At or above the base flood elevation or fitted with covers
designed to prevent the inflow of floodwater or outflow of the contents
of the tanks during conditions of the base flood; and
(2)
Anchored to prevent lateral movement resulting from hydrodynamic
and hydrostatic loads, including the effects of buoyancy, during conditions
of the base flood.
Applications for functionally dependent uses that do not conform to the requirements of these regulations shall be approved only by variances issued pursuant to Article VI. If approved, functionally dependent uses shall be protected by methods that minimize flood damage during the base flood, including measures to allow floodwaters to enter and exit, use of flood-damage-resistant materials, and elevation of electric service and equipment to the extent practical given the use of the building.
