The general requirements of this section apply to all development proposed within special flood hazard areas identified in § 88-4.
A.
All development proposals shall be consistent with the need to minimize
flood damage and are subject to all applicable standards in these
regulations.
B.
All development proposals shall have utilities and facilities such
as sewer, gas, electrical, and water systems located and constructed
to minimize flood damage.
C.
All development proposals shall have adequate drainage provided to
reduce exposure to flood damage.
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.
All new construction of buildings and structures, and substantial
improvements to existing buildings and structures, that are to be
located, in whole or in part, in special flood hazard areas, and buildings
and structures to be located on previously filled areas where the
filled ground surface is less than at or above the base flood elevation,
shall meet the following requirements:
A.
Be designed (or modified) and constructed to safely resist 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. Buildings and structures shall be designed,
connected and anchored to resist flotation, collapse or permanent
lateral movement due to structural loads and stresses from flooding
equal to the base flood elevation, including hydrodynamic and hydrostatic
loads and the effects of buoyancy.
B.
Be constructed by methods and practices that minimize flood damage.
C.
Use flood damage-resistant materials below the elevation of the lowest
floor. See FEMA Technical Bulletin No. 2, Flood Damage-Resistant Materials
Requirements and FEMA Technical Bulletin No. 8, Corrosion Protection
for Metal Connectors in Coastal Areas.
D.
Have electrical systems, equipment and components, and heating, ventilating,
air conditioning, and plumbing appliances, plumbing fixtures, duct
systems, and other service equipment located at least to the level
of the base flood elevation plus 12 inches of freeboard. Electrical
wiring systems are permitted to be located below the elevation of
the lowest floor, provided that they conform to the provisions of
the electrical part of this 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. See FEMA Technical Bulletin
No. 4, Elevator Installation.
[Amended 12-7-2018]
E.
As an alternative to § 88-20D, 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 that 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 the base flood.
F.
In special flood hazard areas other than coastal high hazard areas and Coastal A Zones (Zones A, AE, and AO) and previously filled areas where the filled ground surface is less than at or above the base flood elevation, meet the specific requirements of Article V.
G.
In all coastal high hazard areas (Zone VE) and Coastal A Zones, meet the specific requirements of Article VI.
H.
In a special flood hazard area with more than one designation (Zones
A, AE, and AO, floodway, Zones VE, Coastal A Zone), meet the requirements
of the most restrictive designation.
A.
Disposal of fill, including but not limited to rubble, construction
debris, woody debris, and trash, shall not be permitted in special
flood hazard areas.
B.
Where permitted by Article V (Zones A, AE, and AO), fill placed for the purpose of raising the ground level and to support a building or structure shall meet the following requirements:
(1)
Extend laterally from the building footprint to provide for adequate
access, as a function of use; the Floodplain Administrator may seek
advice from the State Fire Marshal's office and/or the local
fire services agency.
(2)
Placed and compacted to provide for stability under conditions of
rising and falling floodwaters and resistance to erosion, scour, and
settling.
(3)
Consist of soil or rock materials only.
(4)
Sloped no steeper than one vertical on two horizontal, unless approved
by the Floodplain Administrator.
(5)
Designed with provisions for adequate drainage and no adverse effect
on adjacent properties.
Repair, alteration, or rehabilitation of historic structures shall be subject to the requirements of these regulations unless a determination is made that compliance with these regulations will preclude the structure's continued designation as a historic structure and a variance is granted in accordance with Article VII and such variance is the minimum necessary to preserve the historic character and design of the structure.
A.
Recreational vehicles in special flood hazard areas shall be fully
licensed and ready for highway use, and may only be placed on a site
for 180 or fewer consecutive days.
B.
Recreational vehicles that are not fully licensed and ready for highway
use, or that are placed or planned to be placed on a site for more
than 180 consecutive days, are not permitted.
A.
Underground tanks in special 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 special flood hazard areas shall be elevated
and anchored at least to the level of the base flood elevation plus
12 inches of freeboard or shall be anchored at-grade and 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.
[Amended 12-7-2018]
C.
In special 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.
(2)
Anchored to prevent lateral movement resulting from hydrodynamic
and hydrostatic loads, including the effects of buoyancy, during conditions
of the base flood.
