A.
In all areas of special flood hazards, the following standards are
required.
B.
The Planning Board shall also determine, with the advice and assistance
of the Township Engineer, Construction Official and other competent
authorities, that:
(1)
The proposed utilities and facilities, such as water, sewer and electrical
systems, are located, elevated and constructed to minimize or eliminate
flood damage. These shall include watertight manholes with vents,
raised vents, flap valves, etc. Such facilities shall be constructed
with overflow elevations two feet above flood level.
(2)
Drainage is provided to reduce exposure to flood hazards.
(3)
Watertight doors will be installed.
(4)
The construction makes use of paints, membranes or mortars to reduce
seepage of water through walls.
(5)
Backfill should be of soils with natural low permeability.
(6)
Eight inches of compacted granular fill is used beneath the ground
floor; said fill materials shall act as a french drain.
(7)
No buried fuel oil tanks shall be permitted unless properly anchored
and vented, with the vent two feet above the flood level.
A.
All new construction and substantial improvements shall be anchored
to prevent flotation, collapse, or lateral movement of the structure.
B.
All manufactured homes shall be anchored to resist flotation, collapse
or lateral movement. Methods of anchoring may include, but are not
to be limited to, use of over-the-top or frame ties to ground anchors.
This requirement is in addition to applicable state and local anchoring
requirements for resisting wind forces.
(1)
Over-the-top ties shall be provided at each of the four corners of
the mobile home, with two additional ties per side at intermediate
locations, with mobile homes less than 50 feet long requiring one
additional tie per side.
(2)
Frame ties shall be provided at each corner of the home, with five
additional ties at intermediate points, with mobile homes less than
50 feet long requiring four additional ties per side.
(3)
All components of the anchoring system shall be capable of carrying
a force of 4,800 pounds.
(4)
Any additions to the mobile home shall be similarly anchored.
A.
All new and replacement water supply systems shall be designed to
minimize or eliminate infiltration of floodwaters into the system;
B.
New and replacement sanitary sewage systems shall be designed to
minimize or eliminate infiltration of floodwaters into the systems
and discharge from the systems into floodwaters;
C.
On-site waste disposal systems shall be located to avoid impairment
to them or contamination from them during flooding; and
D.
Electrical, heating, ventilation, plumbing and 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.
A.
All subdivision proposals shall be consistent with the need to minimize
flood damage;
B.
All subdivision proposals shall have public utilities and facilities
such as sewer, gas, electrical, and water systems located and constructed
to minimize flood damage;
C.
All subdivision proposals shall have adequate drainage provided to
reduce exposure to flood damage; and
D.
Base flood elevation data shall be provided for subdivision proposals
and other proposed development which contain at least 50 lots or five
acres (whichever is less).
All new construction and substantial improvements having fully
enclosed areas below the lowest floor that are usable solely for parking
of vehicles, building access or storage in an area other than a basement
and which are subject to flooding shall be designed to automatically
equalize hydrostatic flood forces on exterior walls by allowing for
the entry and exit of floodwaters. Designs for meeting this requirement
must either be certified by a registered professional engineer or
architect or must meet or exceed the following minimum criteria: A
minimum of two openings having a total net area of not less than one
square inch for every square foot of enclosed area subject to flooding
shall be provided. The bottom of all openings shall be no higher than
one foot above grade. Openings may be equipped with screens, louvers,
or other covering or devices, provided that they permit the automatic
entry and exit of floodwaters.
A.
New construction and substantial improvement of any residential structure
shall have the lowest floor, including basement, together with the
attendant utilities and sanitary facilities, elevated to or above
base flood elevation;
B.
Within any AO Zone on the municipality's FIRM, that all new
construction and substantial improvement of any residential structure
shall have the lowest floor, including basement, elevated above the
highest adjacent grade at least as high as the depth number specified
in feet (at least two feet if no depth number is specified), and require
adequate drainage paths around structures on slopes to guide floodwaters
around and away from proposed structures.
In an area of special flood hazard, all new construction and
substantial improvement of any commercial, industrial or other nonresidential
structure shall have the lowest floor, including basement, together
with the attendant utilities and sanitary facilities, either elevated
to the level of the base flood elevation and, within any AO Zone on
the municipality's DFIRM, that all new construction and substantial
improvement of any commercial, industrial or other nonresidential
structure shall have the lowest floor, including basement, elevated
above the highest adjacent grade at least as high as the depth number
specified in feet (at least two feet if no depth number is specified),
and require adequate drainage paths around structures on slopes to
guide floodwaters around and away from proposed structures, or:
Located within areas of special flood hazard established in § 136-7 are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of floodwaters which carry debris, potential projectiles, and erosion potential, the following provisions apply:
A.
Prohibit encroachments, including fill, new construction, substantial
improvements, and other development, unless a technical evaluation
demonstrates that encroachment shall not result in any increase in
flood levels during the occurrence of the base flood discharge.
C.
In all areas of special flood hazard in which base flood elevation
data has been provided and no floodway has been designated, the cumulative
effect of any proposed development, when combined with all other existing
and anticipated development, shall not increase the water surface
elevation of the base flood more than 0.2 of a foot at any point.
