The following minimum land development/subdivision
standards shall apply for all construction and development proposed
within any identified floodplain area.
A. Fill. If fill is used, it shall:
(1) Extend laterally at least 15 feet beyond the building
line from all points.
(2) Consist of soil or small rock materials only. Sanitary
landfills shall not be permitted.
(3) Be compacted to provide the necessary permeability
and resistance to erosion, scouring or settling.
(4) Be no steeper than one vertical to two horizontal
feet unless substantiated data justifying steeper slopes are submitted
to and approved by the Township Engineer.
(5) Be used to the extent to which it does not adversely
affect adjacent properties.
B. Drainage facilities. Storm drainage facilities shall
be designed to convey the flow of stormwater runoff in a safe and
efficient manner. The system shall ensure proper drainage along the
street and provide positive drainage away from buildings. The system
shall also be designed to prevent the discharge of excess runoff onto
adjacent properties.
C. Water and sanitary sewer facilities and systems.
(1) All new or replacement water and sanitary sewer facilities
and systems shall be located, designed and constructed to minimize
or eliminate flood damages and the infiltration of floodwaters.
(2) Sanitary sewer facilities and systems shall be designed
to prevent the discharge of untreated sewage into floodwaters.
(3) No part of any on-site sewage system shall be located
within any identified floodplain area except in strict compliance
with all state and local regulations for such systems. If any such
system is permitted, it shall be located so as to avoid impairment
to it or contamination from it during a flood.
D. Other utilities. All other utilities such as gas lines
and electrical and telephone systems shall be located, elevated (where
possible) and constructed to minimize the chance of impairment during
a flood.
E. Streets. The finished elevation of all new streets
shall be no more than one foot below the regulatory flood elevation.
The following minimum Building Code standards shall apply for all construction and development
proposed within any identified floodplain area.
A. Storage. All materials that are buoyant, flammable,
explosive or, in times of flooding, could be injurious to human, animal
or plant life shall be stored at or above regulatory flood elevation
and/or floodproofed to the maximum extent possible.
B. Placement of buildings and structures. All buildings
and structures shall be designed, located and constructed so as to
offer the minimum obstruction to the flow of water and shall be designed
to have a minimum effect upon the flow and height of floodwater.
C. Anchoring.
(1) All buildings and structures shall be firmly anchored
in accordance with accepted engineering practices to prevent flotation,
collapse or lateral movement.
(2) All air ducts, large pipes, storage tanks and other
similar objects or components located below the regulatory flood elevations
shall be securely anchored or affixed to prevent flotation.
D. Floors, walls and ceilings.
(1) Wood flooring used at or below the regulatory flood
elevation shall be installed to accommodate a lateral expansion of
the flooring perpendicular to the flooring grain without causing structural
damage to the building.
(2) Plywood used at or below the regulatory flood elevation
shall be of a marine or water-resistant variety.
(3) Walls and ceilings at or below the regulatory flood
elevation shall be designed and constructed of materials that are
water-resistant and will withstand inundation.
(4) Windows, doors and other components at or below the
regulatory flood elevation shall be made of metal or other water-resistant
material.
E. Paints and adhesives.
(1) Paints or other finishes used at or below the regulatory
flood elevation shall be of marine or water-resistant quality.
(2) Adhesives used at or below the regulatory flood elevation
shall be of a marine or water-resistant variety.
(3) All wooden components (doors, trim, cabinets, etc.)
shall be finished with a marine or water-resistant paint or other
finishing material.
F. Electrical components.
(1) Electrical distribution panels shall be at least three
feet above the one-hundred-year-flood elevation.
(2) Separate electrical circuits shall serve lower levels
and shall be dropped from above.
G. Equipment. Water heaters, furnaces, air-conditioning
and ventilating units and other electrical, mechanical or utility
equipment or apparatus shall not be located below the regulatory flood
elevation.
H. Fuel supply systems. All gas and oil supply systems
shall be designed to prevent the infiltration of floodwaters into
the system and discharges from the system into floodwaters. Additional
provisions shall be made for the drainage of these systems in the
event that floodwater infiltration occurs.