The following minimum 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, residual waste, or any material
which would require environmental permitting by the state or federal
government to remain on site or to be disposed of elsewhere 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 foot
vertical to two feet horizontal, unless substantiated data justifying
steeper slopes are submitted to and approved by the Floodplain Administrator;
and
(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 insure proper drainage
along streets 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
supply 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, county and township prevailing
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.
(4) The design and construction
provisions of the UCC and FEMA No. 348, Protecting Building Utilities
from Flood Damages, and the International Private Sewage Disposal
Code shall be utilized.
D. Other utilities. All other utilities,
such as gas lines, 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.
F. Storage. All materials that are buoyant, flammable, explosive, or, in times of flooding, could be injurious to human, animal, or plant life, and not listed in §
183-25, Development which may endanger human life, shall be stored at or above the regulatory flood elevation or floodproofed to the maximum extent possible.
G. 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.
H. 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 elevation shall be securely anchored or affixed
to prevent flotation.
I. 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.
J. Paints and adhesives.
(1) Paints and 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.) used at or below the regulatory flood elevation
shall be finished with a marine or water-resistant paint or other
finishing material.
K. Electrical components.
(1) Electrical distribution panels
shall be at least three feet above the base flood elevation.
(2) Separate electrical circuits
shall serve lower levels and shall be dropped from above.
L. 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.
M. 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.
N. Uniform Construction Code coordination.
The standards and specifications of the latest adopted Pennsylvania
versions of the International Building Code and International Residential
Code, as amended, shall apply to the above and other sections and
subsections of this chapter, to the extent that they are more restrictive
and supplement the requirements of this chapter.
All subdivision proposals and development proposals containing
at least 50 lots or at least five acres, whichever is the lesser,
in identified floodplain areas where base flood elevation data are
not available, shall be supported by hydrologic and hydraulic engineering
analyses that determine base flood elevations and floodway information.
The analyses shall be prepared by a licensed professional engineer
in a format required by FEMA for a conditional letter of map revision
or letter of map revision. Submittal requirements and processing fees
shall be the responsibility of the applicant.
Recreational vehicles in Zones A, A1-30, AH and AE must either:
A. Be on the site for fewer than
180 consecutive days;
B. Be fully licensed and ready for
highway use; or
C. Meet the permit requirements for manufactured homes in §
183-27.