[Ord. 09-127, 1/5/2009, § 4.00]
1.
No encroachment, alteration, or improvement of any kind shall be
made to any watercourse until all adjacent municipalities which may
be affected by such action have been notified by the municipality,
and until all required permits or approvals have been first obtained
from the Department of Environmental Protection Regional Office.
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In addition, the Federal Emergency Management Agency and Pennsylvania
Department of Community and Economic Development, shall be notified
prior to any alteration or relocation of any watercourse.
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2.
Any new construction, development, uses or activities allowed within
any identified floodplain area shall be undertaken in strict compliance
with the provisions contained in this chapter and any other applicable
codes, ordinances and regulations.
[Ord. 09-127, 1/5/2009, § 4.01]
1.
With any FW (Floodway Area), the following provisions apply:
2.
Within any FE (Special Floodplain Area), no new construction or development
shall be allowed unless it is demonstrated that the cumulative effect
of the proposed development, when combined with all other existing
and anticipated development, will not increase the elevation of the
one-hundred-year flood more than one foot at any point.
3.
Within any FE (Special Floodplain Area) or FA (General Floodplain
Area), the following provisions apply:
[Ord. 09-127, 1/5/2009, § 4.02]
1.
Residential Structures. Within any identified floodplain area, any
new construction or substantial improvement of a residential structure
shall have the lowest floor (including basement) elevated up to, or
above, the regulatory flood elevation. The design and construction
standards and specifications contained in the 2003 IBC (§§ 1612.4,
1603.1.6 and 3403.1) and in the 2003 IRC (§§ R323.1.4,
R323.2.1, and R323.2.2) and ASCE 24 (§§ 2.4 and 2.5,
Chapter 5) and 34 Pa.Code (Chapters 401 — 405 as amended) shall
be utilized.
2.
Nonresidential Structures.
A.
Within any identified floodplain area, any new construction or substantial
improvement of a nonresidential structure shall have the lowest floor
(including basement) elevated up to, or above, the regulatory flood
elevation, or be designed and constructed so that the space enclosed
by such structure shall remain either completely or essentially dry
during any flood up to that height.
B.
Any nonresidential structure, or part thereof, having a lowest floor
which is not elevated to at least 1 1/2 feet above the one-hundred-year
flood elevation, shall be floodproofed in a completely or essentially
dry manner in accordance with the W1 or W2 space classification standards
contained in the publication entitled "Flood-Proofing Regulations"
published by the U.S. Army Corps of Engineers (June 1972, as amended
March 1992) or with some other equivalent standard. All plans and
specifications for such floodproofing shall be accompanied by a statement
certified by a registered professional engineer or architect which
states that the proposed design and methods of construction are in
conformance with the above-referenced standards.
C.
The design and construction standards and specifications contained
in the IBC (§§ 1603.1.2, 1603.1.6, 1605.2.2, 1606.5,
1612.5.1 and 3403.1, and ASCE 24 (§ 2.4 and Chapter 7) and
34 Pa.Code (Chapters 401 — 405 as amended) shall be utilized.
3.
Space below the Lowest Floor.
A.
Fully enclosed space below the lowest floor (including basement)
is prohibited.
B.
Partially enclosed space below the lowest floor (including basement)
which will be used solely for the parking of a vehicle, building access,
or incidental storage in an area other than a basement, shall be designed
and constructed to allow for the automatic entry and exit of flood
waters for the purpose of equalizing hydrostatic forces on exterior
walls. The term "partially enclosed space" also includes crawl spaces.
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Designs for meeting this requirement must either be certified
by a registered professional engineer or architect, or meet or exceed
the following minimum criteria:
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(1)
A minimum of two openings having a net total area of not less
than one square inch for every square foot of enclosed space.
(2)
The bottom of all openings shall be no higher than one foot
above grade.
(3)
Openings may be equipped with screens, louvers, etc., or other
coverings or devices provided that they permit the automatic entry
and exit of floodwaters.
C.
Consideration may be given to the requirements of 34 Pa.Code (Chapters
401-405 as amended) and the 2003 IRC (§§ R323.2.2 and
R323.1.4) and the 2003 IBC (§§ 1612.4, 1612.5, 1202.3.2
and 1203.3.3).
4.
Accessory Structures. Structures accessory to a principal building
need not be elevated or floodproofed to remain dry, but shall comply,
at a minimum, with the following requirements:
A.
The structure shall not be designed or used for human habitation,
but shall be limited to the parking of vehicles, or to the storage
of tools, material, and equipment related to the principal use or
activity.
B.
Floor area shall not exceed 600 square feet.
C.
The structure will have a low damage potential.
D.
The structure will be located on the site so as to cause the least
obstruction to the flow of flood waters.
E.
Power lines, wiring, and outlets will be at least 1 1/2 feet
above the one-hundred-year flood elevation.
F.
Permanently affixed utility equipment and appliances such as furnaces,
heaters, washers, dryers, etc., are prohibited.
G.
Sanitary facilities are prohibited.
H.
The structure shall be adequately anchored to prevent flotation or
movement and shall be designed to automatically provide for the entry
and exit of floodwater for the purpose of equalizing hydrostatic forces
on the walls. Designs for meeting this requirement must either be
certified by a registered professional engineer or architect, or meet
or exceed the following minimum criteria:
(1)
A minimum of two openings having a net total area of not less
than one square inch for every square foot of enclosed space.
(2)
The bottom of all openings shall be no higher than one foot
above grade.
(3)
Openings may be equipped with screens, louvers, etc., or other
coverings or devices provided that they permit the automatic entry
and exit of flood waters.
[Ord. 09-127, 1/5/2009, § 4.03]
1.
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
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 Building Permit Officer.
(5)
Be used to the extent to which it does not adversely affect
adjacent properties. The provisions contained in the 2003 IBC (§§ 1801.1
and 1803.4) shall be utilized.
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.
The provisions contained in the 2003 IBC (Appendix G401.5) shall be
utilized.
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 flood waters.
(2)
Sanitary sewer facilities and systems shall be designed to prevent
the discharge of untreated sewage into flood waters.
(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.
(4)
The design and construction provisions of the UCC and 34 Pa.Code
(Chapters 401 — 405 as amended) and contained in the 2003 IBC
(Appendix G, §§ 401.3 and 401.4), the 2003 IRC (§ 323.1.6),
the ASCE 24-98 (§ 8.3), FEMA #348, Protecting Building Utilities
From Flood Damages, and the International Private Sewage Disposal
Code (Chapter 3) 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 § 8-405, "Development Which May Endanger Human Life," shall be stored at or above the regulatory flood elevation and/or flood proofed 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 flood water.
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.
(3)
The design and construction requirements of the UCC pertaining
to this section as referred to in 34 Pa.Code (Chapters 401 —
405 as amended) and contained in the 2003 IBC (§§ 1605.2.2,
1605.3.1.2, 1612.4 and Appendix G501.3), the IRC (§§ R301.1
and R323.1.1) and ASCE 24-98 (§ 5.6) shall be utilized.
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.) shall be
finished with a "marine" or "water-resistant" paint or other finishing
material.
(4)
The standards and specifications contained in 34 Pa.Code (Chapters
401 — 405, as amended) the 2003 IBC (§§ 801.1.3,
1403.7 and Appendix G) and the 2003 IRC (§ R323.1.7).
K.
L.
Equipment.
(1)
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 flood waters into the system and discharges
from the system into flood waters. Additional provisions shall be
made for the drainage of these systems in the event that flood water
infiltration occurs.
N.
Uniform Construction Code Coordination. The standards and specifications
contained 34 Pa.Code (Chapters 401 — 405, as amended) and not
limited to the following provisions shall apply to the above and other
sections and subsections of this chapter, to the extent that they
are more restrictive and/or supplement the requirements of this chapter.
[Ord. 09-127, 1/5/2009, § 4.04]
1.
In accordance with the Pennsylvania Flood Plain Management Act, and
the regulations adopted by the Department of Community and Economic
Development as required by the Act, any new or substantially improved
structure which:
A.
Will be used for the production or storage of any of the following
dangerous materials or substances; or,
B.
Will be used for any activity requiring the maintenance of a supply
of more than 550 gallons, or other comparable volume, of any of the
following dangerous materials or substances on the premises; or,
C.
Will involve the production, storage, or use of any amount of radioactive
substances;
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Shall be subject to the provisions of this section, in addition
to all other applicable provisions. The following list of materials
and substances are considered dangerous to human life:
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(1)
Acetone.
(2)
Ammonia.
(3)
Benzene.
(4)
Calcium carbide.
(5)
Carbon disulfide.
(6)
Celluloid.
(7)
Chlorine.
(8)
Hydrochloric acid.
(9)
Hydrocyanic acid.
(10)
Hydrofluoric acid.
(11)
Magnesium.
(12)
Nitric acid and oxides of nitrogen.
(13)
Petroleum products (gasoline, fuel oil, etc.).
(14)
Phosphorus.
(15)
Potassium.
(16)
Sodium.
(17)
Sulphur and sulphur products.
(18)
Pesticides (including insecticides, fungicides, and rodenticides).
(19)
Radioactive substances, insofar as such substances are not otherwise
regulated.
(20)
Any other dangerous materials or substances regulated by the
appropriate federal or state agencies.
2.
Within any FW (Floodway Area), any structure of the kind described
in subsection .1 above, shall be prohibited.
3.
Within any FE (Special Floodplain Area) or FA (General Floodplain
Area), any new or substantially improved structure of the kind described
in subsection .1 above, shall be prohibited within the area measured
50 feet landward from the top-of-bank of any watercourse.
4.
Where permitted within any floodplain area, any new or substantially
improved structure of the kind described in subsection .1 above, shall
be:
A.
Elevated or designed and constructed to remain completely dry up
to at least 1 1/2 feet above the one-hundred-year flood.
B.
Designed to prevent pollution from the structure or activity during
the course of a one-hundred-year flood.
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Any such structure, or part thereof, that will be built below
the regulatory flood elevation shall be designed and constructed in
accordance with the standards for completely dry flood proofing contained
in the publication "Flood-Proofing Regulations" (U.S. Army Corps of
Engineers, June 1972 as amended March 1992), or with some equivalent
watertight standard.
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[Ord. 09-127, 1/5/2009, § 4.05]
