[Ord. 524, 12/31/1991; as amended by Ord. 551, 12/18/1996,
§ II]
1.
In the identified floodplain area, the development and/or use of
any land shall be permitted provided that the development and/or use
complies with the restrictions and requirements of this Part and all
other applicable codes and ordinances in force in the Township.
2.
Within any Floodway Area, no new construction or development shall
be permitted that would cause any increase in the one-hundred-year
flood elevation.
3.
Within any identified floodplain area, no new construction or development
shall be located within the area measured 50 feet landward from the
top-of-bank of any watercourse.
4.
Within any identified floodplain area, the elevation of the lowest
floor (including basement) of any new or substantially improved residential
structure shall be 1 1/2 feet or more above the one-hundred-year
flood elevation.
5.
Within any identified floodplain area, the elevation of the lowest
floor (including basement) of any new or substantially improved nonresidential
structure shall be 1 1/2 feet or more above the one-hundred-year
flood elevation or be floodproofed up to that height. 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), 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.
6.
Fully enclosed spaces below the lowest floor shall be prohibited.
7.
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 floodwaters
for the purpose of equalizing hydrostatic forces on exterior walls.
The terms "partially enclosed space" also includes crawl spaces. Designs
for meeting this requirement must either be certified by a registered
professional engineer or architect or meet or exceed the following
minimum criteria:
A.
A minimum of two openings having a net total area of not less than
one square inch for every square foot of enclosed space shall be provided.
B.
The bottom of all openings shall be no higher than one foot above
grade.
C.
Openings may be equipped with screens, louvers, etc., or other coverings
or devices, provided that they permit the automatic entry and exit
of floodwaters.
8.
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 floodwater.
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 floodwaters 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 shall
be provided.
(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.
[Ord. 524, 12/31/1991]
The following minimum standards shall apply for all construction
and development proposed within any identified floodplain area:
1.
Fill. If fill is used, it shall:
A.
Extend laterally at least 15 feet beyond the building line from all
points;
B.
Consist of soil or small rock materials only; landfills shall not
be permitted;
C.
Be compacted to provide the necessary permeability and resistance
to erosion, scouring, or settling;
D.
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; and
E.
Be used to the extent to which it does not adversely affect adjacent
properties.
2.
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 streets and provide
positive drainage away from buildings. The system shall also be designed
to prevent the discharge of excess runoff onto adjacent properties.
3.
Water and Sanitary Sewer Facilities and Systems.
A.
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.
B.
Sanitary sewer facilities and systems shall be designed to prevent
the discharge of untreated sewage into floodwaters.
C.
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.
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.
5.
Streets. The finished elevation of all new streets shall be no more
than one foot below the regulatory flood elevation.
6.
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 § 4-343, Development Which May Endanger Human Life, shall be stored at or above the regulatory flood elevation and/or floodproofed to the maximum extent possible.
7.
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.
8.
Anchoring.
A.
All buildings and structures shall be firmly anchored in accordance
with accepted engineering practices to prevent flotation, collapse,
or lateral movement.
B.
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.
9.
Floors, Walls, Ceilings.
A.
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.
B.
Plywood used at or below the regulatory flood elevation shall be
of a "marine" or water-resistant variety.
C.
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.
D.
Windows, doors, and other components at or below the regulatory flood
elevation shall be made of metal or other water-resistant material.
10.
Paints and Adhesives.
A.
Paints or other finishes used at or below the regulatory flood elevation
shall be of "marine" or water-resistant quality.
B.
Adhesives used at or below the regulatory flood elevation shall be
of a "marine" or water-resistant variety.
C.
All wooden components (doors, trim, cabinets, etc.) shall be finished
with a "marine" or water-resistant paint or other finishing material.
12.
Equipment. Water heaters, furnaces, air conditioning and ventilating
units, and other mechanical or utility equipment or apparatus shall
not be located below the regulatory flood elevation.
13.
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.
[Ord. 524, 12/31/1991]
1.
In accordance with the Pennsylvania Floodplain Management Act and
the regulations adopted by the Department of Community Affairs as
required by the Act, any new or substantially improved structure which
will be used for the production or storage of any of the following
dangerous materials or substances; or 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 will involve the production, storage,
or use of any amount of radioactive substances; 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:
A.
Acetone.
B.
Ammonia.
C.
Benzene.
D.
Calcium carbide.
E.
Carbon disulfide.
F.
Celluloid.
G.
Chlorine.
H.
Hydrochloric acid.
I.
Hydrocyanic acid.
J.
Magnesium.
K.
Nitric acid and oxides of nitrogen.
L.
Petroleum products (gasoline, fuel oil, etc.).
M.
Phosphorus.
N.
Potassium.
O.
Sodium.
P.
Sulphur and sulphur products.
Q.
Pesticides (including insecticides, fungicides and rodenticides).
R.
Radioactive substances, insofar as such substances are not otherwise
regulated.
4.
Where permitted within any Flood-Fringe (FF) or General Floodplain District (FA), any structure of the kind described in § 4-342, Subsection 1, above shall be:
A.
Elevated or designed and constructed to remain completely dry 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.
|
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 floodproofing contained
in the publication, "Flood-Proofing Regulations" (U.S. Army Corps
of Engineers, June 1972), or with some other equivalent watertight
standard.
|
[Ord. 524, 12/31/1991]
Where permitted within any identified floodplain area, all manufactured
homes and additions thereto shall be:
A.
Placed on a permanent foundation.
B.
Elevated so that the lowest floor of the manufactured home is 1 1/2
feet or more above the elevation of the one-hundred-year flood.
C.
Anchored to resist flotation, collapse, or lateral movement.
D.
Within any identified floodway area, all manufactured homes and any
additions thereto shall be prohibited.
