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(A) With any FW (Floodway Area), the following provisions apply.
(1) Any new construction, development, use, activity or encroachment that would cause any increase in flood heights shall be prohibited.
(2) No new construction or development shall be allowed, unless a permit is obtained from the Department of Environmental Protection, Bureau of Dams, Waterways and Wetlands.
(B) 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 in elevation of the 100-year flood more than one foot at any point.
(C) Within any FE (Special Floodplain Area) or FA (General Floodplain Area), the following provisions apply.
(1) No new construction or development shall be located within the area measured 50 feet landward from the top-of-bank of any watercourse, unless a permit is obtained from the Department of Environmental Protection, Bureau of Dams, Waterways and Wetlands.
(2) Any new construction or development, which would cause any increase in flood heights shall be prohibited within any floodplain area.
(Ord. 43C, passed 11-1-2001) Penalty, see § 151.999
(A) Residential structures. Within any FW, FF or FA, the lowest floor (including basement) of any new or improved residential structures shall be at least one and one-half feet above the 100-year flood elevation.
(B) Nonresidential structures.
(1) Within any FW, FF or FA, the lowest floor (including basement) shall be at least one and one-half feet above the 100-year 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.
(2) Any structure, or part thereof, which will not be completely or adequately elevated, shall be designed and constructed to be completely or essentially dry in accordance with the standards contained in the publication entitled Flood-Proofing Regulations (U.S. Army Corps of Engineers, June, 1972 as amended March 1992), or some other equivalent standard, for that type of construction.
(C) Space below the lowest floor.
(1) Fully enclosed space below the lowest floor (including basement) is prohibited.
(2) (a) 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 term “partially enclosed space” also includes crawl spaces.
(b) 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; and
3. Openings may be equipped with screens, louvers and the like, or other coverings or devices, provided that they permit the automatic entry and exit of floodwaters.
(D) 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.
(1) 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, materials and equipment related to the principal use or activity.
(2) Floor area shall not exceed 600 square feet.
(3) The structure will have a low damage potential.
(4) The structure will be located on the site so as to cause the least obstruction to the flow of floodwaters.
(5) Power lines, wiring and outlets will be at least one and one-half feet above the 100-year flood elevation.
(6) Permanently affixed utility equipment and appliances such as furnaces, heaters, washers, dryers and the like are prohibited.
(7) Sanitary facilities are prohibited.
(8) 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 purposes of equalizing hydrostatic forces on the walls. Designs for meeting this requirement must either be certified by a registered 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.
(b) The bottom of all openings shall be no higher than one foot above grade.
(c) Openings may be equipped with screens, louvers and the like or other coverings or devices, provided that they permit the automatic entry and exit of floodwaters.
(Ord. 43C, passed 11-1-2001) Penalty, see § 151.999
The following minimum standards shall apply for all construction proposed to be undertaken 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 setting;
(4) Be no steeper than one vertical to two horizontal, unless substantiated data, justifying steeper slopes are submitted to, and approved by the Zoning and Codes Enforcement Officer; and
(5) Be used to the extent to which it does not adversely affect adjacent properties.
(B) Drainage. 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.
(C) Water and sanitary sewer facilities and systems.
(1) All new or replacement sanitary sewer facilities, and private package sewage treatment plants (including all pumping stations and collector systems) shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharges from the systems into the floodwaters. In addition, they should be located and constructed to minimize or eliminate flood damage and impairment.
(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, electrical and telephone systems, shall be located, elevated (where possible) and constructed to minimize the change of impairment during a flood.
(E) Streets. The finished elevation of proposed new streets shall be not more than one foot below the regulatory flood elevation.
(F) Utilities. All utilities such as gas lines, electrical and telephone systems shall be placed above the regulatory flood elevation and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
(G) Storage. All materials that are bouyant, flammable, explosive, or in times of flooding, could be injurious to human, animal or plant life, and not listed in § 151.064 shall be stored at or above the regulatory flood elevation and/or floodproofed to the maximum extent possible.
(H) 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.
(I) Anchoring.
(1) All buildings and structures shall be firmly anchored in accordance with accepted engineering practices to prevent floatation, 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.
(J) 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 floor 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 water-resistant materials.
(K) Paints and adhesives.
(1) Paints or other finishes used at or below the regulatory flood elevation shall be of a “marine” or “water-resistant paint” or other finishing material.
(2) Adhesives used at or below the regulatory flood elevation shall be of a “marine” or “water-resistant” quality.
(3) All wooden components (doors, trim cabinets and the like) shall be finished with a “marine” or “water-resistant paint” or other finishing material.
(L) Electrical systems and components.
(1) Electric water heaters, furnaces, air conditioning and ventilating systems, and other electrical equipment or apparatus shall be placed above the regulatory flood elevation and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
(2) Electrical distribution panels shall be at least three feet above the 100-year flood elevation.
(3) Separate electrical circuits shall serve lower levels and shall be dropped from above.
(M) Plumbing.
(1) Water heaters, furnaces, and other mechanical equipment or apparatus shall be placed above the regulatory flood elevation and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
(2) All on-site sewage disposal systems shall be designed and constructed to minimize or eliminate infiltration of floodwaters into the systems and discharges from the systems into the floodwaters. In addition, they should be located and constructed to minimize or eliminate flood damage and impairment.
(3) 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) Use of openings in enclosures below a structure’s lowest floor.
(1) For all new construction and substantial improvement, fully enclosed areas below the lowest floor that are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry of floodwaters.
(2) 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) 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 the flooding shall be provided;
(b) The bottom of all openings shall be no higher than one foot above grade; and
(c) Openings may be equipped with screens, louvers or other coverings or devices provided that they permit the automatic entry and exit of floodwaters.
(Ord. 43C, passed 11-1-2001)
(A) In accordance with the Pennsylvania Floodplain Management Act, being 32 P.S. §§ 679.101 et seq., and the regulations adopted by the Department of Community and Economic Development 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 materials or substances or which will be used for any activity requiring the maintenance of a supply (more than 440 gallons or other comparable volume or any amount of radioactive substances) of any of the following materials or substances on the premises, shall be subject to the provisions of this section, in addition to all other applicable provisions:
(1) Acetone;
(2) Ammonia;
(3) Benzene;
(4) Calcium carbide;
(5) Carbon disulfide;
(6) Celluloid;
(7) Chlorine;
(8) Hydrochloric acid;
(9) Hydrocyanic acid;
(10) Magnesium;
(11) Nitric acid and oxides of nitrogen;
(12) Petroleum products (gasoline, fuel, oil and the like);
(13) Phosphorus;
(14) Potassium;
(15) Sodium;
(16) Sulphur and sulphur products;
(17) Pesticides (including insecticides, fungicides and rodenticides); and
(18) Radioactive substances, insofar as such substances are not otherwise regulated.
(B) Within any FW (Floodway Area), any structure of any kind described in division (A) above shall be prohibited.
(C) (1) Within any FF (Flood-Fringe Area) or FA (General Floodplain Area), any structure of the kind described in division (A) above shall be:
(a) Elevated or designed and constructed to remain completely dry up to at least one and one-half feet above the 100-year flood; and
(b) Designed to prevent pollution from the structure or activity during the course of a 100- year flood.
(2) 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 other equivalent water-tight standard.
(Ord. 43C, passed 11-1-2001)
(A) Within any FW (Floodway Area), manufactured homes shall be prohibited.
(B) Within any FA (General Floodplain Area) or FE (Special Floodplain Area), manufactured homes shall be prohibited within the area measured 50 feet landward from the top-of-bank of any watercourse.
(C) Where permitted within any floodplain area, all manufactured homes, and any improvement thereto, shall be:
(1) Placed on a permanent foundation;
(2) Elevated so that the lowest floor of the manufactured home is one and one-half feet or more above the elevation of the 100-year flood; and
(3) Anchored to resist flotation, collapse or lateral movement.
(Ord. 43C, passed 11-1-2001) Penalty, see § 151.999
ACTIVITIES REQUIRING SPECIAL PERMITS
In accordance with the Department of Community and Economic Developments, administrative regulations implementing the Pennsylvania Floodplain Management Act (Act 1978-166) being 32 P.S. §§ 679.101 et seq., the following obstructions and activities are prohibited if located entirely or partially within an identified floodplain area unless a special permit is issued:
(A) Hospitals (public or private);
(B) Nursing homes (public or private);
(C) Jails or prisons; and
(D) New manufactured home parks and manufactured subdivisions, and substantial improvements to such existing parks and subdivisions.
(Ord. 43C, passed 11-1-2001)
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