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A. Within flood hazard areas, as identified on the community’s flood hazard boundary map, no land use building permit shall be approved by the planning commission or borough assembly unless all of the following requirements are satisfied:

1. Any new or substantially improved structure shall be designated (or modified) and anchored to prevent flotation, collapse or lateral movement of the structure.

2. Construction materials and utility equipment that are resistant to flood damage and construction practices and methods that will minimize flood damages shall be utilized.

3. Construction or substantial improvement shall not be permitted unless the applicant demonstrates that any associated new or replacement water supply system and sanitary sewage system, including on-site systems, will be designed and constructed to minimize or eliminate infiltration of flood waters into the systems and discharge from the systems into flood waters. All systems shall be flood resistant or flood proofed to at least an elevation of 25 feet above mean lower low water (M.L.L.W.) as shown on the “Flood Plain and Flood Hazards Map” dated June 1989.

4. Require that all manufactured homes to be placed within zone A on a community’s FHBM or FIRM shall be installed using methods and practices which minimize flood damage. For the purposes of this requirement, manufactured homes must be elevated and anchored to resist flotation, collapse, or lateral movement.

5. The lowest level, including basement, of any new residential construction and/or of residential structures undergoing significant alteration or renovation shall be elevated to a minimum of 25 feet above mean lower low water as shown on the “Flood Plain and Flood Hazards Map” dated June 1989.

6. The lowest floor of new construction and substantial improvements of nonresidential structures shall be elevated a minimum of 25 feet above mean lower low water or, together with attendant utility and sanitary facilities, shall be flood resistant or flood proofed to 25 feet above mean lower low water as shown on the “Flood Plain and Flood Hazards Map” dated June 1989.

7. Mobile homes shall have ground anchors for tie-downs required in accordance with standards determined by the Federal Insurance Administration. Specific requirements shall be that (a) over-the-top ties be provided at each of the four corners of the mobile home, with two additional ties per side at intermediate locations and mobile homes less than 50 feet long requiring one additional tie per side; (b) frame ties be provided at each corner of the home with five additional ties per side at intermediate points and mobile homes less than 50 feet long requiring four additional ties per side; (c) all components of the anchoring system be capable of carrying a force of 4,800 pounds; and (d) any additions to the home be similarly anchored. The fact that the home is being located in a flood plain area having special hazards shall be disclosed to the mobile home and/or purchaser or lessee in the purchase contract, deed or lease.

B. Pursuant to subsection (A) of this section, the planning commission or assembly shall, at its discretion, require flood damage control measures such as the following:

1. Installation of watertight doors, bulkheads, and shutters, or similar methods of closure.

2. Reinforcement of walls to resist water pressures.

3. Use of paints, membranes, or mortars to reduce seepage of water through walls.

4. Installation of pumps or comparable facilities for subsurface drainage systems to relieve external foundation wall and basement flood pressures and water levels inside the structure.

5. Location and installation of all electrical equipment, circuits, appliances and heating systems so that they are protected from inundation by the floodwaters.

6. Location of storage facilities for chemicals, explosives, buoyant materials, flammable liquids or other toxic materials which could be hazardous to public health, safety and welfare; or design of such facilities to prevent flotation of storage containers which could result in the escape of toxic materials into flood waters.

7. Use of materials such as sheathing, siding, subflooring and underlayment that are not subject to water damage due to prolonged submersion.

8. Use of closed cell insulation to prevent waterlogging and consequent loss of insulation ability.

9. Oil storage tanks located outside the structure and anchored to prevent disturbance by flood water. Tanks should be placed upon and secured to a concrete slab of sufficient mass to prevent flotation. In the calculation of required anchorage, little recognition should be given to shear or friction values of the soils as they will be substantially reduced due to saturation. Both fill and vent pipes should extend above the expected high water level.

10. Installation of a backwater valve in sewer lines in an accessible location immediately adjacent to the exterior foundation wall. (Ord. 04-08-075)