§ 21-12. Floodplain development permit.

A. 

Purpose and fees.

(1) 

Purpose. A floodplain development permit is hereby established for all construction and other development to be undertaken in areas of special flood hazard in this community for the purpose of protecting its citizens from increased flood hazards and insuring that new development is constructed in a manner that minimizes its exposure to flooding. It shall be unlawful to undertake any development in an area of special flood hazard, as shown on the Flood Insurance Rate Map enumerated in § 21-6, without a valid floodplain development permit. Application for a permit shall be made on forms furnished by the Local Administrator and may include, but not be limited to: plans, in duplicate, drawn to scale and showing the nature, location, dimensions and elevations of the area in question; existing or proposed structures, fill, storage of materials, drainage facilities; and the location of the foregoing.

(2) 

Fees. All applications for a floodplain development permit shall be accompanied by an application fee in the amount indicated in the Town of North Hempstead Fee Schedule. In addition, the applicant shall be responsible for reimbursing the Town of North Hempstead for any additional costs necessary for review, inspection and approval of this project. The Local Administrator may require a deposit of no more than $500 to cover these additional costs.

B. 

Application for a permit. The applicant shall provide the following information, as appropriate. Additional information may be required on the permit application form.

(1) 

The proposed elevation, in relation to mean sea level, of the lowest floor (including basement or cellar) of any new or substantially improved structure to be located in Zone A1-A30, AE or AH, or Zone A, if base flood elevation data are available. Upon completion of the lowest floor, the permitee shall submit to the Local Administrator the as-built elevation, certified by a licensed professional engineer or surveyor.

(2) 

The proposed elevation, in relation to mean sea level, of the bottom of the lowest structural member of the lowest floor (excluding pilings and columns) of any new or substantially improved structure to be located in Zone V1-V30 or VE, or Zone V, if base flood elevation data are available, or in an area of moderate wave action. Upon completion of the lowest floor, the permitee shall submit to the Local Administrator the as-built elevation, certified by a licensed professional engineer or surveyor.

(3) 

The proposed elevation, in relation to mean sea level, to which any new or substantially improved nonresidential structure will be floodproofed. Upon completion of the floodproofed portion of the structure, the permitee shall submit to the Local Administrator the as-built floodproofed elevation, certified by a professional engineer or surveyor.

(4) 

A certificate from a licensed professional engineer or architect that any utility floodproofing will meet the criteria in § 21-15C, Utilities.

(5) 

A certificate from a licensed professional engineer or architect that any nonresidential floodproofed structure will meet the floodproofing criteria in § 21-16.2, Nonresidential structures (except coastal high-hazard areas).

(6) 

A description of the extent to which any watercourse will be altered or relocated as a result of proposed development. Computations by a licensed professional engineer must be submitted that demonstrate that the altered or relocated segment will provide equal or greater conveyance than the original stream segment. The applicant must submit any maps, computations or other material required by the Federal Emergency Management Agency (FEMA) to revise the documents enumerated in § 21-6, when notified by the Local Administrator, and must pay any fees or other costs assessed by FEMA for this purpose. The applicant must also provide assurances that the conveyance capacity of the altered or relocated stream segment will be maintained.

(7) 

A technical analysis by a licensed professional engineer, if required by the Local Administrator, which shows whether proposed development to be located in an area of special flood hazard may result in physical damage to any other property.

(8) 

In Zone A, when no base flood elevation data are available from other sources, base flood elevation data shall be provided by the permit applicant for subdivision proposals and other proposed developments (including proposals for manufactured home and recreational vehicle parks and subdivisions) that are greater than either 50 lots or five acres.

(9) 

In Zones V1-V30 and VE, and also Zone V, if base flood elevation data are available, or in an area of moderate wave action, designs and specifications, certified by a licensed professional engineer or architect, for any breakaway walls in a proposed structure with design strengths in excess of 20 pounds per square foot.

(10) 

In Zones V1-V30 and VE, and also Zone V, if base flood elevation data are available, or in an area of moderate wave action, for all new and substantial improvements to structures, floodplain development permit applications shall be accompanied by design plans and specifications, prepared in sufficient detail to enable independent review of the foundation support and connection components. Said plans and specifications shall be developed or reviewed by a licensed professional engineer or architect and shall be accompanied by a statement, bearing the signature of the architect or engineer, certifying that the design and methods of construction to be used are in accordance with accepted standards of practice and with all applicable provisions of this chapter.