§ 10.09.00. Flood resistant development.

10.09.01. Buildings and structures.

10.09.02. Design and Construction of Buildings, Structures and Facilities Exempt from the Florida Building Code.

Pursuant to Section 10.03.03 of this ordinance, buildings, structures, and facilities that are exempt from the Florida Building Code, including substantial improvement or repair of substantial damage of such buildings, structures and facilities, shall be designed and constructed in accordance with the flood load and flood resistant construction requirements of ASCE 24. Structures exempt from the Florida Building Code that are not walled and roofed buildings shall comply with the requirements of Section 10.13.00 of this ordinance.

10.09.03. Buildings and structures seaward of the coastal construction control line.

If extending, in whole or in part, seaward of the coastal construction control line and also located, in whole or in part, in a flood hazard area:

A.

Buildings and structures shall be designed and constructed to comply with the more restrictive applicable requirements of the Florida Building Code, Building Section 3109 and Section 1612 or Florida Building Code, Residential Section R322.

B.

Minor structures and non-habitable major structures as defined in F.S. § 161.54 shall be designed and constructed to comply with the intent and applicable provisions of this ordinance and ASCE 24.

10.09.04. Subdivisions.

10.09.05. Minimum requirements.

Subdivision proposals, including proposals for manufactured home parks and subdivisions, shall be reviewed to determine that:

A.

Such proposals are consistent with the need to minimize flood damage and will be reasonably safe from flooding;

B.

All public utilities and facilities such as sewer, gas, electric, communications, and water systems are located and constructed to minimize or eliminate flood damage; and

C.

Adequate drainage is provided to reduce exposure to flood hazards; in Zones AH and AO, adequate drainage paths shall be provided to guide floodwaters around and away from proposed structures.

10.09.06. Subdivision Plats.

Where any portion of proposed subdivisions, including manufactured home parks and subdivisions, lies within a flood hazard area, the following shall be required:

A.

Delineation of flood hazard areas, floodway boundaries and flood zones, and design flood elevations, as appropriate, shall be shown on preliminary plats;

B.

Where the subdivision has more than fifty (50) lots or is larger than five (5) acres and base flood elevations are not included on the FIRM, the base flood elevations determined in accordance with Section 10.04.02(A) of this ordinance; and

C.

Compliance with the site improvement and utilities requirements of Section 10.09.07 through Section 10.09.17 of this ordinance.

10.09.07. Site improvements, utilities and limitations.

10.09.08. Minimum requirements.

All proposed new development shall be reviewed to determine that:

A.

Such proposals are consistent with the need to minimize flood damage and will be reasonably safe from flooding;

B.

All public utilities and facilities such as sewer, gas, electric, communications, and water systems are located and constructed to minimize or eliminate flood damage; and

C.

Adequate drainage is provided to reduce exposure to flood hazards; in Zones AH and AO, adequate drainage paths shall be provided to guide floodwaters around and away from proposed structures.

10.09.09. Sanitary sewage facilities.

All new and replacement sanitary sewage facilities, private sewage treatment plants (including all pumping stations and collector systems), and on-site waste disposal systems shall be designed in accordance with the standards for onsite sewage treatment and disposal systems in Chapter 64E-6, F.A.C. and ASCE 24 Chapter 7 to minimize or eliminate infiltration of floodwaters into the facilities and discharge from the facilities into flood waters, and impairment of the facilities and systems.

10.09.10. Water supply facilities.

All new and replacement water supply facilities shall be designed in accordance with the water well construction standards in Chapter 62-532.500, F.A.C. and ASCE 24 Chapter 7 to minimize or eliminate infiltration of floodwaters into the systems.

10.09.11. Limitations on sites in regulatory floodways.

No development, including but not limited to site improvements, and land disturbing activity involving fill or regrading, shall be authorized in the regulatory floodway unless the floodway encroachment analysis required in Section 10.04.03(A) of this ordinance demonstrates that the proposed development or land disturbing activity will not result in any increase in the base flood elevation.

10.09.12. Limitations on placement of fill.

Subject to the limitations of this ordinance, fill shall be designed to be stable under conditions of flooding including rapid rise and rapid drawdown of floodwaters, prolonged inundation, and protection against flood-related erosion and scour. In addition to these requirements, if intended to support buildings and structures (Zone A only), fill shall comply with the requirements of the Florida Building Code.

10.09.13. Limitations on sites in coastal high hazard areas (Zone V).

In coastal high hazard areas, alteration of sand dunes and mangrove stands shall be permitted only if such alteration is approved by the Florida Department of Environmental Protection and only if the engineering analysis required by Section 10.04.03(D) of this ordinance demonstrates that the proposed alteration will not increase the potential for flood damage. Construction or restoration of dunes under or around elevated buildings and structures shall comply with Section 10.13.08(C) of this ordinance.

10.09.14. Limitations on Hazardous Materials.

Structural storage facilities for chemicals, explosives, buoyant materials, flammable liquids, or other hazardous or toxic materials shall be located outside of special flood hazard areas to the extent possible and feasible. If these facilities cannot be located outside special flood hazard areas, the design and construction of such facilities shall be dry flood proofed in accordance with the Florida Building Code.

10.09.15. Limitations on Alteration of Natural Functions.

Limit the alteration of natural floodplains, stream channels, and natural protection barriers which are involved in the accommodation of floodwaters. This includes restrictions or prohibitions on unnecessary or incompatible filling, grading, dredging, drainage, and other development which will result in a damaging increase in erosion, habitat, destruction, or adverse impacts on the water quality treatment function of the floodplain.

10.09.16. Solid Waste Disposal Sites.

New solid waste disposal sites within special flood hazard areas are prohibited.

10.09.17. Forestry Activities.

Adequate buffers to reduce any adverse impact from forestry activities are required.

( Ord. No. 2016-07 , § 2, 3-10-16)