(i) All new construction and substantial improvements shall be anchored to prevent flotation, collapse, or lateral movement of the structure.

(ii) All manufactured homes must be anchored to prevent flotation, collapse or lateral movement, and shall be installed using methods and practices that minimize flood damage. Anchoring methods may include, but are not limited to, use of over-the-top or frame ties to ground anchors.

(i) All new construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.

(ii) All new construction and substantial improvements shall be constructed using methods and practices that minimize flood damage.

(iii) Electrical, heating, ventilation, plumbing and air-conditioning equipment and other service facilities shall be designed and/or otherwise elevated or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

(iv) Within Zones AH or AO, adequate drainage paths shall be constructed around structures or slopes to guide floodwaters around and away from proposed structures.

(i) All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system;

(ii) New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharge from the systems into floodwaters; and

(iii) On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding.

(i) All subdivision proposals shall be consistent with the need to minimize flood damage.

(ii) All proposed improvements such as water, sewer, natural gas, telephone and electrical facilities shall be located and constructed in a manner which will minimize damage in the event of a flood.

(iii) All subdivision proposals shall have adequate drainage provided to reduce exposure to flood damage.

(iv) Where base flood elevation data has not been provided or is not available from another authoritative source, it shall be generated for subdivision proposals which contain fifty (50) lots or five (5) acres, whichever is less. The floodplain requirements for subdivision plats, detailed in this chapter, apply to all subdivision proposals.

(v) It is the responsibility of the subdivider to provide all necessary information regarding flood protection measures at the time the preliminary plat is presented for consideration by the Planning Commission.

(i) New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to or above the flood protection elevation.

(ii) Fully enclosed areas below the lowest floor that are subject to flooding are prohibited, or shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. 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:

(iii) For Zones AH and AO drainage paths are required around structures on slopes to drain floodwaters away from proposed structures.

(iv) A garage attached to a residential structure, constructed with the garage floor slab below the flood protection elevation, must be designed to allow for the automatic entry and exit of floodwaters.

(v) For A Zones (A, AE, A1-30, AH, AO). Residential construction, new or substantial improvement, shall have the lowest floor, including basement, elevated to or above the base flood elevation.

Upon completion of the structure, certification by a registered professional engineer or surveyor that the elevation requirements of the lowest floor, including basement, of this section have been satisfied shall be provided to the Floodplain Administrator for verification.

(vi) For V Zones (VE, V1-30 and V). Residential construction, new or substantial improvement, shall:

A registered professional engineer or architect shall develop or review the structural design, specifications and plans for the construction, and shall certify that the design and methods of construction to be used are in accordance with accepted standards of practice for meeting the provisions of this section.

Upon completion of construction, certification by a registered professional engineer or architect that these design standards have been satisfied, and certification by a registered professional engineer or surveyor that the elevation requirements of the bottom of the lowest structural member of the lowest floor, excluding pilings and columns, of this section have been satisfied shall be provided to the Floodplain Administrator for verification.

(i) Be floodproofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water;

(ii) Have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy;

(iii) Be certified by a registered professional engineer or architect that the standards of this subsection are satisfied. Such certifications shall be provided to the official Planning Department.

(iv) Have the space below the lowest floor, usable solely for parking of vehicles, building access, or storage, either free of obstruction or constructed with nonsupporting breakaway walls, open wood lattice-work, or insect screening intended to collapse under wind and water loads without causing collapse, displacement, or other structural damage to the elevated portion of the building or supporting foundation system. For the purposes of this section, a breakaway wall shall have a design safe loading resistance of not less than ten (10) and no more than twenty (20) pounds per square foot;

(v) Applicants floodproofing nonresidential buildings shall be notified that flood insurance premiums will be based on rates that are one (1) foot below the floodproofed level (e.g., a building constructed to the base flood level will be rated as one (1) foot below that level).

(vi) For Zones AH and AO drainage paths are required around structures on slopes to drain floodwaters away from proposed structures.

(vii) For A Zones (A, AE, A1-30, AH, AO). Nonresidential construction, new or substantial improvement, shall have the lowest floor elevated to conform with the standards in subsections (b)(1)(ii) and (b)(1)(v) of this section.

(viii) For V Zones (VE, V1-30, V). Floodproofing of nonresidential structures is prohibited. All structures must be elevated and constructed according to the requirements set forth in subsection (b)(1)(vi) of this section.

(i) Be on the site for fewer than one hundred eighty (180) consecutive days; or

(ii) Be fully licensed and ready for highway use, on its wheels or jacking system, and attached to the site only by quick disconnect type utilities and security devices;

(iii) Meet the permit requirements of KMC 14.30.040 and the applicable elevation and anchoring requirements for manufactured homes in this chapter.

(i) For A Zones (A, AE, A1-30, AH, AO). Appurtenant structures used solely for parking of vehicles or storage may be constructed such that the floor is below the base flood elevation, provided the structure is designed and constructed in accordance with the following requirements:

Detached garages, storage structures and other appurtenant structures not meeting the above standards must be constructed in accordance with all applicable standards as required for A Zones.

Upon completion of the structure, certification that the requirements of this section have been satisfied shall be provided to the Floodplain Administrator for verification.

(ii) For V Zones (VE, V1-30 and V). Floodproofing of nonresidential structures is prohibited. All structures must be elevated and constructed according to the requirements set forth for residential construction.

(i) All encroachments are prohibited, including fill, new construction, substantial improvements and other development within the adopted regulatory floodway unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment would not result in any increase in flood levels within the community during occurrence of base flood discharge.

(ii) If subsection (b)(1) of this subsection is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of this section.

(iii) Encroachments within the adopted regulatory floodway that would result in an increase in base flood elevations may be permitted; provided, that the City first applies for and fulfills the requirements for a conditional letter of map revision (CLOMR), and receives approval from the Federal Insurance Administrator to revise the FIRM and FIS in accordance with notification to other entities.