Township of Hazlet, NJ Flood Hazard Reduction

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

All manufactured homes shall be anchored to resist flotation, collapse, or lateral movement. Methods of anchoring may include, but are not to be limited to, use of over-the-top or frame ties to ground anchors. This requirement is in addition to applicable state and local anchoring requirements for resisting wind forces.

Construction materials and methods.

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

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

Utilities.

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

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;

On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding; and

(4)

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

Subdivision proposals.

All subdivision proposals shall be consistent with the need to minimize flood damage;

All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical, and water systems located and constructed to minimize flood damage;

All subdivision proposals shall have adequate drainage provided to reduce exposure to flood damage; and

(4)

Base flood elevation data shall be provided for subdivision proposals and other proposed development that contains at least 50 lots or five acres, whichever is less.

Enclosure openings. All new construction and substantial improvements having fully enclosed areas below the lowest floor that are usable solely for parking of vehicles, building access, or storage in an area other than a basement and that are subject to flooding 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:

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 flooding shall be provided;

The bottom of all openings shall be no higher than one foot above grade; and

Openings may be equipped with screens, louvers, or other covering or devices, provided that they permit the automatic entry and exit of floodwaters.

§ 219-17 Specific standards.

In all areas of special flood hazards where base flood elevation data have been provided as set forth in § 219-7, Basis for establishing areas of special flood hazard, or in § 219-14B, Use of other base flood data, the following standards are required:

Residential construction.

New construction and substantial improvement of any residential structure shall have the lowest floor, including a basement, together with the attendant utilities and sanitary facilities, elevated to at least one foot above the base flood elevation;

Within any AO Zone on the municipality's DFIRM, all new construction and substantial improvement of any residential structure shall have the lowest floor, including a basement, elevated above the highest adjacent grade, at least as high as the depth number specified in feet, or at least two feet if no depth number is specified; and

Adequate drainage paths are required around structures on slopes to guide floodwaters around and away from proposed structures.

Nonresidential construction. New construction and substantial improvement of any commercial, industrial, or other nonresidential structure shall either:

Have the lowest floor, including a basement, elevated to the level of the base flood elevation; and

Within any AO Zone on the municipality's DFIRM, all new construction and substantial improvement of any commercial, industrial, or other nonresidential structure shall have:

(a)

The lowest floor, including a basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet, or at least two feet if no depth number is specified, with required adequate drainage paths around structures on slopes to guide floodwaters around and away from proposed structures; or

[1]

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

[2]

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

[3]

Be certified by a registered professional engineer or architect that the design and methods of construction are in accordance with accepted standards of practice for meeting the applicable provisions of this section. Such certification shall be provided to the official as set forth in § 219-14C(2)(b).

Manufactured homes.

Manufactured homes shall be anchored in accordance with § 219-16A(2).