§ 7B-10. General standards.

In all areas of special flood hazards the following standards are required:

(a)

Anchoring.

(1)

All new construction and substantial improvements shall be designed (or modified) and adequately anchored to prevent flotation, collapse or lateral movement of the structure, resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy.

(2)

All mobilehomes shall be anchored to resist flotation, collapse, or lateral movement by providing over-the-top and frame ties to ground anchors. Specific requirements shall be that:

(i)

Over-the-top ties be provided at each of the four (4) corners of the mobilehome, with two (2) additional ties per side at intermediate locations, with manufactured homes less than fifty feet (50') long requiring one additional tie per side;

(ii)

Frame ties be provided at each corner of the home with five (5) additional ties per side at intermediate points, with manufactured homes less than fifty feet (50') long requiring four (4) additional ties per side;

(iii)

All components of the anchoring system be capable of carrying a force of four thousand eight hundred (4,800) pounds; and

(iv)

Any additions to the manufactured home be similarly anchored.

(b)

Construction Materials and Methods.

(1)

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

(2)

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

(3)

All new construction and substantial improvements with fully enclosed areas below the lowest floor (including basement) 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 flood waters. Designs for meeting this requirement must either be certified by a registered professional engineer or architect licensed in the state of California or meet or exceed the following minimum criteria:

(i)

Two (2) openings having a total net area of not less than one (1) square inch for every square foot of enclosed area subject to flooding shall be provided; and

(ii)

The bottom of all openings shall be no higher than one foot (1') above grade. Openings may be equipped with screens, louvers, valves or other coverings or devices provided that they permit the automatic entry and exit of flood waters.

(4)

All new construction and substantial improvements shall be constructed with electrical, heating, ventilation, plumbing and air conditioning equipment and other service facilities that are designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

(c)

Utilities.

(1)

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

(2)

New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharge from the systems into flood waters; and,

(3)

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

(d)

Subdivision Proposals and Other Proposed New Development.

(1)

All subdivision proposals and other proposed new development shall meet the permit requirements of this chapter;

(2)

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

(3)

All subdivision proposals and other proposed new development 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 new development (including proposals for manufactured home parks and subdivisions) that contain at least fifty (50) lots or five (5) acres (whichever is less).

(Ord. No. 5700 § 1, 2007; Ord. No. 4887 §§ 3 (part), 7, 1995; Ord. No. 3826, 1988.)