§ 24.15.015. Standard buffer for landslide hazard areas and marine bluff hazard areas.

Development in a landslide and marine bluff hazard areas requires an undisturbed buffer of approved vegetation, except as otherwise provided for in this chapter. The required buffer shall be the greater amount of the following:

A.

Fifty feet from toe and top of slope; or

B.

A distance measured as follows:

1.

Landslide Hazard Areas. A buffer from the toe and top of slope equal to the following: The distance measured from the toe of slope upward at a slope of 2:1 (horizontal to vertical) to a point that intersects with the existing topography of the site; or

2.

Marine Bluff Hazard Areas. A distance from the ordinary high water mark landward at a slope of 2:1 (horizontal to vertical) which intersects with the existing topography of the site; or

C.

The minimum distance recommended by the geotechnical professional in the geological assessment, based on review of the extent of unstable landform and definition of the potential hazard area from each site investigation, as measured outward from the toe and top of slope.

D.

Buffers for marine bluff hazard areas shall also comply with TCC 24.25.045—24.25.055, and all applicable sections of the Shoreline Master Program for the Thurston Region, as amended.

(Ord. No. 14773, § 3(Att. B), 7-24-2012)