A. General Requirements: Cut and fill slopes shall be set back from site boundaries in accordance with this section. Setback dimensions shall be horizontal distances measured perpendicular to the site boundary. Setback dimensions shall be as shown in figure J108.1 of the 2003 international building code, as amended. (Ord. 04-4146, 11-15-2004)
B. Top Of Cut Slope: The top of cut slope shall be made no closer to a site boundary line than one-fifth (1/5) of the vertical height of cut, with a minimum of two feet (2') and a maximum of ten feet (10'). The setback may need to be increased for any required interceptor drains.
C. Toe Of Fill Slope: The toe of fill slope shall be made no closer to the site boundary line than one-half (1/2) the height of slope, with a minimum of two feet (2') and a maximum of twenty feet (20'). Where a fill slope is to be located near the site boundary and the adjacent off site property is already developed, special precautions may be required if, in the opinion of the building official, such precautions are necessary to protect the adjoining property from damage. These precautions may include, but are not limited to, the following:
1. Additional setbacks.
2. Provision for retaining walls or slough walls.
3. Mechanical or chemical treatment of the fill slope surface to minimize erosion.
4. Provisions for the control of surface waters.
D. Modification Of Slope Location: The building official may approve alternate setbacks. The building official may also require an investigation and recommendation by a civil engineer if, in the opinion of the building official, such investigation is reasonably necessary to demonstrate the grading has complied with the intent of this section. (1978 Code §8-17)