(A) General requirements. Cut and fill slopes must be setback from site boundaries in accordance with this section. Setback dimensions must be horizontal distances measured perpendicular to the site boundary. The grading design must require that the property line between adjacent lots will be at the apex of the berm at the top of the slope. Property lines between adjacent lots cannot be located on a graded slope equal to five horizontal to one vertical or steeper.
(B) Top of cut slope. The top of cut slopes must not be made nearer to a site boundary line than one-fifth of the height of cut with a minimum of two feet and a maximum of ten feet. The setback may need to be increased for any required intercepter drains.
(C) Toe of fill slope. The toe of a fill slope must not be made nearer to the site boundary line than one-half of the height of the slope with a minimum of two feet and a maximum of 20 feet. Where a fill slope is to be located near the site boundary and the adjacent off-site property is developed to such grading, special precautions must be incorporated in the work as the City Engineer or Building Official deems necessary to protect the adjoining property from damage as a result of such grading. These precautions may include but are not limited to:
(1) Additional setbacks;
(2) Provision for retaining or slough walls;
(3) Mechanical or chemical treatment of the fill slope surface to minimize erosion; or
(4) Provisions for the control of surface waters.
(D) Modification of slope location. The setback and other restrictions imposed by this section may be increased where unusual soil or geologic conditions make such increase necessary for safety or stability or may be modified upon investigation and recommendation by a soil engineer or geologist where such modification will provide equivalent safety, stability and protection, and the City Engineer or Building Official so finds.
(Ord. 1103, passed 3-7-05)