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EROSION AND SEDIMENTATION CONTROL § 10-18 <br /> (2) Cut Slopes. Under the following soil conditions, no cut may be steeper in slope <br /> than the ratio of its horizontal to its vertical distance as shown below: <br /> 1/2 horizontal to 1 vertical in unweathered rock; <br /> 11 horizontal to 1 vertical in decomposed rocks or rock and soil mixture; <br /> 2 horizontal to 1 vertical in low plasticity soils; <br /> 3 horizontal to 1 vertical in high plasticity soils for cuts up to five feet in <br /> vertical depths. Slopes for cuts exceeding this depth shall be as <br /> recommended in the engineer's soils report. <br /> (3) Fill Slopes. Under the following soil conditions, no fill may be steeper in slope <br /> than the ratio of its horizontal to its vertical distance as shown below: <br /> 11 horizontal to 1 vertical in rock and soil mixture; <br /> 2 horizontal to 1 vertical in low plasticity soils; <br /> 3 horizontal to 1 vertical in high plasticity soils for fills up to five feet in <br /> vertical height. Slopes for fills exceeding this height shall be as <br /> recommended in the engineer's soils report. <br /> (1983 CC, c 10, art 3, sec 10-18; am 1986, ord 86-6, sec 1; am 2001, ord 01-108, sec 1.) <br /> Section 10-19. Distance from property line of cut or fill slope. <br /> (a) The horizontal distance from the top of a cut slope or the bottom of a fill slope to the <br /> adjoining property line shall be as follows: <br /> Height of Cut or Fill Distance from Property Line <br /> (in feet) <br /> Zero feet to 4 feet 2 <br /> More than 4 feet to 8 feet 4 <br /> More than 8 feet to 15 feet 6 <br /> More than 15 feet 8 <br /> These requirements may be modified by the director of public works when cuts <br /> or fills are supported by retaining walls, approved by the building department, or <br /> when the permittee submits an engineer's soils report stating that the soil <br /> conditions will permit a lesser horizontal distance without causing damage or <br /> danger to the adjoining property. <br /> (b) A retaining wall of six feet and over shall be designed by a professional engineer <br /> when deemed necessary by the director of public works. Setback requirements of <br /> the County zoning ordinance are referenced herein and the State land use <br /> commission and County zoning ordinance and other agencies' requirements on <br /> shoreline improvements shall be complied with. <br /> (1983 CC, c 10, art 3, sec 10-19; am 2001, ord 01-108, sec 1.) <br /> 10-11 <br />