5.3. PCSR 04-10-2007 - Laserfiche WebLink

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(2) Rock sizes greater than twelve (12) inches in maximum dimension shall be ten (10) feet or more below grade, measured vertically. (3) Rocks shall be placed so as to assure filling of all voids with fines. (e) Compaction. All fills shall be compacted to a minimum ninety (90) percent of maximum density as determined by the specified density method. In-place density shall be determined in accordance with ASTM D698-70. (f) Slope. The slope of fill surfaces shall be no steeper than is safe for the intended use or three horizontal to one (3 :1) vertical, whichever is less. (g) Drainage and terracing. Drainage and terracing shall be provided and the area above fill slopes and the surfaces of terraces shall be graded and paved as required by the Engineering Design Guidelines. Setbacks. (a) Generally. 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 shown on the grading plan. (b) Top of cut slope. The top of cut slopes shall be made not nearer to a site boundary line than one-fifth of the vertical height of cut or a minimum of two (2) feet, which ever is greater. The setback may need to be increased for any required interceptor drains. (c) Toe of fill slope. The toe of fill slopes shall be made not nearer to the site boundary line than one-half the height of the slope or a minimum of two (2) feet which ever is greater. Where a fill slope is to be located near the site boundary and the adjacent off-site property is developed, special precautions shall be incorporated in the work as the city 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) Provisions for retaining 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 city may approve alternate setbacks. The city may require an investigation and recommendation by a qualified engineer or engineering geologist to demonstrate that the intent of this section has been satisfied. Erosion control. Purpose The purpose of this chapter is to protect surface water quality and safeguard private propertry and public welfare by establishing erosion control . Scope This chapter sets forth rules and regulations to related to erosion control; establishes the administrative procedure for review of plans and inspection of Erosion Control practices 9