A. 
General. Unless otherwise recommended in the approved soil engineering and/or engineering geology report, cuts shall conform to the provisions of this section.
B. 
Slope. The slope of cut surfaces shall be no steeper than is safe for the intended use. Cut slopes shall be no steeper than two horizontal to one vertical.
C. 
Drainage and Terracing. Drainage and terracing shall be provided as required by Section 21.20.040.
(Ord. 202-81 § 1, 1981)
A. 
General. Unless otherwise recommended in the approved soil engineering report, fills shall conform to the provisions of this section.
In the absence of an approved soil engineering report these provisions may be waived for minor fills not intended to support structures.
B. 
Fill Location. Fill slopes shall not be constructed on natural slopes steeper than two to one.
C. 
Preparation of Ground. The ground surface shall be prepared to receive fill by removing vegetation, noncomplying fill, topsoil and other unsuitable materials scarifying to provide a bond with the new fill, and, where slopes are steeper than five to one, and the height is greater than five feet, by benching into sound bedrock or other competent material as determined by the soils engineer. The bench under the toe of a fill on a slope steeper than five to one shall be at least ten feet wide. The area beyond the toe of fill shall be sloped for sheet overflow or a paved drain shall be provided. Where fill is to be placed over a cut, the bench under the toe of fill shall be at least ten feet wide but the cut must be made before placing fill and approved by the soils engineer and engineering geologist as suitable foundation for fill. Unsuitable soil is soil which, in the opinion of the Director or the civil engineer or the soils engineer or the geologist, is not competent to support other soil or fill, to support structures or to satisfactorily perform the other functions for which the soil is intended.
D. 
Fill Material. Detrimental amounts of organic material shall not be permitted in fills. Except as permitted by the Director no rock or similar irreducible material with a maximum dimension greater than twelve inches shall be buried or placed in fills.
Exception: The Director may permit placement of larger rock when the soils engineer properly devises a method or placement, continuously inspects its placement and approves the fill stability. The following conditions shall also apply:
1. 
Prior to issuance of the grading permit, potential rock disposal areas shall be delineated on the grading plan.
2. 
Rock sizes greater than twelve inches in maximum dimension shall be ten 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 of ninety percent of maximum density as determined by California Standard Specifications. Field density shall be determined in accordance with California Standard Specifications or equivalent as approved by the Director.
F. 
Slope. The slope of fill surfaces shall be no steeper than is safe for the intended use. Fill slopes shall be no steeper than two horizontal to one vertical.
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 Section 21.20.040.
(Ord. 202-81 § 1, 1981)
A. 
General. The setbacks and other restrictions specified by this section are minimum and may be increased by the Director or by the recommendations of a civil engineer, soils engineer or engineering geologist, if necessary for safety and stability or to prevent damage of adjacent properties from deposition or erosion or to provide access for slope maintenance and drainage. Retaining walls may be used to reduce the required setbacks when approved by the Director.
B. 
Setbacks from property lines. The tops of cuts and toes of fill slopes shall be set back from the outer boundaries of the permit area, including sloperight areas and easements, in accordance with Figure No. 1 and Table No. 1.
FIGURE 1 GOES HERE (missing)
Table 1
Required Setbacks from Permit Area Boundary (in feet)
 
Setbacks
H
a
b
Under 5
0
1
5-30
H/2
H/5
Over 30
15
6
C. 
Design standards for setbacks. Setbacks between graded slopes (cut or fill) and structures shall be provided in accordance with Figure No.2.
FIGURE 2 GOES HERE (missing)
(Ord. 202-81 § 1, 1981)
A. 
General. Unless otherwise indicated on the approved grading plan, drainage facilities and terracing shall conform to the provisions of this section.
B. 
Terrace.
1. 
Terraces at least six feet in width shall be established at not more than thirty-foot vertical intervals on all cut or fill slopes to control surface drainage and debris except that where only one terrace is required, it shall be at mid-height. For cut or fill slopes greater than sixty feet and up to one hundred twenty feet in vertical height, one terrace at approximately mid-height shall be twelve feet in width. Terrace widths and spacing for cut and fill slopes greater than one hundred twenty feet in height shall be designed by the civil engineer and approved by the Director. Suitable access shall be provided to permit proper cleaning and maintenance.
2. 
Swales or ditches on terraces shall have a minimum gradient of five percent and must be paved with reinforced concrete not less than three inches in thickness or an approved equal paving. They shall have a minimum depth at the deepest point of one foot and a minimum paved width of five feet.
3. 
A single run of swale or ditch shall not collect runoff from a tributary area exceeding thirteen thousand five hundred square feet (projected) without discharging into a down drain.
C. 
Subsurface Drainage. Cut and fill slopes shall be provided with subsurface drainage as necessary for stability.
D. 
Disposal.
1. 
All drainage facilities shall be designed to carry waters to the nearest practicable drainage way approved by the Director and/or other appropriate jurisdiction as a safe place to deposit such waters. Erosion of ground in the area of discharge shall be prevented by installation of nonerosive down drains or other devices.
2. 
Building pads shall have a drainage gradient of two percent toward approved drainage facilities, unless waived by the Director.
Exception: The gradient from the building pad may be one percent if all the following conditions exist throughout the permit area:
1.
No proposed fills are greater than ten feet in maximum depth.
2.
No proposed finish cut or fill slope faces have a vertical height in excess of ten feet.
3.
No existing slope faces, which have a slope face steeper than ten horizontally to one vertically, have a vertical height in excess of ten feet.
E. 
Interceptor Drains. Paved interceptor drains shall be installed along the top of all cut slopes where the tributary drainage area above slopes towards the cut has a drainage path greater than forty feet measured horizontally. Interceptor drains shall be paved with a minimum of three inches of concrete or gunite and reinforced. They shall have a minimum depth of twelve inches and a minimum paved width of thirty inches measured horizontally across the drain. The slope of drain shall be approved by the Director.
(Ord. 202-81 § 1, 1981)
A. 
During hauling operations, required signs and flagmen shall comply with the State of California Manual of Warning Signs, Lights and Devices for use in the performance of work on highways and also as directed by the Director. Lane closures or interruptions in normal flow of public traffic along with proposed lights, signs and barricades shall be approved in advance. Notice shall be given to Fire, Police and Public Works Department prior to lane closures.
B. 
Care shall be taken to prevent spillage on haul routes. Accidental spills shall be removed immediately and the area cleaned. In the event spills are not immediately removed the Director may have the spills removed using the security for the grading plan.
C. 
Until final acceptance, the contractor shall keep the site clean and free of rubbish and debris during all phases of construction and hauling including any work suspension period.
D. 
The contractor shall maintain a program of dust control satisfactory to the Director to prevent air pollution as well as discomfort or damage to adjacent properties.
(Ord. 202-81 § 1, 1981)
A. 
Grading and stockpiling around trees shall be kept outside of the area half way from the trunk to the outer limits of the tree canopy.
B. 
Where a grade around a tree is to be lowered, a protective retaining wall or box shall be constructed. If the cut lowers the water table, the tree must be supplied with water.
C. 
When the grade around a tree is raised six inches or more, a tree well shall be constructed.
D. 
All disturbed or damaged trees shall be repaired and treated as directed by the Director.
(Ord. 202-81 § 1, 1981)