A. 
All grading shall be performed in accordance with the provisions of this chapter and with all rules and regulations established by the City Engineer and shall be in accordance with the zoning and subdivision regulations and the approved Master Plan for the area in which the grading is to be done.
B. 
Property lines shall not be located midway between top and bottom of cut or fill slopes when the slope is greater than fifteen percent (15%).
C. 
No person shall conduct any grading, excavation or filling, including the export or import of earth material, between the hours of 5:00 p.m. and 7:00 a.m. on any day nor on Sunday at any time.
A. 
If at any stage of work on an excavation or fill the City Engineer determines, by inspection, that further work as authorized by an existing permit is likely to endanger any property or public way, he may require, as a condition to allow the work to continue, that plans for such work be amended to include adequate safety precautions. Safety precautions may include, but shall not be limited to, specifying a flatter exposed slope or construction of additional drainage facilities, berms, terracing, compaction, cribbing, retaining walls or buttress fills, slough walls, desilting basins, check dams, benching, pavement, revetments or diversion walls.
B. 
No person shall excavate or fill so as to cause falling rocks, soil or debris in any form to fall, slide or flow onto adjoining properties.
C. 
The City Engineer may impose such regulations with respect to access routes to or from grading sites as he shall determine are required in the interest of the public health, safety and welfare, and safety precautions involving pedestrian or vehicular traffic. Traffic control devices, including flagmen, lights, signs and markers, shall be used at appropriate places along the designated routes of access to the site; temporary no-parking restrictions may be imposed with the approval of the City along such routes when determined necessary. The City Engineer may designate the routes of ingress and egress to or from a grading site when it is determined that such is necessary in the interest of the public health, safety and welfare. Such designation of routes shall in all cases take into consideration the most practical means of transporting the earth materials to or from the grading site consonant with the safety and welfare of residents along the routes.
D. 
All loads shall be properly trimmed and watered, or otherwise secured so as to prevent spillage from the equipment. The permittee shall be responsible for the removal of all spilled material along the access routes during the performance of the work specified in the permit.
A. 
No cut slopes shall exceed a vertical height of one hundred (100) feet unless horizontal benches with a minimum width of thirty (30) feet are installed at each one hundred (100) feet of vertical height.
B. 
No excavation shall be made with a cut face steeper in slope than two (2) horizontal to one (1) vertical unless a soil report is submitted by a licensed soils engineer showing, through subsurface exploration, that the material making up the slope of the excavation and the underlying bedrock is capable of standing on a steeper slope.
(1) 
No slopes shall be cut steeper than the bedding planes in any formation where the cut slope will lie on the dip side of the strike line.
(2) 
Where the excavation exposes strata above the top of the cut which will permit the entry of water along bedding planes, this area shall be sealed with a compacted soil blanket having a minimum thickness of two (2) feet. This soil shall be relatively impervious and shall be approved by the soils engineer and the City Engineer before placement.
(3) 
If the material of the slope is of such composition and character as to be unstable under the anticipated maximum moisture content, the slope angle shall be reduced to a stable value. This requirement shall be confirmed by the soils engineer's written certification following laboratory testing.
C. 
Paved interceptor benches on cut slopes shall have a minimum width of eight (8) feet and shall be spaced at intervals of twenty-five (25) feet measured vertically. The longitudinal slope of interceptor benches shall be not less than three percent (3%) nor more than eight percent (8%). Any change in rate of grade within these allowable slopes shall increase the grade in the direction of flow. A single run of an interceptor bench shall not exceed one hundred fifty (150) feet to a catch basin. The design of catch basins, inlet and outlet structures shall be shown on the plans.
D. 
Berms shall be constructed at the top of all cut slopes.
E. 
Finished ground shall slope a minimum of two percent (2%) from any building to an approved drainage device. The drainage system shall be an adequately designed collection system of catch basins and drain lines which conduct the water to its natural point of discharge. All systems shall be designed to carry the tributary flow from a ten-year storm, unless the City Engineer requires a design storm of lesser frequency to be in the best interest of the public safety. Twelve-inch diameter shall be the smallest acceptable pipe diameter in these systems. Sump area inlet capacities shall be designed for a storm of fifty-year frequency. All other inlets shall be designed on the ten-year storm frequency.
A. 
No fill slope shall exceed a vertical height of one hundred (100) feet unless horizontal benches with a minimum width of thirty (30) feet are installed at each one hundred (100) feet of vertical height.
B. 
No fill shall be made that creates an exposed surface steeper in slope than two (2) horizontal to one (1) vertical unless a soil report is submitted by a licensed soils engineer showing, through subsurface exploration, that the material making up the fill and the underlying bedrock is capable of standing on a steeper slope.
C. 
Interceptor paved terraces on fill slopes shall have a minimum width of eight (8) feet and shall be spaced at intervals of twenty-five (25) feet measured vertically. The longitudinal slope of interceptor benches shall be a minimum of three percent (3%) and a maximum of eight percent (8%). Any change in the rate of grade within these allowable slopes shall increase the grade in the direction of flow. A single run of an interceptor bench shall not exceed one hundred fifty (150) feet to a catch basin. The design of the catch basins, inlet and outlet structures shall be shown on the plans.
D. 
All man-made fills shall be compacted to a minimum of ninety-percent relative compaction as determined by ASTM Method D 1557-64T. If the required degree of compaction cannot be attained on sloped surfaces, the slope shall be cut back until the compacted inner core is exposed. Fills which do not exceed twelve (12) inches in depth need not be compacted but such fills shall not change the existing drainage pattern. Every man-made fill shall be tested for relative compaction by a soil testing agency. The results of the tests shall be certified by this agency and submitted to the City Engineer before the fill can be approved.
E. 
The toe of fill slopes shall not be made nearer to a property line than one-half (1/2) the height of the fill.
F. 
Fill shall not be placed on slopes exceeding one (1) vertical to ten (10) horizontal. In these areas, existing slopes must be benched prior to the placement of fills.
G. 
Berms shall be constructed at the top of all fill slopes.
H. 
All fills shall be underdrained.
I. 
Finished ground shall slope a minimum of two percent (2%) from any building to an approved drainage device. The drainage system shall be an adequately designed collection system of catch basins and drain lines which conduct the water to its natural point of discharge. All systems shall be designed to carry the tributary flow from a ten-year storm, unless the City Engineer requires a design storm of lesser frequency, to be in the best interest of the public safety. Twelve-inch diameter shall be the smallest acceptable pipe diameter in these systems. Sump area inlet capacities shall be designed for a storm of fifty-year frequency. All other inlets shall be designed on the ten-year storm frequency.
J. 
Special drainage systems other than described under Subsection I have to be submitted in details prepared by a licensed professional engineer and substantiated by a soils engineer's recommendations.
Where a combined cut and fill slope exceeds twenty-five (25) feet in height, the required drainage bench shall be placed at the top of the cut slope. The effect of surcharge of the fill material on the cut sections shall be investigated by a soils engineer and a report shall be submitted to the City Engineer with the application.
A. 
Buildings shall be located clear of the toe of all cut or fill slopes a minimum of one-half (1/2) of the height of the slope.
B. 
Where a fill exceeds one hundred (100) feet in vertical height, no building or permanent structure shall be built on such fill within seven (7) years from the completion of the fill.
C. 
If buttress fills are to be used for lateral support of unstabilized material, the design and calculations must be submitted by a licensed engineer along with the soils report on the foundation soil. All buttress fills shall be completely underdrained. The exposed surface shall not have a slope exceeding one (1) vertical to two (2) horizontal.
D. 
Areas tributary to a specific point of discharge shall not be altered so that stormwater is diverted to a different drainage area.
E. 
Relocation of natural watercourses or fills placed over natural watercourses will be permitted only if the stream is totally enclosed in a conduit designed to carry the tributary flow from a storm of fifty-year frequency.
A. 
All fill and cut slopes which are determined to be subject to erosion shall be planted with an approved grass seed or ground cover, irrigated and maintained by the owner. No portion of the performance bond being held for planting will be released until a stand of grass or ground cover is growing. When slope heights exceed twenty (20) feet, approved shrubs having a minimum one-gallon size shall be planted at ten (10) feet on center in both directions or trees planted at twenty (20) feet on center, if approved by the City Engineer.
B. 
When project work must be suspended for a period of thirty (30) days or longer, existing slopes and areas stripped of plant growth shall be seeded with a fast-growing seed to help control erosion before expiration of the work. Earthen ditches subject to erosion shall be equipped with temporary energy dissipating devices to minimize the effects of the flowing water.
C. 
Drainage devices discharging into natural watercourses shall be equipped with properly designed energy dissipators which maintain a discharge velocity not larger than the velocity in the natural watercourse at mean flow condition.