Loading...
All fills shall be compacted to a minimum of ninety percent of maximum density as determined in the laboratory by the American Society for Testing Materials D-1557-91 test or modification thereof approved by the County Official, provided that the compactive energy of the test shall not be less than 35,000 foot-pounds per cubic foot. Field density shall be determined by the American Society for Testing Materials D-1556-90 or D2922-91 method, or an equivalent test approved by the County Official. Lower degrees of compaction may be permitted by the County Official after he or she receives a soil engineer's report certifying that the soil engineer has investigated the property, made soil tests, and that in the engineer's opinion such lower degree of compaction will be adequate for the intended use of the property which use shall be described in the report.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
The natural ground surface shall be prepared to receive fill by removing vegetation, non-complying fill, unsuitable soil, and, where slopes are five horizontal to one vertical or steeper, by benching into material approved by the soil engineer.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
(a) No fill shall be made which creates an exposed surface steeper in average slope than two horizontal to one vertical exclusive of benches and exclusive of roundings described in subsection (b) unless a report satisfactory to the County Official is received from a landscape architect certifying that such steeper slope, considering the nature of the soils on the slope surface, will support the proposed planting to maturity without significant or excessive erosion and a report by a soil engineer is received certifying that he or she has investigated the property and that in the engineer's opinion such steeper slope will be stable and will not endanger any public or private property or result in the deposition of debris in any public way or interfere with any existing drainage course.
(b) All fill slopes which are major slopes shall be rounded into the existing terrain to produce a contoured transition from fill face to natural ground and abutting cut or fill surfaces where conditions permit.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
(a) No organic material shall be permitted in fills.
(b) No rock or similar irreducible material with a maximum dimension greater than eight inches shall be buried or placed in any fill unless permitted by the County Official after receipt of a report by a soil engineer certifying that he or she has investigated the property and the fill material and that a fill including such greater size material may be constructed to meet the requirements of this Division. When such greater size material is placed in fills it shall be done under the direction and supervision of a soil engineer.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
Unless specifically prohibited by the terms of the Grading Permit, materials excavated from any site for use thereon may be screened upon that site, and all materials which are to be placed as fill upon any site may be mixed upon that site.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
Fills toeing out on natural slopes which are steeper than two horizontal to one vertical shall not be made unless approved by the County Official after receipt of a report by a soil engineer certifying that he has investigated the property, made soil tests and that in his or her opinion such steeper slope will safely support the fill proposed to be made.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
In areas intended or designed to support buildings, expansive soil shall not be placed within three feet of the finish grade in such building areas unless approved by the County Official after receipt of a report by a soil engineer certifying that he or she has investigated the property and recommended a design of footings or floor slab or other procedure that will alleviate any problem created by placing the expansive soil within such building areas.
(Added by Ord. No. 9547 (N.S.), effective 5-9-03)
Loading...