(a) The provisions of this Section shall be in addition to the grading standards set forth in Section 15.03.035, Provo City Code.

(b) Any land or parcel having a slope of greater than ten percent (10%) shall be deemed to be land having a “steep slope” within the meaning of this Chapter. No person shall be permitted to grade, cut, excavate, fill, or to erect any structure on undisturbed hillside areas that exceed a slope greater than thirty percent (30%). Any person proposing to grade, cut, excavate, fill or to erect any structure on any slope or hillside with a slope between ten percent (10%) and thirty percent (30%) shall be required to submit a geologic report which meets the standards and requirements of this Chapter. A geologic report may not be required if a geologic report relating to the subject property has, at an earlier date, been accepted and approved by the City Engineer. An applicant may appeal the decision of the City Engineer through a request for administrative review.

(c) Borrowing for fill shall be prohibited unless the material is obtained from a cut permitted under an approved grading plan obtained for some purpose other than to produce fill material, or imported from an area outside the hillside area of Provo City.

(d) Cut and fill slopes shall be constructed to eliminate sharp angles of intersection with the existing terrain and shall be rounded and contoured as necessary to blend with existing topography to the maximum extent possible. The City will not accept the dedication and maintenance of cut and fill slopes except those within the required street right-of-way. Where a cut or fill slope occurs between two (2) lots, the slope shall normally be made a part of the downhill lot. Cut and fill slopes shall not be allowed to disrupt existing drainage channels.

(e) Sections of the International Building Code regulating excavation and grading shall be complied with.

(f) Exceptions for grading hillside slopes which exceed thirty percent (30%) may be granted for the following:

(a) Required storm water runoff collection facilities shall be designed so as to retain storm water runoff on development sites for a sufficient length of time so as to prevent flooding and erosion during storm water runoff flow periods.

(b) Required storm water runoff collection facilities shall be so designed as to divert surface water away from cut faces or sloping surfaces of a fill. French drains are not acceptable.

(c) Curb, gutter, and pavement designs shall be such that water on roadways is prevented from flowing off the roadways.

(d) Natural drainage shall be rip rapped or otherwise stabilized to the satisfaction of the City Engineer below drainage and culvert discharge points for a distance sufficient to convey the discharge without channel erosion.

(e) Waste material from construction, including soil and other solid materials, shall not be deposited within a natural or man made drainage course nor within irrigation channels.

(f) Sediment catchment ponds shall be constructed downstream from each development, unless sediment retention facilities are otherwise provided.

(a) Every effort shall be made to conserve topsoil which is removed during construction for later use on areas requiring vegetation or landscaping, e.g., cut and fill slopes.

(b) Areas not contained within lot boundaries shall be protected with adapted, fire-resistant species of perennial vegetation cover after all construction is completed. A list of acceptable species is available from the Development Services Department.

(c) New planting shall be protected with organic cover.

(d) All disturbed soil surfaces shall be stabilized before final acceptance of the development by the City.

(e) The developer shall be fully responsible for any destruction of native vegetation which is required to be retained in all areas under the ownership and control of the developer. The developer shall carry the responsibility for such areas both for the developer’s own employees and for all subcontractors from the first day of construction until final acceptance of the development by the City. The developer shall be responsible for replacing such destroyed vegetation.

(f) Prior to the termination of the bonding period, any dead plant materials required to be installed by the developer shall be replaced and a new bond issued to assure establishment of the replaced materials.

(a) Lot size and potential placement of buildings thereon shall be such that adequate clearance of hazardous, flammable vegetative cover may be accomplished.

(b) All easements for firebreaks for safety of built-up areas shall encompass access for firefighting personnel and equipment and such easements shall be dedicated for this specific purpose by being recorded.

(c) The inability to provide fire line water pressure consistent with the standards set by the Insurance Service Organization shall be justification for denial of a development request.

(a) All streets within a hillside area shall be designed to meet the standards required for streets in all other areas of the City except that sidewalks of not less than six (6) feet in width may be required on one (1) side of streets within a hillside area.