14-4-117 REQUIREMENTS FOR BUILDING IN THE R-F SUBZONE

No construction, excavation, or removal of vegetation may occur on any lot or parcel in the R-F subzone until a permit has been issued, and no permit may be issued until the proposed plans have been approved by the appropriate land use authority. The following rules apply to all building and construction in the Residential Foothill Zone. A. Drainage and Erosion 1. Lots shall be arranged so as to ensure required setbacks from drainage channels as defined by the Army Corps of Engineers on official Flood Insurance Rate Maps. 2. Facilities for the collection of storm water runoff shall be required to be constructed on development sites and according to the following requirements: a. Such facilities shall be the first improvement constructed on the hillside. b. Such facilities shall be designed to retain safely and adequately the maximum expected storm water runoff for a twenty-five-year storm, as determined by Technical Paper No. 28, prepared by the U. S. Department of Commerce - Weather Bureau, for a sufficient length of time so as to prevent flooding and erosion during storm water runoff flow periods. c. Such facilities shall be so designed to divert surface water away from cut surfaces or sloping surfaces of a fill. 3. Construction on a development site that may disturb vegetative cover shall be minimized between December 1 of any year and April 15 of the following year. B. Vegetation and Re-vegetation 1. Any area on a development site cleared of natural vegetation in the course of construction of offsite improvements shall be replanted with vegetation which, when established, shall have characteristics of erosion control equal to or exceeding the original vegetation. 2. New plantings shall be protected with organic cover. 3. The use of persons or firms having expertise in the practice of revegetation (i.e., licensed landscape architects or nurserymen) shall be employed to supervise the planning and installation of re-vegetation cover. 4. Vegetation shall be removed only when absolutely necessary, e.g., for the construction of buildings, roads and filled areas. 5. Vegetation shall be planted in all disturbed areas within three (3) weeks of the completion of off-site improvements or as directed by the City Engineer. Such vegetation shall be of a perennial and low combustibility nature and which, when established, shall be sufficient to stabilize the soil. C. Spark arresters shall be installed in every fireplace constructed indoors or outdoors. Screen openings in such arresters shall not be in excess of onequarter (1/4) inch in diameter. D. Grading, Cuts and Fills 1. Exposed unstable surfaces of an excavation or fill shall not be steeper than one (1) vertical to two (2) horizontal. 2. Permanent fill shall be located so that settlement, sliding, or erosion shall not damage or cover any street, curb, gutter, sidewalk or building. 3. All fill and degrees of compaction shall comply with the standards established by the Bountiful City Engineer in accordance with applicable codes and standards adopted by the City. 4. The top or bottom edges of slopes caused by an excavation or fill up to ten (10) vertical feet shall be at least three (3) horizontal feet from the property line and/or street right-of-way lines. Cut and/or fills greater than ten (10) feet shall be setback an appropriate distance as determined by the City Engineer. 5. The maximum vertical height of any cut or fill shall be ten (10) feet, except for existing, naturally occurring, and/or man-made site anomalies. An anomaly shall mean any abnormal deviation from the natural contours of a property encompassing less than ten (10) percent of the entire parcel area or one thousand (1,000) square feet, whichever is less. 6. Any structure except a retaining wall or soil stabilization improvement shall have a setback from the crest of the cut or base of the fill of a minimum distance equal to the depth of the fill or the height of the cut, unless a structurally sound retaining wall is built for the cut or fill slope. Retaining walls may be a part of a dwelling unit. 7. The distance from any structure to the toe of a slope shall be at least the height of the slope divided by two (H/2), up to fifteen (15) feet. 8. No cut, fill, or other area of disturbance may have a finished grade exceeding two (2) horizontal feet for every one (1) vertical (a 2:1 slope). Retaining walls shall be required in any area of disturbance where the grade exceeds a 2:1 slope. Any retaining wall that is (4) feet in height or taller shall be designed by a licensed engineer and approved by the Bountiful City Engineer in accordance with applicable codes adopted by the City. 9. No retaining wall shall exceed ten (10) feet in height. E. Streets, roadways, and private access ways shall follow as nearly as possible the natural terrain. The following additional standards shall apply: 1. At least two (2) ingress and egress routes shall be provided for each subdivision. 2. Points of access shall be provided to all developed and undeveloped areas for emergency and firefighting equipment. Any driveway located upon a lot extending from a public street shall have at any point a maximum grade of fifteen (15) percent as measured along the centerline of the driveway, and a minimum width of twenty feet, and shall be of a sufficient width and design to admit and accommodate firefighting equipment. Any driveway to an accessory building or secondary garage may be reduced to a minimum width of ten (10) feet if the Planning Director or Building Official determines that it is not necessary for providing emergency access. 3. No cul-de-sac shall exceed six hundred (600) feet in length, and each culde-sac shall have a turnaround with a radius of fifty-four (54) feet. A stub street that is longer than the width or length of any adjacent single lot or that is longer than two hundred (200) feet, whichever is less, shall have a temporary turnaround at the end thereof. 4. Centerline curvatures shall not be less than one hundred (100) feet radius on any curved street pattern. Depending on the slope of the street and other site specific conditions, the City Engineer may require a larger curvature in accordance with AASHTO and other applicable standards adopted by the City. 5. Variations of street design standards developed to solve special hillside visual and functional problems may be presented to the Planning Commission for consideration. Examples of such variations may be the use of split roadways to avoid deep cuts, modifications of surface drainage treatments or sidewalk design. 6. Any road or right-of-way for vehicular access dedicated for public use shall be subject to the following limitations: a. The maximum grade of such road or right-of-ways shall be twelve (12) percent except as hereafter provided. b. The City Council, after receiving a recommendation from the Planning Commission, may grant approval for the construction of a straight section of road or right-of-way having a grade exceeding twelve (12) percent, but the grade of such streets shall not, in any event, exceed fifteen (15) percent. F. Architectural Design and Site Orientation 1. Any building proposed for construction in the Residential Foothill subzone shall use building materials and colors that blend harmoniously with the natural settings of the site. Materials such as natural woods, brick (earth colors), and stone are considered to be most appropriate. 2. The Planning Commission shall review the design and specified exterior materials and colors for all structures other than single-family dwellings. Building permits for such structures shall not be granted until building materials and colors have been approved by the Planning Commission. 3. Landscaping shall be designed and installed to maintain the natural character of foliage in the area consistent with the proposed development. 4. Any primary structure and its accompanying site improvements and accessory structures shall be located on the building pad defined and approved for the lot, but may be located outside of the minimum building pad area only if the ground is considered usable as set forth in this Title. G. In addition to the provisions requiring posting of an acceptable bond as set forth in the Codes of Bountiful, Utah, as amended, a corporate surety bond or cash bond or a letter of credit supported by a guarantee of a state or federally chartered bank or other financial institution shall be required by the City Council to guarantee the completion of public improvements such as streets, sidewalks, curb, gutter, utilities, re-vegetation projects, the stabilization of gradings, cuts, and fills and constructions of storm water runoff facilities as required in this Title. The bond shall be in an amount equal to the cost of construction of such projects and shall continue in effect for one (1) year after the completion date of such projects, improvements, or facilities. H. Exceptions to the requirements and provisions set forth in this Title may be approved by the City Council, provided that the developer or owner of such development can demonstrate that the requested exception: 1. Is not detrimental or injurious to the property or improvements adjacent thereto, 2. Is not detrimental to the general well-being of the neighborhood, 3. Is minor in its overall scope and not a major departure from the purposes and objectives of this Chapter, 4. Does not require undue public expense for maintenance, and 5. Does not impose an undue burden upon the public or the City. I. Lot Access and Site Layout Each proposal to construct a primary structure more than one hundred fifty (150) feet from a public street shall be reviewed and approved by the Administrative Committee and Fire Marshall prior to receiving a building permit. Furthermore, any proposal to construct a primary structure more than one hundred fifty (150) feet from a public street shall also include a residential fire suppression system (sprinklers), and all other criteria as set forth below. No primary residential structure may be located more than five hundred (500) feet from a public street, without exception. All measurements shall be taken from the edge of the public R.O.W. along the centerline of the driveway or private access road to the nearest point of the primary structure. All of the following must be met before the Administrative Committee may grant approval: 1. An access road or driveway shall be provided which meets the standards outlined in Section 14-4-115. In addition, all dwelling structures shall have installed at the time of construction, and keep continuously maintained, a pressurized interior fire protection sprinkling system that complies with the minimum standards of the IRC and/or IBC, and meeting the Fire Marshall’s approval.