(a) At least twenty-five percent (25%) of the proposed cluster development is preserved as passive or active natural open space.

(b) The applicant shall submit a report that has been stamped by an engineer and landscape architect licensed in Utah that attests the clustering proposal will have no adverse impact on adjacent properties, or, if such impacts are anticipated, such report will detail these impacts and recommend mitigation measures, such as landscape, screening, illumination standards, and other design features. If impacts are anticipated, as set forth in the above-mentioned report, the applicant shall enter into an agreement with the City to implement and maintain appropriate mitigation measures, approved by the City Engineer, to buffer and protect adjacent properties from the proposed clustered development. The developer’s Utah licensed engineer and landscape architect shall verify that the recommended mitigation measures have been incorporated into the development. The responsibility – throughout the development process – for verifying mitigation measures shall be the responsibility of the developer’s Utah licensed engineer and landscape architect;

(c) The Planning Commission, based upon the findings of a report submitted by the applicant and stamped by an engineer and landscape architect licensed in the State of Utah, finds that the clustering proposal, compared with a conventional development, better attains the policies and objectives of the CH Zone, such as providing more natural open space, preserving existing trees and vegetation coverage, and preserving sensitive environmental areas such as stream corridors, geological sensitive areas, prominent ridgelines, wetlands, and steep slopes; and

(d) The Design Review Committee issues an opinion that the architecture, height, building materials, building colors, and other design features of the development blend with the surrounding natural landscape and are compatible with adjacent properties or development.

(a) In the A1 Zones, RA Zone, R1 Zones (except the R1.6 and R1.7 Zones), and R2 Zone, a density bonus of twenty-five percent (25%) over the base density is permitted for those cluster developments that satisfy the standards in Subsection (1) of this Section. To facilitate clustering, the area, width, and depth of lots may be reduced by up to twenty-five percent (25%) from such requirements in the base zone; however, in no case shall the depth of a lot be less than seventy-five (75) feet.

(b) The allowable density bonus for a cluster development shall be calculated based on net developable acreage. Such resulting number shall be rounded to the nearest whole number, but in no case less than one (1).

(a) The undeveloped area of the development site shall be preserved as active or passive natural open space. Natural open space areas shall provide contiguity with adjacent natural open space and/or conservation areas; protect unique natural, historical, or cultural site features and resources; avoid fragmentation of open space areas within the site; and preserve existing, legal public access.

(b) No more than thirty (30) lots are allowed in a single cluster. Each cluster shall be separated from other residential clusters by a minimum of one hundred (100) feet.

(c) The layout of a cluster development shall protect significant natural resources within the proposed development. Natural resources include riparian areas, wetlands, ecological resources, and steep slopes and ridgelines. The overall site design shall employ the site’s natural topography to hide multiple residential clusters from the sight of adjacent clusters.

(d) Cluster development shall preserve the following: