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Draft of Landscape Ordinance Amendment/900.30sw April 13, 1999 c) All landscaped islands shall have a minimum of 137.52 square feet of planting area with non-compacted soil in order to adequately support and protect landscaping. d) Landscape islands shall be planted with at least one deciduous shade trees or evergreen tree which may be in addition to the required minimum trees to provide shade and provide screening. e) Landscape islands should contain mulch and shrubs or groundcover other than sod to minimize soil temperatures and to retain soil moisture. All landscaped islands shall contain underground irrigation or native draught tolerant species as approved by the City(See Irrigation, Section 900.30, 4b)). 6. Tree Preservation Plan a) In order to retain, as far as practi able, substantial tree stands as part of urban development a tree preservation plan should be submitted to the City prior to removing trees or commencing construction. No land alteration, within a woodland shall occur until the City finds that the land alteration complies with the following: • i) The land alteration shall be conducted so that the maximum amount of woodland is preserved. Tree preservation efforts can be maximized through the clustering of structures,following tree preservation practices and by the use of other innovative design techniques where appropriate. Preserving clumps of trees is favored over individual trees. ii) Data shall be provided describing as assessment of the trees present prior to land alteration, the anticipated changes after the alteration, and the actions required to satisfy the tree preservation policy. Although the developer must retain the maximum amount of woodland possible, the City recognizes that a certain amount of significant trees and tree cover removal is an inevitable consequence of urban development. iii) Removal Thresholds. In the following zoning districts listed in Column I, a percentage of woodland may be removed without any obligation for reforestation, but only up to and including the threshold percentage of woodland listed in Column II If the land alteration results in woodland removal that exceeds the percentage listed in Column II, then the applicant shall be responsible for reforestation in accordance with the standards of this section. • 9.12