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SECTION 4. Title 105 Zoning; Chapter 105.12: Zoning Code, Section 480 Landscape Requirements is hereby amended by changing the following section (Proposed language is underlined, deleted language is shown with strikethrough): b. Design considerations. The following design concepts and requirements shall be considered when developing a landscape plan: 1. To the maximum extent possible, the landscape plan shall incorporate, preserve and protect, existing significant trees and other healthy, non-invasive vegetation on the site. 2. Landscaped areas should be of adequate size to allow for healthy plant growth, to a typical mature size without impeding on roads, walks, trails, buildings or other areas needed for service access or public safety. Planting areas should provide adequate areas for plant maintenance. 3. A variety of trees and shrubs should be used to provide visual interest year-round. No more than 50 25 percent of the required number of trees and shrubs may consist of any one species taxonomic genius. A minimum of 25 percent of the required number of trees shall be deciduous shade trees, and a minimum of 25 percent shall be coniferous trees. Ornamental trees may be used when applied towards landscaping requirements. However, the number of trees shall not exceed 15 percent of the required amount. 4. Final slopes greater than 3:1 will not be permitted without special treatment such as terracing, retaining walls, erosion control blankets, or special ground covers. 5. All plant materials, except trees planted per the tree replacement schedule, shall meet the following minimum size standards in Table 6-1. Trees planted per the tree replacement schedule shall meet the minimum requirements outlined in LEC 105.12.470(c)(8)d. Table 6-1: Minimum Size Standards for Landscape Materials Plant Type Minimum Size at Planting ** Trees: Evergreen 6 feet in height Deciduous--shade 2.5 inches caliper, measured six inches from base Deciduous--ornamental 2 inches caliper, measured six inches from base Shrubs: Evergreen # five container* Deciduous # five container* Shrubs used for screening (evergreen or deciduous) # five container* * Approximately five gallons. ** See American Standards for Nursery Stock, ANSI 260.1-2004 for exact specifications. * This table and its requirements do not apply to the tree replacement schedule. 6. As an alternative to the minimum standards for landscape materials, a landscape plan prepared by a qualified professional certifying that said plan will meet the intent of this section may be submitted. 7. As a general rule, trees should be planted ten feet away from all utilities including water and sewer stubs unless approved by the city's landscape architect. No plantings may be placed in a drainage and utility easement, unless approved by the Public Works Director,