2014-07-22_PWETC_AgendaPacket - Laserfiche WebLink

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j. Provide incentives for creative land use and good site design which preserves existing trees and maintenance of existing vegetation; and k. Provide an objective method for the replacement of trees. 2. Applicability: The Community Development Department may require additional landscaping or alter the placement of the landscaping as deemed appropriate. 3. Minimum Landscape Requirements: a. All open areas of a lot that are not used for buildings, parking or circulation areas, patios, or storage shall be landscaped with a combination of canopy trees, ornamental trees, evergreen trees, shrubs, flowers, sod, ground cover materials, and other site design features to ensure soil stabilization. This shall not apply to undisturbed areas retained in a natural state. b. All landscaping and site improvements shall be completed within 1 year after the certificate of occupancy has been issued. c. An underground sprinkler system shall be installed in all landscaped areas except areas to be preserved in a natural state or where all proposed plant materials are drought -tolerant. Where drought -tolerant plant materials are used, irrigation shall be required only for the 2 -year period following the installation and may be accomplished using hoses, water trucks, or other nonpermanent means. d. Landscape plans shall be developed with an emphasis upon the boundary or perimeter of the subject site, to the immediate perimeter of the structure, parking areas, and along areas to be screened. e. The following minimum number of plant materials shall be provided: i. One and two-family dwellings constructed after January 1, 2011 shall plant 1 tree per lot in the boulevard. The boulevard tree shall be of a species identified in the City of Roseville Street Tree Master Plan for streets and boulevards and shall be planted according to City requirements. ii. Multi -family residential dwellings shall require 1 canopy or evergreen tree per dwelling unit. iii. Non -Residential uses shall require the greater of: 1 canopy or evergreen tree per 1,000 square feet of gross building floor area; or 1 canopy or evergreen tree per 50 lineal feet of site perimeter; iv. Up to 25% of the required number of canopy or evergreen trees may be substituted with ornamental trees at a ratio of 2 ornamental trees to 1 canopy or evergreen tree. v. Except for one- and two-family dwellings, shrubs shall be required at the greater of the following: 6 shrubs per 1,000 square feet of gross building floor area; or 6 shrubs per 50 lineal feet of site perimeter. vi. In a mixed-use building or development, each use shall be calculated separately to determine minimum landscape requirements. f The City encourages the use of native plant materials that provide interest and color in the winter. 4. Plant Material Standards: a. The complement of trees required shall be at least 25% deciduous and at least 25% coniferous. Not more than 30% of the required number of trees shall be composed of a single species. b. Minimum Size of Plantings: Caliper inches to be measured 6 inches off the ground. i. Canopy tree: 3 -inch caliper ii. Ornamental tree: 1.5 -inch caliper iii. Evergreen tree: 6 -foot height iv. Deciduous or evergreen shrub: 5 -gallon pot 5. Method of Installation: a. The spacing of trees shall be appropriate to the type of plant species provided. Evergreen shrubs shall be planted in clusters in order to maximize survival. b. Visibility triangles shall be maintained as required in Section 1011.06 by selecting and locating landscaping and design features that do not exceed the height limitation in visibility triangles.