05/12/2010 P&Z Packet - Laserfiche WebLink

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• • • Attachment 2: Landscaping and Tree Preservation Standards Page 7 d. To achieve 100% opacity with shrubs, a double row of plants with triangulated spacing shall be used. See illustration. Shrubs shall be spaced so that visibility through the screen is completely blocked within 5 years of the time of planting. Small shrubs shall be a planted at a maximum of interval of 3' on center, medium shrubs shall be planted at a maximum interval of 4' on center, and large shrubs shall be planted at a maximum interval of 6' on center unless otherwise authorized by the City. e. In addition the shrub and wall screen requirements, all screens shall be planted with large trees every 50 LF, medium trees ever 35 LF, or small trees every 25 LF or some combination thereof, along the length of the screen. f. Existing vegetative screens should be left in place unless composed of invasive species or otherwise directed by the City. Existing screens may be enhanced with new plantings to comply with the requirements. f. Berms shall be irrigated with maximum side slopes of 3:1. g. Permanent walls shall be offset by a minimum of 2' at intervals of 75' maximum length for stability and visual relief. See illustration. h. Approved permanent wall materials include wood, metal, masonry, concrete and stone. 8. Boulevard Tree Requirements: a. Boulevard trees are required at the rate of one tree per 70 linear feet of road frontage where property fronts any public road. The City shall collect a standard fee per tree based on the estimated market rate cost to purchase and install trees within the development site. b. Existing trees may be used to fulfill boulevard tree requirements at the City's discretion. 9. General Landscaping Requirements: a. Desirable existing trees may be used to fulfill Canopy Cover, Foundation Landscape and Open Areas Landscape requirements if applicable by placement. Desirable existing trees are valued according to the following table: Existing Tree Value Deciduous trees under 6" DBH or Evergreen trees under 12' tall Deciduous trees between 6 " -12" DBH or Evergreen trees between 12' -20' tall Deciduous trees' over 12" DBH or Evergreen trees over 20' tall. Tree Value 1 large tree 2 large trees 3 large trees b. Requirements may be met by grouping different sizes of trees and shrubs. c. New trees may fulfill Canopy Coverage, Foundation Landscape and Landscape Screen requirements simultaneously if applicable by placement.