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c. An underground sprinkler system shall be installed • <br /> in all landscaped areas except areas to be preserved in <br /> a natural state or where all proposed plant materials <br /> are drought-tolerant.Where drought-tolerant plant <br /> materials are used,irrigation shall be required only <br /> for the 2-year period following the installation and <br /> may be accomplished using hoses,water trucks,or <br /> other nonpermanent means. <br /> d. Landscape plans shall be developed with an <br /> emphasis upon the boundary or perimeter of the <br /> subject site,to the immediate perimeter of the <br /> structure,parking areas,and along areas to be <br /> screened. <br /> e. The following minimum number of plant materials <br /> shall be provided: <br /> i. One and two-family dwellings constructed <br /> after January 1,2011 shall plant 1 tree per <br /> lot in the boulevard.The boulevard tree <br /> shall be of a species identified in the City <br /> of Roseville Street Tree Master Plan for <br /> streets and boulevards and shall be planted <br /> according to City requirements. <br /> ii. Multi-family residential dwellings shall <br /> require 1 canopy or evergreen tree per • <br /> dwelling unit. <br /> iii. Non-Residential uses shall require the <br /> greater of: <br /> - 1 canopy or evergreen tree per 1,000 <br /> square feet of gross building floor area; <br /> or <br /> - 1 canopy or evergreen tree per 50 lineal <br /> feet of site perimeter; <br /> iv. Up to 25%of the required number of canopy <br /> or evergreen trees may be substituted with <br /> ornamental trees at a ratio of 2 ornamental <br /> trees to 1 canopy or evergreen tree. <br /> v. Except for one-and two-family dwellings, <br /> shrubs shall be required at the greater of the <br /> following: <br /> - 6 shrubs per 1,000 square feet of gross <br /> building floor area;or <br /> - 6 shrubs per 50 lineal feet of site <br /> perimeter. <br /> vi. In a mixed-use building or development, <br /> each use shall be calculated separately <br /> to determine minimum landscape <br /> requirements. • <br />