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Sec. 117-112. - R-2 Residential District. <br /> (e) General R-2 residential performance standards. <br /> (6) Lot landscaping. <br /> a. Minimum landscaping requirements. All open space areas of a lot which are not used or <br /> improved for required parking areas, drives or storage shall be landscaped with a <br /> combination of overstory trees, ornamental trees, shrubs, flowers, ground cover, decorative <br /> walks, or other similar site design materials in a quantity and placement suitable for the lot. <br /> A reasonable attempt should be made to preserve as many existing trees as practicable in <br /> order to incorporate the trees into the development. <br /> b. Minimum planting requirements. The minimum number of plantings required shall be <br /> determined based on crown or canopy cover. To fulfill the planting requirements, a <br /> combination of trees and shrubs shall meet or exceed the minimum required canopy cover <br /> square footage. The minimum canopy cover shall be calculated as follows: <br /> 1. Determine ratio of impervious area to entire site area. <br /> 2. Multiply the impervious area/site area ratio by the square footage of the pervious area <br /> to calculate the required canopy cover square footage for the project area. <br /> 3. The following formula shall be utilized to determine the average canopy cover of a <br /> species: <br /> [(Minimum + Maximum Spread) = 4] 2 x n x (0.65 for preferred species or 0.50 for <br /> acceptable species, as identified in the Ramsey Tree Book). <br /> c. Minimum size of plantings. Required trees shall be of the following minimum planting size: <br /> Planting Type Size <br /> Deciduous trees 1-inch diameter as measured six inches above ground <br /> Coniferous trees I 5 feet in height <br /> -F <br /> Deciduous shrubs 2 feet in height <br /> Evergreen shrubs 2 feet in height or 2 feet in width, whichever applies <br /> —F <br /> Ornamental trees 1-inch diameter as measured six inches above ground <br /> d. Planting types. Acceptable and preferred plantings shall be identified in the Ramsey Tree <br /> Book. The compliment of trees fulfilling the landscaping requirements shall not be less than <br /> 25 percent deciduous and not less than 25 percent coniferous. No more than 25 percent of <br /> the canopy cover requirements shall be fulfilled with the use of shrubs and ornamental trees. <br /> e. Irrigation. If a landscape irrigation system is provided,the system shall be equipped with the <br /> following: <br /> Page 1 <br />