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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 u 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 5 feet in height <br />Deciduous shrubs 2 feet in height <br />Evergreen shrubs 2 feet in height or 2 feet in width, whichever applies <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 />