Andover Unified Development Manual

Part 3 — Site Plan Review

City of Andover Unified Development Manual

8. Minimum Clearances . Design required landscape areas so that plants at mature size maintain the following minimum clearances. a. Shade trees (over 25 foot height at maturity) (1) 8 feet , measured from the center of trunk, from curbs, driveways, sidewalks, streetlights, and power poles. (a) Exception: Trees may be located within 8 feet of a sidewalk, if root barrier materials specifically approved by the SPRC are installed between the tree and the sidewalk. (2) 6 feet , measured from the center of trunk, from buried utility lines. b. Ornamental trees (25 foot height or less at maturity): (1) 6 feet , measured from the center of trunk, from curbs, driveways, sidewalks, streetlights, and power poles. (a) Exception: Trees may be located within 6 feet of (2) 4 feet , measured from the center of trunk, from buried utility lines. c. Trees beneath overhead utility lines or in utility easements: (1) Do not plant shade trees beneath overhead utility lines, or in drainage or utility easements. (2) If the mature height of ornamental trees is less than the height of the overhead line, they may be planted beneath overhead utility lines. a sidewalk, if root barrier materials specifically approved by the SPRC are installed between the tree and the sidewalk.

d. Select, locate, and maintain ornamental and shade trees to have 7 feet minimum vertical clearance between pedestrian sidewalks and the underside of the tree canopy. e. Install and maintain groundcovers, perennials and shrubs so they do not overhang curbs, sidewalks parking areas, driveways, driveway approaches, utility meters, manholes, storm sewer structures, power poles, utility pedestals, and streetlights. D. Irrigation . 1. Provide all landscape areas with a readily available permanent water supply, with the following exceptions: a. Irrigation is not required for established trees and natural areas that remain undisturbed by development activities. b. Landscape areas with drought-tolerant plants may use a temporary irrigation system, and are required to provide irrigation only for the first 2 growing seasons. 2. Equip automatic irrigation systems with rain sensor(s) to automatically forestall scheduled watering cycles when additional moisture is not needed. 3. Design and operate automatic irrigation systems to avoid overspray or pooling of water on impervious surfaces.

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