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3 . Where street blocks have been assigned a particular <br /> species or variety on the Master Street Tree Plan, only these <br /> shall be planted subject to revision by the Municipal <br /> Forester and approval by the Shade Tree Commission. <br /> C. Planting. <br /> 1. SIZE <br /> a. Unless otherwise specified by the Municipal Forester, all <br /> medium to large deciduous tree species and their cultivars <br /> and varieties, shall conform to American Association of <br /> Nurserymen Standards and be at lease 1 1/4 to 1 1/2 inches in <br /> diameter six (6) inches above ground level, and at least <br /> eight (8) to ten (10) feet in height when planted. The crown <br /> shall be in good balance with the trunk. <br /> b. All small deciduous tree species and their cultivars or <br /> varieties, shall be at least five (5) to six (6) feet or more <br /> in height and have six (6) or more branches. <br /> 2 . Grade <br /> a. Unless otherwise allowed for specific reasons, all trees <br /> shall have comparatively straight trunks, well developed <br /> leaders and tops, and roots characteristic of the species, <br /> cultivar, or variety showing evidence of proper nursery <br /> pruning. All trees must be free of insects, diseases, <br /> mechanical injuries, and other objectionable features at the <br /> time of planting. <br /> 3 . Location and Spacing <br /> a. Based on a 40 year cycle, no tree which will attain a <br /> trunk diameter greater than twelve (12) to fifteen (15) <br /> inches shall be planted in a treelawn less than three (3) to <br /> five (5) feet in width. In treelawns less than three (3) <br /> feet in width, or where overhead lines or building setback <br /> presents a special problem, the selection of site and species <br /> shall be determined by the Municipal Forester easement rights <br /> to plant beyond the sidewalk on private property. Such <br /> easements should contain provisions granting the municipality <br /> permission to select, plant, maintain, and remove such trees <br /> under the direction of the Municipal Forester. <br /> b. Where there is a treelawn less than three (3) feet in <br /> width, legal steps should be taken to obtain easement rights <br /> to plant beyond the sidewalk on private property. Such <br /> easements should be taken to obtain provisions granting the <br /> municipality permission to select, plant, maintain, and <br /> remove such trees under the direction of the Municipal <br /> Forester. <br /> C. Trees shall be planted at least thirty (30) feet from <br /> street intersections and at least fifteen (15) feet from <br /> driveways and alleys. <br /> d. No tree shall be planted closer than ten (10) feet of a <br /> utility pole. <br /> e. Spacing of trees should be determined by the Municipal <br /> Forester according to local conditions, the species, <br /> cultivars, or varieties used, their mature height, spread, <br />