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R-7.280-D Street Tree Standards. <br /> 1. Com lin ante. The standards contained in this section shall be utilized in the <br /> development of a Street Tree Plan in order to ensure that new trees planted on public land and <br /> along street rights-of--way aze of the highest quality, require low maintenance, and do not interfere <br /> with public safety. <br /> 2. Tree Selection Standards. The species of trees to be planted must be selected <br /> from the Approved Street Tree Species List attached as Appendix A hereto and incorporated <br /> herein by reference, or be otherwise specifically approved by the Urban Forester. <br /> 3. Street Tree Quality Standards at Time of Planting. <br /> 3.1 The tree shall have a straight trunk perpendicular to the ground with a <br /> minimum branching height at 4' above the ground for trees 1.5" in caliper to a minimum <br /> of 6' above the ground for trees 2" in caliper. <br /> 3.2 Trees shall be grown to the standards and specifications of the American <br /> Association of Nurserymen, American Standard for Nursery Stock, currently in use. <br /> 3.3 Trees shall be provided free from insects and disease, decay, major <br /> structural defects, and damage to the trunk, branches and root system. <br /> 3.4 Trees structural scaffold branches shall be at least 6" apart where they <br /> attach to the main trunk. <br /> 4. Street Tree Size Standards at Time of Planting. <br /> 4.1 Trees for residential classed streets shall be a minimum of 1.5" in caliper, <br /> measured 6" above mean ground level, 8'-10' in height. <br /> <br /> . 4.2 Trees for collector or arterial streets shall be a minunum of 2" in caliper, <br /> measured 6" above mean ground level, 10'-12' in height. <br /> 4.3 Notwithstanding 4:1 and 4.2, trees for all streets abutting commercially <br /> zoned properties shall be a minimum of 2" in caliper, measured 6" above mean ground <br /> level, 10'-12' in height. , <br /> 5. Tree Condition at Time of Planting. Trees may be provided in the following <br /> conditions at the time of planting: <br /> 5.1 Balled and burlapped and in wire baskets, providing: <br /> Administrative Order - 4 11/11/96 <br /> <br />