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this Section, which aze desi ed to ensure trees aze not trimmed or. runed in a manner that causes <br /> l~ P <br /> <br /> - damage to the tree or diminishes its health. <br /> 3. Tree Pruning Standards. <br /> 3.1 All trees shall be pruned according to the guidelines published by the <br /> International Society of Arboriculture current edition or the pruning standards and <br /> specifications of the National Arborist Association current edition unless modified herein. <br /> 3.2 All tree work shall be performed following Oregon Safety and Health <br /> Administration regulations and following the American National Standards Institute, <br /> A.N.S.I. 2133.1, 300, or current version. <br /> 3.3 Pruning shall be deemed necessary when such action is to: <br /> 3.3.1 Correct structural problems; remove deadwood and decayed parts, <br /> 3.3.2 Enhance the tree's natural beauty and develop its natural shape, <br /> 3.3.3 .Comply with the Eugene Code, 1971, <br /> 3.3.4 Correct a safety or health problem, <br /> 3.3.5 Clear the vision of regulatory signs, or ~ . <br /> 3..3.6 Maintain clearance around electrical lines. <br /> 3.4 All tree work performed near electrical lines shall conform to American <br /> National Standazds Institute C2, National Electrical Safety Code, and the Oregon Public <br /> Utilities Commission Tree Clearance Policy, current edition. <br /> 3 , 5 Trees pruned for electrical line clearance shall follow the pruning guidelines <br /> contained within the publication of Dr. Shigo entitled °Pruning Trees Near Electrical <br /> Lines' current edition and be performed in accordance with the .written agreement between <br /> the Eugene Water & Electric Board (EWEB) and the City. <br /> _ 3.6 Unless otherwise required herein, .young trees shall be pruned leaving at <br /> least two-thirds (2/3) of the height of the tree in foliage and canopy. <br /> 3.7 Mature trees shall be pruned, in a manner that retains well-spaced, inner <br /> lateral branches so as to allow the trunk taper to be developed as needed. for the strength <br /> of the branch attachment. <br /> 3.8 No tree shall have more than 20 % of its canopy removed in any one pruning <br /> or any one year unless approved in writing by the Urban .Forester. <br /> 3.9 Street trees shall be pruned to allow clearance 9' above the sidewalk and 16' <br /> 99° ~U4U ~ <br /> Street 1Yee Plan Agreement.- City Plants Alternate - 23 of 25 _ <br /> <br />