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Tree Removal - Most tree ordinances regulate the removal of trees. In Eugene, the <br /> three main criteria for granting a tree removal permit are: 1) the tree is diseased or <br /> damaged, 2) it represents a potential hazard, or 3) it restricts the ability of the <br /> property owner to develop or otherwise realize the economic potential of the <br /> property. <br /> A future ordinance may also provide additional protection for "special" trees, <br /> because of their greater value or cultural significance. Special trees are generally <br /> identified by two simple characteristics: a minimum diameter at breast height and <br /> the opinion of the City arborist, tree commission or historical society that they are <br /> worthy of protection. Special trees often receive extra attention in tree ordinances. <br /> The component of a comprehensive tree ordinance that governs the removal of <br /> special trees generally includes a statement of purpose related to cultural, heritage <br /> and resource protection, aesthetic improvement and enhancing attractiveness to <br /> visitors. Eugene currently has no ordinance that provides protection for this tree <br /> classification. In the future, Eugene may want to consider the legal protection of <br /> these trees. <br /> Pruning - Since improper pruning can permanently disfigure or kill a tree, it is <br /> regulated under a comprehensive tree ordinance. While Eugene has such an <br /> ordinance, it is hard to enforce with current staff levels. Those who prune trees <br /> should follow the pruning standards outlined by the National Arborist Association or <br /> the International Society of Arboriculture. This requirement can be expected to <br /> result in visually acceptable pruning practices. <br /> Construction - An ordinance should require adequate devices and measures to <br /> prevent damage to trees designated to remain after construction activity or removal <br /> of adjacent trees. The tree ordinance should: <br /> 1) regulate grade changes or soil compaction around trees, <br /> 2) require trees to be shielded with physical barriers, <br /> 3) prohibit storage of construction materials and debris within dripline <br /> of the crown, and <br /> 4) prohibit attachment of anything to trunks. <br /> A future ordinance, covering these four points, would minimize unintentional tree <br /> loss. <br /> If trees are damaged and subsequently die, replacements should be required. <br /> Compensation for trees that cannot be replaced should also be obtained since the <br /> public has lost a valuable asset. <br />