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<br /> <br /> <br />International Society of Arboriculture and/or is a member of the American Society of Consulting <br />Arborists. <br />F. “City” means the City of Pleasanton acting by and through its authorized representatives. <br />G. “Director” means the Director of the City department that oversees tree removals or the <br />Director’s designee. <br />H. “Dripline” means the outermost circumference of the tree or trees’ canopy, from which <br />water drips onto the ground. The 'dripline' is taken to include the area that lies within that <br />circumference. <br />I. “Effectively Remove” means actions that foreseeably lead to the death of a Protected <br />Tree or permanent damage to its health. Effective removal actions include, but are not limited to: <br />a. Any extreme root or branch pruning that is not consistent with standard arboriculture <br />practices for a healthy tree; <br />b. Removal of the bark around the circumference of the tree (girdling); <br />c. Compaction of soil within the dripline; <br />d. Introduction of harmful chemicals; <br />e. Introduction of harmful foreign objects into tree or root system; <br />f. Introduction of pests or disease; <br />g. Unauthorized relocation or transportation of a tree; and <br />h. Trenching, excavating, altering the grade, or paving within the dripline. <br />J. “Emergency” means a sudden, serious, unexpected, and often dangerous situation <br />requiring immediate action to prevent or mitigate loss or damage to life, property, or essential <br />public services. An emergency tree situation typically includes, but is not limited to: a tree <br />failure that is active and in progress, such as a broken but still attached branch; a partially <br />uprooted tree; or a split fork or bifurcated main stem, that meets the “extreme” or “high” risk <br />characteristics as defined by the International Society of Arboriculture. <br />K. “Heritage Tree” means a tree that is considered irreplaceable. It may be any tree found <br />on public or private property that has special significance to the community due to its history, <br />size (circumference and/or height), species, or unique quality. The Landscape Architecture <br />Section shall be responsible for overseeing the Heritage Tree Program. A request for designation <br />as a Heritage Tree must come from the owner of the property where the tree is growing, or if <br />nominating someone else’s tree, must have the property owner’s written permission to nominate <br />the tree. Trees which are on properties that come under development review, may be designated <br />as Heritage Trees during the review process by either the property owner or the Director. Any <br />pruning of Heritage Trees shall be done in consultation with the City’s arborist to ensure that the <br />work performed on or around the tree will not endanger its health, structure, or life of the tree. <br /> <br />Page 110 of 126