Willamette River Greenway Code Amendments <br />Attachment C <br />(1) Tree preservation area(s) must be delineated and shown on <br />a site plan submitted for approval by the City. <br />(2) Applicant must provide written certification from a certified <br />arborist or licensed landscape architect stating that the <br />area(s) designated for tree preservation include(s) at least 50 <br />percent of the total existing d.b.h. of significant trees on the <br />development site. <br />3) No trees within the Willamette River Greenwav Setback m <br />count towarc e 50 perce preservation requirement. <br />b. Mitigation is not allowed when the Tree Preservation Area <br />Alternative is used to meet tree preservation requirements, except <br />as approved through an adjustment review according to EC <br />9.8030(13). <br />4. Protection Standards. The following notes must be included on the final <br />plan set submitted for approval by the City and shall apply at the time of <br />development: <br />a. "Protective fencing for trees identified to be preserved shall be <br />installed by the applicant and inspected by the City prior to <br />beginning any development activities. All protective tree fencing <br />must remain in place until completion of all construction activities; <br />any relocation, removal, or modification of the protective fencing <br />shall only occur under the direction of a certified arborist and a <br />written explanation of the reason for the relocation, removal, or <br />modification of the protective fencing from the certified arborist <br />must be provided to the City." <br />b. "At the time of building permit, a site plan in compliance with the <br />approved tree preservation and removal plan is required." <br />C. "No excavation, grading, material storage, staging, vehicle parking <br />or other construction activity shall take place within protective tree <br />fencing areas." <br />d. "The removal of trees not designated to be preserved is optional; <br />removal may occur at the owner's discretion." <br />e. "Any tree designated for mitigation must be replaced with one tree <br />selected from the approved species listed in Table 9.6885(2)(de)2 <br />within one year from the date of removal or prior to final <br />14 occupancy, whichever is later. At the time of planting, deciduous <br />trees used for replacement must have a minimum diameter of 2 <br />inches and evergreen trees used for replacement must be a <br />minimum of 6 feet in height as measured according to the 2014 <br />edition of the American Standard for Nursery Stock (ANSI Z60.1), <br />published by the American Nursery and Landscape Association. <br />Maintenance of replacement trees is the ongoing responsibility of <br />the property owner." <br />f. "In the event a tree designated to be preserved must be removed <br />because it is dead, diseased, dying, or hazardous, documentation <br />of the tree's dead, diseased, dying, or hazardous condition by a <br />certified arborist must be provided to the City prior to tree <br />removal. The tree must be replaced with one replacement tree <br />Draft: December 1, 2022 (Minor Revisions January 20, 2023) <br />Page 11 of 25 <br />Page 29 of 43 <br />