Willamette River Greenway Code Amendments <br />Attachment C <br />(1) Diameter Breast Height (d.b.h.) <br />(2) Preservation, removal, or mitigation status <br />(3) Common name, genus and species <br />b. A site plan that includes the following information: <br />(1) The locations of all significant trees on the development site, the <br />Diameter Breast Height (d.b.h.) for each significant tree, whether <br />each significant tree is to be preserved, removed, or mitigated <br />according to EC 9.6885(2)(ed)2., and the location of the critical <br />root zone (CRZ) for each significant tree to be preserved. <br />(2) The location of all existing and/or proposed public and private <br />utility easements, driveways, and areas of grading or excavation <br />on the development site. <br />(3) The location of all existing development on the site as well as the <br />location of development proposed in the land use application <br />that triggers the requirement for a Tree Preservation and <br />Removal Plan. <br />(4) Proposed lot or parcel boundaries. <br />(5) For development sites with any portion located within the South <br />Hills Area, identification of areas at or above 500 feet elevation <br />and areas at or above 900 feet elevation. <br />c. A written statement from a certified arborist or licensed landscape <br />architect that the Tree Preservation and Removal Plan meets EC <br />9.6885(2)( 4) Tree Preservation Requirements. If the Tree Preservation <br />and Removal Plan is prepared by a certified arborist or licensed <br />landscape architect, then the written statement otherwise required by <br />this subparagraph is not required. <br />Mitigation. An applicant may elect to mitigate a portion of the minimum <br />preservation of significant trees on the development site as provided below: <br />a. The maximum d.b.h. that can be mitigated shall be based on location <br />category as provided in Table EC 9.6885(2)(de) Tree Preservation and <br />Mitigation. <br />b. Proposed subdivisions in areas outside of the South Hills Area and <br />of itside of the Willamette River Greenway Boundary may mitigate up to <br />100% of the minimum tree preservation requirement by either: <br />(1) Providing that lots up to 7,000 square feet in area will contain a <br />1911 minimum of two trees and lots 7,000 square feet or more will <br />contain a minimum of three trees; or, <br />(2) Providing one replacement tree for each significant tree <br />designated for mitigation. <br />C. Reauired mitigation may only occur within the Willamette River <br />Greenway Setback if the proposed trees to be planted are selected from <br />the native trees included on the City's adopted list of plant species for <br />sites at or below 500 feet in elevation. attached as Exhibit F to <br />Ordinance No. 20351. <br />d_c. Installation and Maintenance. Unless otherwise specified, each <br />significant tree designated for mitigation must be replaced with one <br />tree selected from the approved species listed in Table 9.6885(2)(ed)2 <br />within one year from the date of removal or prior to final occupancy, <br />Draft: December 1, 2022 (Minor Revisions January 20, 2023) <br />Page 7 of 25 <br />Page 25 of 43 <br />