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B. Encompasses an area determined for an individual tree to be the necessary root area <br />for the tree's continued normal growth as demonstrated in a written report by a <br />certified arborist and based on documented field investigation and non-destructive <br />physical testing, including, but not limited to non-destructive excavation to delineate <br />the root system to a'minimum depth of 24 inches below grade, and no more than 48 <br />inches below grade. <br />Diameter breast height (dbh): The diameter of a tree trunk or trunks measured at 4.5 feet <br />above mean ground level at the base of the trunk or trunks. <br />Owner/Developer: Any individual or legal entity that has entered into an agreement with the <br />City for the purpose of constructing public improvements. <br />Plans: Construction drawings that show the location, type, dimensions, and details of the <br />work to be performed under the agreement. <br />Project: The work to be performed under the agreement. <br />Project Engineer: An Oregon Registered Professional Engineer (per ORS 672.002 to 672.325) <br />responsible for the engineering design of the public improvements. <br />Project Manager: An individual tasked with the initiation, planning, coordination, execution, <br />delivery and closeout of a project. The Project Manager serves as the primary point of contact <br />for all project related issues. <br />Shared Use Path: A paved, off-street travel way designed to serve non -motorized travelers <br />and maintenance vehicles. <br />Standard Specifications and. Drawings (aka Standard Specifications and/or Standard <br />Drawings): The Oregon Standard Specifications for Construction Volumes 1 and 2, and the <br />Oregon Standard Drawings, both as revised by the City Amendments adopted by <br />memorandum of the City Engineer in effect. <br />Street Grades: Synonymous with curb grade, as the vertical profile of roadways is defined by <br />the top of curb alignment. <br />Work: The furnishing of labor, materials, equipment, and other incidentals required to survey <br />and design public improvements proposed for construction. <br />Public Improvement Design Standards Manual, 2016 Page 1-2 <br />