Admin Order 58-03-19-F - Laserfiche WebLink

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roots, trunk, or limbs, a Tree Removal Permit is required. A Certified Arborist's written report approved by the Urban Forester that shows the Critical Root Zone (CRZ) to have developed in a location not impacted by the proposed construction may relieve the need for a Tree Removal Permit. (c) The tree preservation plan shall include notes and drawings on how all street trees that are shown to be retained are to be protected. City of Eugene Standard Tree Protection Drawing E-97 (City Standard Specifications) is a minimum standard for tree protection for street trees. (d) The critical root zone for trees 4 inches or smaller in diameter at breast height (dbh) - measured at 4.5 feet above grade) shall be an area with a radius of at least 5 feet from the trunk. The critical root zone for trees over 4 inches in dbh shall be an area with a radius of at least 18 inches from the trunk for every 1 inch of dbh. (Compliance with this criteria can be demonstrated by providing reports or plans developed by an arborist certified by the International Society of Arboriculture documenting the condition of trees proposed for preservation or removal and recommending effective tree protection during construction.) 9. Non Right-of--Way Trees: The construction plans shall show all trees 8 inches or larger in diameter at breast height (dbh) on private property where the proposed work within theright- of-way will impact more than 30 percent of the critical root zone. A certified arborist's report shall be required documenting the existing condition of the tree and evaluating its ability to survive the proposed work. If the arborist report shows the tree either will not survive construction impacts or that construction impacts will leave the tree in a hazardous condition, the applicant must obtain written permission from the private property owner to allow the tree to be removed and obtain a Tree Removal Permit, if otherwise required by EC chapter 6 or 9. 10. Geometric Standards for a Type Two TSP: (a) Minimum pavement width shall be 17 feet for a fully dedicated street right-of--way. For all other dedicated rights-of--way, a minimum pavement width will allow for a 1 foot wide un-surfaced strip on each side within the dedicated right-of--way. (b) The minimum depth shall be 4 inches for any new improvement using asphalt concrete pavement. (c) The minimum aggregate base depth shall be 6 inches of 3/4"-0 aggregate for any new improvement, and compacted to a reasonable density by use of mechanical means. Utility & R/W Permit Manual Exhibit A - 23 C:\WINDOWS\Temporary Internet Files\OLKB202\03rowrlexa.wpd -Manual (03ROWR 1).WPD(11/07/03)