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• 6.10.1 No tree shall be planted where the roo ting feet (4') in width without prior approval of the Urban Forestter� less four 6.10.2 The minimum width of a planting • site for each tree shall governed by the approved street tree list. be 6.10.3 No trees that commonly produce a large buttress root system shall be planted in a site less than eight feet (8') wide (i.e., Quercus phellos • macrophyllum, Liguidambar styraciflua). Ater 6.11. Width. of mEthane: No tree shall be planted in an m ten feet (10') in width. On State. tights -of -way, Oregon DepartY ., t o f that, is less than "Guidelines for Planting Within. Highway apply. Y Right-of-Way" ent of Transportation's • 6.12 Exemptions to hP rt i,t ,* ;,,, .,,. waive,th :where special conditions exist, the Urban Forester may Y ese tree planting location standards. Such a waiver shall be on a case by case basis. • 7, street Trc 1'Iariting s • 7.1 Pl nting 4aacAn Bare root trees Ana be and.141arch� 15th unless . otherwise Y Ply °�� between fiber 15th e approved by the. Urban Forester. Balled and burlapped or confainer,grown trees may y be planted only between September 15dr and April 15th ' .unless otherwise approved by the-Urban Forester.. 7 : Site preparation 7.2.1 Balled and btirlapped and container grown trees: 7.2.1.1 Dig a shallow, : broad tree l p anting hole at least 1-1/2 times the diameter of the root ball and to a depth that will allow the trunk flare to be level with existing ground. (See Appendix B.) 7.2.1.2 Score the edge of the hole to leave the edges rough an d not smooth. This will encourage rooting into the existing native ,soil. 7.2.2 Bare - root stock: 7.2.2.1 Dig tree planting holes 1' wider than the spread of the roots to allow the roots sufficient area The hole shall have sufficient depth to allow the trunk flare to be level with the existing ground. (See Appendix B.) Administrative Order - 14