(1) All trees located in the public right-of-way shall be protected during all construction or excavation work by a substantial fence, frame, or box not less than four feet high and eight feet square, or the distance in feet from the tree equal to the diameter of the trunk in inches Breast Height Diameter, whichever is greater, and all building materials, dirt, or other debris shall be kept outside the barrier.

(2) No person shall excavate any ditch, tunnel, trench, or lay any driveway or make a curb cut within a radius of ten feet of any street tree without first seeking approval from the municipal arborist.

(3) Definition and retention of significant trees (See: Chapter 17.45.070). (Ord. 97-36 §8, 1997).