(a) All public trees located near any excavation or construction of any building, structure or street work, shall be guarded with a good substantial fence, frame or box not less than four feet high placed at the edge of the Critical Root Zone, measured as a distance of one foot per inch of DBH of the tree or beyond the dripline, whichever is larger. All laborers, building material, dirt or other debris shall be kept outside this barrier. The Tree Commission may permit a variance in cases where the barrier would impede the flow of traffic on a street, private street or driveway and where the prescribed distance interferes with a building or permanent structure.
(b) No person shall excavate any ditches or trenches within the Critical Root Zone of a public tree or lay any impervious pavementwithin fifteen feet of a public tree without first obtaining the written approval of the Tree Commission.
(Ord. 16-92. Passed 7-27-92; Ord. 20-15. Passed 12-28-15.)