The owner, or his agent, of every lot or parcel of land in the City upon which there exists a dead or dangerous tree shall, within fourteen days of delivery of a written notice of the City Forester cause such tree to be removed or pruned. The notice and written order may be served in person or left at the owner's usual place of residence. Service of the written notice and order may be by the City Forester or his agent. If the person to whom such notice is addressed cannot be found within the City, then such notice may be sent by registered or certified mail to the last known address of such person. If there is no last known address of such person or the mail is returned, a notice and order may be published once in a newspaper of general circulation within the City.
A dangerous tree shall be any tree that, in the opinion of the City Forester, represents a clear and present danger of falling because of its condition, or any tree that has dead, decayed or broken limbs or branches that create a danger or hazard to the life, safety or property of the people of this City.
A dangerous tree shall also include one that obstructs or shades streetlights, obstructs the passage of pedestrians on sidewalks or obstructs the view of any street or alley intersection. The minimum clearance of any overhanging tree branch or portion thereof shall be fifteen and one-half feet above the pavement of any sidewalk, alley, street or principal thoroughfare.