The owner or occupant of any lot, piece, or parcel of ground abutting or adjacent to any sidewalk over which there extends the branches of trees shall at all times keep the branches or limbs thereof trimmed to the height of at least eight (8') feet above the surface of said walk. Whenever the limbs or branches of any tree or trees extend over sidewalks contrary to the provisions herein so as to interfere with the lighting of the street from street lights, or with the convenience of the public using said sidewalk, the Governing Body at any regular or special meeting may pass a resolution ordering the owner or occupant to cut or remove said obstructions within five (5) days after having received a copy thereof from the Street Superintendent stating that the Municipality will remove said branches and charge the costs thereof to the owner or occupant as a special assessment for improvements as herein provided, if said resolution is not complied with. In the event the property owner is a non-resident of the county in which the property lies, the Municipality shall, before levying any special assessment against that property, send a copy of any notice required by law to be published by means of certified mail, return receipt requested to the last known address of the non-resident property owner. The last known address shall be that address listed on the current tax rolls at the time such required notice was first published. (Ref. 17-557.01 RS Neb.)