(1) If there is a danger that all or a substantial portion of any tree or trees located on private property might fall on any public alley, street or any other public property, this would be sufficient evidence that such tree or trees constitute a nuisance.

(2) When a tree exists that would constitute a nuisance, except that the tree is located on public property, the superintendent shall abate such nuisance.

(3) If a tree that constitutes a nuisance exists upon private property, the property owner shall abate such nuisance.

(4) If such a tree exists partially on public property and partially on private property, or on two or more private property lots, the owners of the property shall be jointly responsible for abatement of such nuisance. [Ord. 435, 1993; Code 1975 § 6-2.0108.]