No person owning or operating any bus line or other motor transportation over the City streets, or any public utility lines upon, above, or below the surface, shall trim, cut, or cause it to be trimmed or cut, any tree in any public way or park, without first having submitted to the Park Board a plan of the work to be done and having procured a permit for such work. Nothing in this section shall be construed to apply to the removal, under the direction of the Park Board, of any stump, roots, tree, shrub, vine, plant, or part there-of, wherever such removal shall be found necessary in the construction, or repair of any street, sidewalk, sewer, pavement, or other public improvement.
('88 Code, Title III, Ch. 32, § 3.26) Penalty, see § 93.99