Any person constructing, repairing, altering or removing any building or structure shall use sufficient guards or protectors to prevent injury to any tree on public property. If any such tree is injured or destroyed by any person constructing, repairing, altering or removing any building or structure, such person shall replace such tree at the person’s own expense, and the City Forester shall supervise the type and size of tree to be planted as replacement for the destroyed tree. (Ord. 19699 § 6, 2-7-12.)