The City Tree Board or their official designee may enter onto private properly with the owner's prior permission whereon there is located a tree, shrub, plant or plant part that is suspected to be a public nuisance and to request its removal, if necessary. For the purposes of this Chapter, public nuisance is defined as any tree, shrub, plant or plant part with an infectious disease or insect problem; dead or dying trees, a tree, shrub, plant or limbs that obstruct street lights, traffic signs, the free passage of pedestrians or vehicles; or a tree, shrub, plant or plant part that poses a threat to safety of the public. If the City Tree Board finds a condition constituting a public nuisance as defined in this Chapter, they shall give the property owner written notice by mail requesting abatement of the nuisance within sixty (60) days. If the property owner fails to abate the nuisance within sixty (60) days, the City may abate the nuisance including removal of the tree, shrub, plant or plant part, and bill the property owner for the costs incurred by the City if action is not taken by the property owner. The notice to the property owner shall also notify the owner of the City’s right to abate the nuisance and collect the cost from the property owner, including assessment of a lien against the subject property for collection of the debt. Nothing herein shall require the City to affirmatively search for trees or shrubs that constitute a public nuisance, or to abate such nuisance if found, but instead is contemplated to give the City authority to deal with a public nuisance if one is found to exist.