The Director of Public Works is hereby authorized to cause to be inspected any free or shrub in the City reported or supposed to be infected, infested by any parasite or insect pest or in any way reported or supposed to be a menace to public property, public health, public safety or public welfare or a public nuisance. If, upon such inspection, the Director determines that such tree or shrub is infected or infested or is a menace to public property, public safety, public health or public welfare or is a public nuisance, he shall, if such tree is located on private property, immediately serve upon the owner of such property a written notice that such tree or shrub must be treated or removed within five days of the service of such notice . If such owner cannot be found, a copy of such notice shall be posted upon the affected tree or shrub. If such tree or shrub is not treated or removed within seven days after the service or posting of such notice, the Director shall cause such tree to be treated or removed, at his reasonable discretion, and, if removed, to be disposed of in accordance with current City practices. The cost of such treatment or removal shall be assessed against the owner of the property in the same manner as in other cases of the abatement of nuisances, and, in default of the payment of such cost, the same shall be assessed against the property on which such tree or shrub is located. In the event that the Director determines that such tree or shrub constitutes an immediate danger to public property, public safety, public health or the public welfare, or constitutes a public nuisance so as to require immediate action, the Director, upon reasonable determination, shall be empowered to cause the immediate treatment or removal of such tree or shrub and assess such costs as set forth in this section. (Ord. 56-90. Passed 6-18-1990.)