If the director of public works finds there is an immediate hazard to public safety he may abate any nuisance as herein defined without following the procedures of this chapter. In such a case a hearing may be held or offered after the abatement, after notice, and if the council, committee or examiner finds that a nuisance existed and that its immediate removal was necessary, the amount of the cost shall be billed and if not paid shall be filed as a lien against the property. (Ord. M-2804 §7, 1989)