The ordinance codified in this chapter is hereby declared to be urgent and required for the immediate preservation of the public peace, health and safety and shall take effect upon its passage. The City Council finds that there now exist in the City of Sebastopol many buildings and structures which are structurally unsafe or are dilapidated from old age, neglect, decay or other causes as to constitute an immediate hazard to the public peace, health and safety of the citizens of the City of Sebastopol. In order to protect the public peace, health and safety of the citizens of the City of Sebastopol, which are in imminent danger, immediate action is necessary to correct said conditions by the repair or demolition of said unsafe structures.