4.09.  ZONING ORDINANCES .
   (a)   PUBLIC HEARING NOTICE.
      As to any zoning ordinance, initiated by an applicant or by Council, the Clerk of Council or designee shall mail written notice of the public hearing to the owners of the property within, contiguous to and directly across the street from the affected parcel or parcels. The failure of delivery of the notice shall not invalidate any zoning ordinance.
   (b)   DISPOSITION PROCEDURES.
      Council, by ordinance, shall establish procedures for the disposition of ordinances establishing, amending, revising, changing or repealing zoning classifications, districts, uses or regulations.
   (c)   VOTING REQUIREMENTS.
      The following voting requirements shall apply to zoning ordinances:
      (1)   an affirmative vote of at least four Council members shall be necessary to adopt or defeat a zoning ordinance as to which the Planning and Zoning Commission has recommended approval or has made no recommendation.
      (2)   an affirmative vote of at least five Council members shall be necessary to adopt a zoning ordinance as to which the Planning and Zoning Commission has recommended against approval.