SECTION 18.04 THE REFERENDUM.
   The referendum shall not be applicable to:
   (a)   Resolutions making or transferring annual appropriations, or amendments thereto;
   (b)   Measures providing for the discharge of any obligation legally due from the City;
   (c)   Measures submitting any measure to a vote of the electors;
   (d)   Measures directing the performance of any official duty or providing for investigations or reports;
   (e)   Measures not having the force or effect of law;
   (f)   Repealing measures passed by Council pursuant to referendum petitions;
   (g)   Measures relating to any public improvement subsequent to the resolution determining to proceed therewith;
   (h)   Measures for public improvements petitioned for by the owners of the majority of the foot frontage benefitted and to be specially assessed for the cost thereof.
   All emergency ordinances shall be subject to the referendum. However, emergency ordinances shall be effective until repealed by the vote in the referendum.
   The effective date of any measure subject to referendum other than emergency measures shall be postponed by the filing of a referendum petition within forty (40) days after the passage thereof, unless the committee herein provided shall certify that the petition is invalid or insufficient, in which event such ordinance shall take effect in accordance with the other provisions of this Charter.
   Each referendum petition certified to be valid and sufficient shall upon presentation be referred by Council to a committee to hold a public hearing thereon and to report its recommendation at the next regular meeting of Council. Council shall, not later than the second regular meeting following such reference, either pass the repealing measure or take appropriate action to submit it to a vote of the electors at the next regular or primary election to be held not less than sixty (60) days after the filing of appropriate notice with the Board of Elections. If the repealing measure is approved by a majority of the electors voting thereon, the measure shall not take effect. Otherwise, the measure shall take effect immediately upon official certification of the result of such election.