Section 6.6 ACTION ON PETITIONS.
   (a)   ACTION BY COUNCIL. When an initiative or referendum petition has been finally determined sufficient, the City Council shall promptly consider the proposed initiative ordinance in the manner provided in Section 5.3 or reconsider the ordinance by voting its repeal. If the City Council fails to adopt a proposed initiative ordinance without any change in substance within 60 days or fails to repeal the referred ordinance within 30 days after the date the petition was finally determined sufficient, it shall submit the proposed or referred ordinance to the electors of the City.
   (b)   SUBMISSION TO VOTERS. The vote of the City electors on a proposed or referred ordinance shall be held not less than 30 days and not later than one year from the date of the final City Council vote thereon. If no regular City election is to be held within the period prescribed in this subsection, the City Council shall provide for a special election; otherwise, the vote shall be held at the same time as such regular election, except that the City Council may in its discretion provide for a special election at an earlier date within the prescribed period. Copies of the proposed or referred ordinance shall be made available at the polls.
   (c)   WITHDRAWAL OF PETITIONS. An initiative or referendum petition may be withdrawn at any time prior to the fifteenth day preceding the day scheduled for a vote of the City by filing with the City Clerk-Treasurer a request for withdrawal signed by at least four members of the Petitioner's Committee. Upon the filing of such request the petition shall have no further force or effect and all proceedings thereon shall be terminated.