The referendum may be invoked by petition bearing the signatures of the required percentage of qualified voters as to any ordinance, or any section, item or part of any such ordinance allowed by the preceding paragraph, which petition shall be filed with the Finance Director within 30 days following the effective date of said ordinance, as provided in section 3.04 of this Charter, and the filing of such referendum petition as to any such ordinance, or section, item or part thereof, shall operate to abate the ordinance, or any further action thereon, except as hereinafter provided. The Finance Director shall verify the sufficiency of the signatures to the petition and transmit it, together with a report thereon, to the City Council at a regular meeting not more than 20 days after the filing of the petition. [Amended April 18, 2008 (Ord. 2008-04-033)]