An ordinance passed by the Commission may be subject to referendum only in accordance with the following procedures.
(a) Notice petition. Within ten (10) days of the passage of an ordinance, a petition shall be filed with the Clerk which has been signed by at least one hundred (100) electors of the city and notifies the city of the intention to circulate a petition to submit the ordinance to a referendum. Filing this petition shall automatically suspend the effective date of the ordinance in question until thirty (30) days after its final passage. Failure to file a petition in accordance with this section shall preclude the right to seek a referendum and the ordinance shall become effective in accordance with Chapter VII.
(b) Referendum petition. A petition for referendum prepared in accordance with section 8.4 must be filed with the Clerk subsequent to filing a notice petition but prior to the end of the thirty (30) day period described in section 8.3(a). Within ten (10) days of filing the petition for referendum, the Clerk shall determine the sufficiency of the petition and notify the person who filed the petition of the adequacy or inadequacy thereof. The effective date of the ordinance shall continue to be suspended during this time period. If the Clerk does not approve the petition for referendum, the ordinance subject to the petition shall become immediately effective and the right of referendum with respect to the ordinance shall cease. If the Clerk approves the petition for referendum, the Clerk shall submit the petition to the Commission at its next regular meeting and the effective date of the ordinance subject to the petition shall continue to be suspended pending either repeal by the Commission or final determination by the electors in accordance with section 8.5.