An ordinance may be initiated by petition at any time by filing with the Clerk a petition for initiative prepared in accordance with section 8.4. Within ten (10) days of filing the petition, the Clerk shall determine the sufficiency of the petition and shall notify the person who filed the petition of the adequacy or inadequacy of the petition. Any signatures obtained more than ninety (90) days before the filing of the petition with the Clerk shall not be counted. If the petition is found to contain an insufficient number of valid signatures or to otherwise fail to comply with this chapter, then the person filing the petition shall be allowed ten (10) days from notification of the non-compliance to file supplemental petition papers to correct the defects in the petition. This additional ten (10) day period shall not disqualify valid signatures obtained within ninety (90) days of filing the original petition with the Clerk. Only one (1) supplemental filing shall be allowed. When a petition meets all applicable requirements, the Clerk shall present it to the Commission at its next regular meeting.