The referendum shall not be applicable to: (1) ordinances or other measures making or transferring appropriations; (2) ordinances or other measures providing for the discharge of any obligation legally due from the Village; (3) ordinances or other measures submitting any ordinance or measure to a vote of the electors; (4) ordinances or measures directing the performance of any official duty or providing for investigations or reports; (5) ordinances or other measures not having the force or effect of law; (6) repealing measures passed by Council pursuant to referendum petitions; (7) ordinances or other measures subsequent to the first ordinance or measure when a series of legislative steps are required to accomplish the particular purpose or objective of said first ordinance or measure; or (8) emergency ordinances or measures passed by Council pursuant to Section 3.2 of this Charter. The taking effect of all other ordinances and measures shall be postponed by the filing of a referendum petition within 30 days after the passage thereof, unless the Clerk shall certify that the petition is invalid or insufficient. Each repealing measure proposed by a referendum petition finally certified by the Clerk 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 recommendations 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 such action as may be required to submit it to a vote of the electors at the next general or primary election occurring more than 90 days thereafter, or at a special election to be held on a date fixed by Council by a vote of at least five members thereof. If the repealing measure is approved by a majority of the electors voting thereon, the repeal shall take effect immediately; otherwise the ordinance or measure subject to referendum shall either remain in effect or take effect immediately.