provided, however, if the planning commission fails to make such a determination within the prescribed sixty (60) days, or makes a determination to the contrary, not less than four-fifths (4/5) majority vote of the municipal governing body shall be required to make this finding;
Public hearings required for the adoption of an urban renewal plan in the first instance shall be held if the governing body determines the modification to be a significant deviation from the existing urban renewal plan, in which case approval of the modification shall be in the same manner as prescribed by this article for adoption of any urban renewal plan. If the governing body determines the modification not to be a significant deviation or to be merely technical or for clarification purposes, the governing body may act without such public hearings.
Okla. Stat. tit. 11, § 38-106