Okla. Stat. tit. 19, § 19-866.20: Amendment or repeal of regulations - Notice and

hearing.

The zoning regulations imposed and the districts created under

authority of this act may be amended, supplemented, changed,

modified or repealed from time to time by resolution of the board,

as it affects its jurisdiction, but no such change shall be made

without public notice and hearing and the filing of a report and

recommendations upon such proposed change by the commission.

All projects or matters that fall within the purview of the

duties of the commission, as specified in this section shall be

referred to the commission for investigation and report before any

final action shall be taken thereon; provided, however, that if the

said commission fails to make an investigation and report on any

matter or subject referred to it for a period of thirty (30) days,

such failure shall be considered a refusal to approve the proposed

plan or project and the board shall be under no obligation to wait

longer for reports or recommendations concerning said projects.