Okla. Stat. tit. 19, § 19-863.17: Amendment or repeal of regulations - Hearing and

notice.

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modified or repealed from time to time by resolution of the board as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. In

case of written protest against any proposed change, signed by the

owners of twenty percent (20%) or more of the area of land in such

proposed change, or by the owners of twenty percent (20%) or more of

the frontage within one thousand feet (1000') to the right or left

of the frontage proposed to be changed, or by the owners of twenty

percent (20%) or more of the frontage directly opposite the frontage

proposed to be changed, or in cases where the land affected lies

within one and one-half (1 1/2) miles of the limits of a

municipality having a zoning ordinance, by the governing body of

such municipality filed with the commission, such amendment or

change may not be made except by the unanimous favorable vote of all

members of the board.

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 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.