Okla. Stat. tit. 82 § 604
If the report of the board of appraisers includes recommendations that other lands be included in the district, or that certain lands be excluded from the district, it shall be the duty of the court clerk where the proceeding is pending to give notice to the owners of such property by publication, to be made as provided in this act for a hearing on the petition for the creation of the district. Such notice to those owners whose lands are to be added to the district may be substantially as shown in the schedule herein. The time and place of the hearing may be the same as those of hearing of appraisals. To the owners of property to be excluded from the district it will be sufficient to notify them of that fact, which notice may be recorded with acknowledgment of the owner.
Okla. Stat. tit. 82, § 604