Okla. Admin. Code § 785:4-7-7
Files and records of the Board which pertain to the subject of the hearing, and books, reports, and other papers or writings which have been prepared and published by any governmental or public agency may, at the discretion of the Hearing Examiner, be officially noticed and received into evidence as exhibits and incorporated by reference without the necessity of supplying copies to the Board and other parties, providing, the original or a copy is in the possession of the Board and available for inspection by any party. The parties offering same shall designate the particular portions on which they rely. Each such matter shall be appropriately identified and designated by number in the record as an exhibit of the party offering same or of the Board or its staff. Certification of such files and records may be waived when it appears there is no valid reason to doubt the authenticity of the document presented. Official notice may also be taken of judicially cognizable facts and of any generally recognized technical or scientific facts within the Board's specialized knowledge.
Okla. Admin. Code § 785:4-7-7