For at least 20 days before it adopts, amends, or repeals any rule, the Board shall accept data, views, arguments or other comments, presented orally or in writing, on the proposed rule, amendment or repeal. The Board will conduct a public hearing on a proposed rule if requested, in writing, by at least twenty-five persons, a political subdivision, an association having at least twentyfive members or a constitutionally or statutorily created state board, bureau, commission, department, authority, public trust in which the state is a beneficiary or an interstate commission.
Okla. Admin. Code § 510:1-7-1