Okla. Stat. tit. 52, § 142

Each environmental agency in pursuance of its duties with respect to the protection of the environment and natural resources of the state is authorized and it shall be its duty to assist and cooperate with the Commission in the performance of its duties under this act by making investigations, gathering evidence and filing reports or complaints with the Commission concerning conditions with respect to the handling, storage and disposition of deleterious substances and by making recommendations from time to time to the Commission with respect to rules, regulations, orders or other action that may be required to carry out the purpose of this act.