(2) Adoption of rules, conduct of hearings, issuance of orders and judicial review of rules and orders shall be as provided in ORS chapter 183. Contested case hearings shall be conducted by an administrative law judge assigned from the Office of Administrative Hearings established under ORS 183.605. [1971 c.734 §186; 1981 c.88 §14; 1993 c.796 §10; 1999 c.849 §§181,182; 2003 c.75 §64]