Wash. Admin. Code § 220-22-400
Statutory Authority: RCW 75.08.080. 83-24-024 (Order 83-200), § 220-22-400, filed 11/30/83, effective 1/1/84; 82-24-080 (Order 82-215), § 220-22-400, filed 12/1/82, effective 1/1/83; 78-05-018 (Order 78-16), § 220-22-400, filed 4/13/78; Order 76-148, § 220-22-400, filed 12/2/76.