[Statutory Authority: RCW
28A.150.290. WSR 09-04-082, § 392-122-600, filed 2/3/09, effective 3/6/09. Statutory Authority: RCW
28A.150.290, 1989 1st ex.s. c 19 and 1990 1st ex.s. c 16. WSR 91-03-118 (Order 2), § 392-122-600, filed 1/23/91, effective 2/23/91. Statutory Authority: RCW
28A.41.170. WSR 84-20-078 (Order 84-36), § 392-122-600, filed 10/2/84; WSR 84-13-020 (Order 84-10), § 392-122-600, filed 6/13/84.]