Wash. Admin. Code § 392-122-600
Statutory Authority: RCW 28A.150.290. 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. 91-03-118 (Order 2), § 392-122-600, filed 1/23/91, effective 2/23/91. Statutory Authority: RCW 28A.41.170. 84-20-078 (Order 84-36), § 392-122-600, filed 10/2/84; 84-13-020 (Order 84-10), § 392-122-600, filed 6/13/84.