Wash. Admin. Code § 392-121-570
Statutory Authority: RCW 28A.150.290. 13-05-049, § 392-121-570, filed 2/13/13, effective 3/16/13. Statutory Authority: 2002 c 371 § 502(2) and RCW 28A.150.290. 04-01-058, § 392-121-570, filed 12/11/03, effective 1/11/04.