Wash. Admin. Code § 308-15-020
Statutory Authority: RCW 18.220.040. 07-13-038, § 308-15-020, filed 6/13/07, effective 7/14/07. Statutory Authority: RCW 18.220.040, 18.220.050. 05-01-174, § 308-15-020, filed 12/21/04, effective 1/21/05. Statutory Authority: Chapter 18.220 RCW. 01-12-023, § 308-15-020, filed 5/25/01, effective 6/25/01.