Wash. Admin. Code § 284-58-020
Statutory Authority: RCW 48.02.060, 48.110.150. 08-21-091 (Matter No. 2007-11), § 284-58-020, filed 10/15/08, effective 2/1/09. Statutory Authority: RCW 48.02.060. 98-13-094 (Matter No. R 98-11), § 284-58-020, filed 6/16/98, effective 7/17/98; 82-23-009 (Order R 82-5), § 284-58-020, filed 11/5/82.