Wash. Admin. Code § 16-350-050
Statutory Authority: Chapter 15.14 RCW. 00-19-036, § 16-350-050, filed 9/12/00, effective 10/13/00; 90-23-006 (Order 2058), § 16-350-050, filed 11/9/90, effective 12/10/90; Order 1331, § 16-350-050, filed 1/15/74; Order 1300, § 16-350-050, filed 3/26/73; Order 951, Regulation 5, filed 7/2/64; Order 890, Regulation 5, effective 9/17/62.