Wash. Admin. Code § 446-20-020
For the purpose of this section the following apply:
[Statutory Authority: Chapters 10.97 and 43.43 RCW. WSR 21-05-044, § 446-20-020, filed 2/11/21, effective 3/14/21; WSR 10-01-109, § 446-20-020, filed 12/17/09, effective 1/17/10. Statutory Authority: RCW 10.97.090. WSR 91-24-099 (Order 91-004), § 446-20-020, filed 12/4/91, effective 1/4/92. Statutory Authority: 1990 c 3. WSR 90-20-003 (Order 90-003), § 446-20-020, filed 9/20/90, effective 10/21/90. Statutory Authority: RCW 43.43.838 and 1987 c 486 § 5. WSR 88-07-066 (Order 88-03-A), § 446-20-020, filed 3/17/88. Statutory Authority: RCW 10.97.080 and 10.97.090. WSR 80-08-057 (Order 80-2), § 446-20-020, filed 7/1/80.]