Wash. Admin. Code § 415-112-520
[Statutory Authority: RCW 41.50.050(5). WSR 06-18-006, § 415-112-520, filed 8/24/06, effective 9/24/06. Statutory Authority: RCW 41.50.050. WSR 99-14-008, § 415-112-520, filed 6/24/99, effective 7/25/99. Statutory Authority: RCW 41.50.050(6) and 41.50.090. WSR 78-03-023 (Order IV), § 415-112-520, filed 2/15/78. Formerly WAC 462-28-020.]