Wash. Admin. Code § 220-600-090
[Statutory Authority: RCW 77.04.012, 77.04.013, 77.04.020, 77.04.055, and 77.12.047. WSR 17-05-112 (Order 17-04), recodified as § 220-600-090, filed 2/15/17, effective 3/18/17. Statutory Authority: RCW 77.12.047. WSR 03-10-038 (Order 03-83), § 220-100-058, filed 4/30/03, effective 5/31/03.]