Wash. Admin. Code § 220-356-100
[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 § 220-356-100, filed 2/15/17, effective 3/18/17. Statutory Authority: RCW 75.08.080. WSR 98-05-043, § 220-49-017, filed 2/11/98, effective 3/14/98; WSR 94-12-009 (Order 94-23), § 220-49-017, filed 5/19/94, effective 6/19/94; WSR 89-14-010 (Order 89-48), § 220-49-017, filed 6/22/89; Order 1105, § 220-49-017, filed 12/28/73.]