Wash. Admin. Code § 390-12-040
Statutory Authority: RCW 42.17.370(1). 02-03-018, § 390-12-040, filed 1/4/02, effective 2/4/02. Statutory Authority: RCW 42.17.370. 91-24-011, § 390-12-040, filed 11/22/91, effective 12/23/91. Statutory Authority: RCW 42.17.370(1). 85-15-020 (Order 85-03), § 390-12-040, filed 7/9/85; Order 62, § 390-12-040, filed 8/26/75; Order 42, § 390-12-040, filed 9/26/74; Order 9, § 390-12-040, filed 4/24/73.