Wash. Admin. Code § 390-20-105
Statutory Authority: RCW 42.17.370(1). 02-03-018, § 390-20-105, filed 1/4/02, effective 2/4/02; 88-14-064 (Order 88-02), § 390-20-105, filed 7/1/88; 85-24-020 (Order 85-05), § 390-20-105, filed 11/26/85; Order 62, § 390-20-105, filed 8/26/75.