Wash. Admin. Code § 390-13-100
Statutory Authority: RCW 42.17.370(1). 10-20-011, § 390-13-100, filed 9/24/10, effective 10/25/10; 02-03-018, § 390-13-100, filed 1/4/02, effective 2/4/02; 98-12-038, § 390-13-100, filed 5/28/98, effective 6/28/98; 85-15-020 (Order 85-03), § 390-13-100, filed 7/9/85; 83-17-138 (Order 83-02), § 390-13-100, filed 8/24/83.