Wash. Admin. Code § 220-100-020
Statutory Authority: RCW 77.12.047. 03-10-038 (Order 03-83), § 220-100-020, filed 4/30/03, effective 5/31/03. Statutory Authority: RCW 75.08.080. 84-19-053 (Order 84-144), § 220-100-020, filed 9/18/84; 78-05-029 (Order 78-17), § 220-100-020, filed 4/17/78; Order 76-40, § 220-100-020, filed 5/25/76.