Wash. Admin. Code § 220-49-021
Statutory Authority: RCW 75.08.080. 98-05-043, § 220-49-021, filed 2/11/98, effective 3/14/98; 94-12-009 (Order 94-23), § 220-49-021, filed 5/19/94, effective 6/19/94; Order 76-148, § 220-49-021, filed 12/2/76; Order 1193, § 220-49-021, filed 3/4/75; Order 1105, § 220-49-021, filed 12/28/73.