[Statutory Authority: Chapter 70.107 RCW. WSR 00-24-134 (Order 00-24), § 173-60-070, filed 12/6/00, effective 1/6/01; WSR 94-12-001 (Order 92-41), § 173-60-070, filed 5/18/94, effective 6/18/94; Order DE 77-1, § 173-60-070, filed 6/1/77; Order 74-32, § 173-60-070, filed 4/22/75, effective 9/1/75.]