[Statutory Authority: Chapter
90.58 RCW. WSR 17-17-016 (Order 15-06), § 173-20-380, filed 8/7/17, effective 9/7/17. Statutory Authority: RCW
90.58.120 and
90.58.200. WSR 81-13-013 (Order DE 81-17), § 173-20-380, filed 6/11/81; Order DE 76-16, § 173-20-380, filed 5/3/76; Order DE 73-13, § 173-20-380, filed 8/27/73; Order DE 72-14, § 173-20-380, filed 6/30/72.]