[Statutory Authority: RCW
42.17.370(1). WSR 99-12-056, § 390-12-255, filed 5/27/99, effective 6/27/99. Statutory Authority: RCW
42.17.370. WSR 90-16-083, § 390-12-255, filed 7/31/90, effective 8/31/90. Statutory Authority: RCW
42.17.370(1). WSR 81-18-043 (Order 81-03), § 390-12-255, filed 8/28/81.]