Wash. Admin. Code § 220-412-010
Statutory Authority: RCW 77.12.047. 09-13-031 (Order 09-111), § 232-12-227, filed 6/9/09, effective 7/10/09. Statutory Authority: RCW 77.12.040 and 77.32.155. 97-22-003, § 232-12-227, filed 10/23/97, effective 11/23/97. Statutory Authority: RCW 77.12.040. 95-02-070 (Order 94-146), § 232-12-227, filed 1/4/95, effective 1/4/95. Statutory Authority: RCW 77.32.050 and 77.32.070. 90-19-087 (Order 458), § 232-12-227, filed 9/18/90, effective 10/19/90. Statutory Authority: RCW 77.32.155. 85-16-004 (Order 260), § 232-12-227, filed 7/25/85. Statutory Authority: RCW 77.12.040. 81-12-029 (Order 165), § 232-12-227, filed 6/1/81. Formerly WAC 232-12-500.