Wash. Admin. Code § 220-55-160
Statutory Authority: RCW 77.04.020 and 77.12.047. 11-16-103 (Order 11-184), § 220-55-160, filed 8/3/11, effective 9/3/11. Statutory Authority: RCW 77.12.047. 06-13-023 (Order 06-135), § 220-55-160, filed 6/13/06, effective 7/14/06. Statutory Authority: RCW 75.08.080 and 77.12.040. 99-08-029 (Order 99-13), § 220-55-160, filed 3/30/99, effective 5/1/99.