Wash. Admin. Code § 220-56-372
Statutory Authority: RCW 77.04.012, 77.04.013, 77.04.055, 77.12.045, and 77.12.047. 13-02-043 (Order 12-290), § 220-56-372, filed 12/21/12, effective 1/21/13. Statutory Authority: RCW 75.08.080, 77.12.040. 00-08-038 (Order 00-29), § 220-56-372, filed 3/29/00, effective 5/1/00. Statutory Authority: RCW 75.08.080. 96-05-004 (Order 96-13), § 220-56-372, filed 2/9/96, effective 5/1/96; 87-09-066 (Order 87-16), § 220-56-372, filed 4/21/87; 83-07-043 (Order 83-16), § 220-56-372, filed 3/17/83; 82-07-047 (Order 82-19), § 220-56-372, filed 3/18/82; 80-13-064 (Order 80-123), § 220-56-372, filed 9/17/80.