Wash. Admin. Code § 480-90-178
Statutory Authority: RCW 80.01.040 and 80.04.160. 11-06-032 (Docket U-100523, General Order R-563), § 480-90-178, filed 2/25/11, effective 3/28/11; 01-11-003 (Docket No. UG-990294, General Order No. R-484), § 480-90-178, filed 5/3/01, effective 6/3/01.