Wash. Admin. Code § 220-77-020
Statutory Authority: RCW 77.12.047. 02-06-018 (Order 02-35), § 220-77-020, filed 2/22/02, effective 3/25/02; 02-02-013 (Order 01-281), § 220-77-020, filed 12/21/01, effective 1/21/02. Statutory Authority: RCW 75.08.080. 97-08-078 (Order 97-56), § 220-77-020, filed 4/2/97, effective 5/3/97. Statutory Authority: RCW 75.58.010. 87-08-033 (Order 87-20), § 220-77-020, filed 3/27/87.