Wash. Admin. Code § 220-74-020
Statutory Authority: RCW 77.100.060. 02-10-023 (Order 02-79), § 220-74-020, filed 4/23/02, effective 5/24/02. Statutory Authority: RCW 75.08.080. 79-10-013 (Order 79-75), § 220-74-020, filed 9/7/79; 78-09-071 (Order 78-66), § 220-74-020, filed 8/25/78.