Wash. Admin. Code § 458-20-209
Statutory Authority: RCW 82.32.300, 82.01.060(2), chapters 82.04, 82.08, 82.12 and 82.32 RCW. 10-06-070, § 458-20-209, filed 2/25/10, effective 3/28/10. Statutory Authority: RCW 82.32.300. 94-07-050, § 458-20-209, filed 3/10/94, effective 4/10/94; 83-08-026 (Order ET 83-1), § 458-20-209, filed 3/30/83; Order ET 70-3, § 458-20-209 (Rule 209), filed 5/29/70, effective 7/1/70.