Wash. Admin. Code § 458-20-107
Statutory Authority: RCW 82.32.300, 82.01.060(2), and 82.08.050. 08-14-021, § 458-20-107, filed 6/20/08, effective 7/21/08. Statutory Authority: RCW 82.32.300. 90-10-080, § 458-20-107, filed 5/2/90, effective 6/2/90; 86-03-016 (Order ET 86-1), § 458-20-107, filed 1/7/86; 83-07-034 (Order ET 83-17), § 458-20-107, filed 3/15/83; Order ET 70-3, § 458-20-107 (Rule 107), filed 5/29/70, effective 7/1/70.