Wash. Admin. Code § 458-20-118
Statutory Authority: RCW 82.32.300. 91-02-056, § 458-20-118, filed 12/28/90, effective 1/28/91; 83-07-034 (Order ET 83-17), § 458-20-118, filed 3/15/83; Order ET 70-3, § 458-20-118 (Rule 118), filed 5/29/70, effective 7/1/70.