Wash. Admin. Code § 232-16-140
Statutory Authority: RCW 77.12.040. 99-17-034 (Order 99-118), § 232-16-140, filed 8/11/99, effective 9/11/99; Temporary Regulation 229, filed 9/15/64; Temporary Regulation 212, filed 10/3/62; Regulation 139 (part), filed 3/21/60.