Wash. Admin. Code § 173-503-090
Statutory Authority: Chapters 43.27A, 90.54, 90.22, and 90.82 RCW. 06-11-070 (Order 05-15), § 173-503-090, filed 5/15/06, effective 6/15/06. Statutory Authority: Chapters 90.54 and 90.22 RCW, and chapter 173-500 WAC. 01-07-027 (Order 99-05), § 173-503-090, filed 3/14/01, effective 4/14/01.