Wash. Admin. Code § 326-08-130
(1) An initial order will become final without further action by the office unless, within ninety days of the service of the initial order:
[Statutory Authority: RCW 39.19.030(7). WSR 92-15-077, § 326-08-130, filed 7/16/92, effective 8/16/92. Statutory Authority: Chapter 39.19 RCW. WSR 84-09-002 (Order 84-5), § 326-08-130, filed 4/5/84.]