Wash. Rev. Code § 7.04A.240
(1) Upon motion filed within ninety days after the movant receives notice of the award in a record under RCW 7.04A.190 or within ninety days after the movant receives notice of an arbitrator's award in a record on a motion to modify or correct an award under RCW 7.04A.200, the court shall modify or correct the award if:
[ 2005 c 433 s 24.]