Wash. Super. Ct. Civ. Arb. R. SCCAR 6.2
Filing and Service of Award. Within 14 days after the conclusion of the arbitration hearing, the arbitrator shall file the award with the clerk of the superior court, with proof of service upon each party. On the arbitrator's application in cases of unusual length or complexity, the arbitrator may apply for and the court may allow up to 14 additional days for the filing and service of the award. If the arbitrator fails to timely file and serve the award and proof of service, a party may, after notice to the arbitrator, file a motion with the court for an order directing the arbitrator to do so by a date certain. Late filing shall not invalidate the award. The arbitrator may file with the court and serve upon the parties an amended award to correct an obvious error made in stating the award if done within the time for filing an award or upon application to the superior court to amend.
Wash. Super. Ct. Civ. Arb. R. SCCAR 6.2