W. Va. Code § 55-10-22: Change of award by arbitrator.

(a) On motion to an arbitrator by a party to an arbitration proceeding, the arbitrator may modify or correct an award:

(1) Upon a ground stated in section twenty-six of this article;

(2) Because the arbitrator has not made a final and definite award upon a claim submitted by the parties to the arbitration proceeding; or

(3) To clarify the award.

(b) A motion under subsection (a) of this section must be made and notice given to all parties within twenty days after the moving party receives notice of the award.

(c) A party to the arbitration proceeding must give notice of any objection to the motion within ten days after receipt of the notice.

(d) If a motion to the court is pending under section twenty-four, twenty-five or twenty-six of this article, the court may submit the claim to the arbitrator to consider whether to modify or correct the award:

(1) Upon a ground stated in section twenty-four of this article;

(2) Because the arbitrator has not made a final and definite award upon a claim submitted by the parties to the arbitration proceeding; or

(3) To clarify the award.

(e) An award modified or corrected pursuant to this section is subject to sections twenty-one, twenty-four, twenty-five and twenty-six of this article.