(1) Within thirty days of receipt of the award, unless another period of time has been agreed upon by the parties:

(a) A party, with notice to the other party, may request the arbitral tribunal to correct in the award any errors in computation, any clerical or typographical errors, or any errors of similar nature;

(b) If so agreed by the parties, a party, with notice to the other party, may request the arbitral tribunal to give an interpretation of a specific point or part of the award; and

(c) If the arbitral tribunal considers the request to be justified, it shall make the correction or give the interpretation within thirty days of receipt of the request. The interpretation shall form part of the award.

(2) The arbitral tribunal may correct any error of the type referred to in subsection (1)(a) of this section on its own initiative within thirty days of the date of the award.

(3) Unless otherwise agreed by the parties, a party, with notice to the other party, may request, within thirty days of receipt of the award, the arbitral tribunal to make an additional award as to claims presented in the arbitral proceedings but omitted from the award. If the arbitral tribunal considers the request to be justified, it shall make the additional award within sixty days.

(4) The arbitral tribunal may extend, if necessary, the period of time within which it shall make a correction, interpretation, or an additional award under subsection (1) or (3) of this section.

(5) The provisions of RCW 7.05.420 shall apply to a correction or interpretation of the award or to an additional award.