(1) The director shall review the proposed decision in accordance with the Administrative Procedure Act, chapter 34.05 RCW and any objections, written arguments and briefs timely filed by the parties. The director may:

(a) Allow the parties to present oral arguments;

(b) Allow the parties to submit additional information if circumstances so warrant; or

(c) Remand the matter to the designee or administrative law judge for further proceedings.

(2) The director shall issue a final decision that adopts in whole or in part, modifies, or rejects the proposed decision. If the decision finds a violation and assesses monetary penalties, the decision shall include notice that payment must be made no later than forty-five days after service of the decision or the period to appeal has expired, whichever is later.

(3) The director shall cause service of the final decision on all parties. Any party to whom a violation is found, may file a petition for review of the final decision to superior court. If an appeal is not filed within the period set by RCW 34.05.542, the director's decision is conclusive and binding on all parties.