(1) If the department determines after its investigation that there is reasonable cause to believe that the prevailing wage law has been violated, the department shall notify the violator of its determination. The notice of violation shall be served on the violator personally or by certified mail.

(2) The notice of violation shall:

(a) Describe concisely the violation;

(b) Specify which statute or statutes were violated;

(c) If known, identify the laborers, workers, and mechanics who are affected by the violation;

(d) If known, state the amount of unpaid prevailing wages the violator owes;

(e) State that an employee cannot by contract or agreement waive the right to receive the prevailing wage;

(f) State the penalty that the department will assess for a violation, if any, of RCW 39.12.065 and 39.12.050; and

(g) State the date the complaint was filed with the department.

(3) RCW 39.12.065 and 39.12.050 establish the penalty amounts.

(4) If the notice alleges a violation of RCW 39.12.065, the department shall serve a copy of the notice of violation on the violator's sureties under chapters 39.08, 18.27, 19.28, and 60.28 RCW.

(5) The notice of violation shall inform the violator and, if a violation of RCW 39.12.065 is alleged, its sureties that they may request a hearing on the violations, the amount of unpaid prevailing wages owed, or the penalties assessed. The notice shall specify that if no hearing is requested within thirty days of the date of issuance of the notice the director shall issue a final, unappealable order finding that the violation did occur, ordering the violator to pay any unpaid prevailing wages, and assessing penalties.