Any person who has exhausted all administrative remedies available within the department and who is aggrieved by a final decision in a contested case is entitled to judicial review in accordance with the provisions of the administrative procedure act, chapter 52, title 67, Idaho Code. The review may be obtained by filing in the district court within thirty (30) days’ notice of the action of the director, a written petition praying that such action be set aside. A copy of such petition shall forthwith be delivered to the director, and within thirty (30) days thereafter the director shall certify and file in the district court of the area affected a transcript of any record pertaining thereto, including a transcript of evidence received at any hearing of referendum. The district court shall give notice, by United States mail, to the director of the department of agriculture, and to the petitioner or petitioners, of the time and place at which the court will hear such petition, at which time any interested party may be heard. Upon completion of the hearing the court shall affirm, set aside or modify the action of the director, except that the findings of the director as to the facts, if supported by substantial evidence, shall be conclusive.