(1) The manufacturer has the burden of proof to establish that good cause exists for permitting the proposed establishment or relocation.

(2) The administrative law judge shall conduct any hearing as provided in RCW 46.96.050(2), and all hearing costs shall be borne as provided in that subsection. The administrative law judge shall render the final decision as expeditiously as possible, but in any event not later than one hundred twenty days after a protest is filed. If more than one protest is filed, the one hundred twenty days commences to run from the date the last protest is filed. A party to such a hearing aggrieved by the final order of the administrative law judge may appeal as provided and allowed in RCW 46.96.050(3).