(1) The Department of Environmental Quality shall review and cause to be investigated all hazardous waste treatment site permit applications submitted to it.
(2) After reviewing and investigating the application, the department shall decide whether or not to issue the permit. It shall cause notice of its decision to be given to the applicant by certified mail at the address designated in the application. The decision of the department is subject to review by the Environmental Quality Commission under the provisions of ORS chapter 183 governing contested cases.