(1) Pursuant to 75-20-213 (2) , MCA, an applicant may change or add to an application. The applicant shall inform the department of the change or addition by certified mailing or personal service. The applicant shall describe the change in sufficient detail to allow the department to make the determination required by ARM 17.20.807 and shall supply the information in the form of substitute pages or insertions to the application as originally filed.