Upon receipt of an application, the department shall publish in the State Register notice of receipt of the application. The department shall review the application in accordance with the standards set forth in § 44-7-560 and if requested by an affected person within thirty days of the department’s receipt of a completed application, may hold a public hearing in accordance with regulations promulgated by the department. Within thirty days of receipt of the application, the department may request additional information as may be necessary to complete the application. The applicant has thirty days from the date of the request to submit the additional information. If the applicant fails to submit the requested information within the thirty-day period, the application is considered withdrawn. However, the department may grant one fifteen-day extension for the applicant to submit this information. The department shall grant or deny the application within sixty days after receipt of a completed application or from the date of the public hearing, if one is requested, and that decision must be in writing and must set forth the basis for the decision. The department shall furnish a copy of the decision to the applicants and any affected persons who have asked to be notified. The department shall publish its decisions in the State Register.