The Department of Human Resources, or county boards of health acting as agents of the department, shall have the power and authority to issue permits to operate food service establishments and to suspend or revoke such permits in accordance with the rules and regulations adopted and promulgated as provided for in this article. When, in the judgment of the department or the county board of health, acting as agent of the former, it is necessary and proper that such application for a permit be denied or that the permit previously granted be suspended or revoked, the applicant or holder thereof shall be afforded notice and hearing as provided in Article 1 of Chapter 5 of Title 31. In the event that such application is finally denied, suspended, or revoked, the applicant or holder of the permit shall be notified in writing. Such written notice shall specifically state any and all reasons why the application has been denied or the permit has been suspended or revoked.