S.C. Code Ann. § 44-56-110

The department may hold public hearings and compel the attendance of witnesses; conduct studies, investigations, and research with respect to the operation and maintenance of any hazardous waste treatment or disposal facilities or sites and issue, deny, revoke, suspend or modify permits under such conditions as it may prescribe for the operation of hazardous waste treatment or disposal facilities or sites; provided, however, that no permit shall be revoked without first providing an opportunity for a hearing.