S.C. Code § 48-20-150
If at any time it appears to the department that the activities under the reclamation plan and other terms and conditions of the operating permit are failing to achieve the purposes and requirements of this chapter, it shall give the operator written notice of that fact, of its intention to modify the reclamation plan and other terms and conditions of the permit in a stated manner, and of the operator's right to a hearing on the proposed modification at a stated time and place. The date for the hearing may not be less than thirty nor more than sixty days after the date of the notice unless the department and the operator mutually agree on another date. Following the hearing, the department may modify the reclamation plan and other terms and conditions of the permit in the manner stated in the notice or in such other manner it considers appropriate in view of the evidence submitted at the hearing.
S.C. Code § 48-20-150