S.C. Code Regs. § 61-79.124.A.13
All persons, including applicants, who believe the issuance of a permit under these regulations or any condition of a draft permit is inappropriate or that the Department's tentative decision to deny an application, terminate a permit, or prepare a draft permit is inappropriate, must notify the Department in writing. This notification must contain all reasonably ascertainable issues, and submit all reasonably available arguments supporting their position by the close of the public comment period (including any public hearing) under 124.10., and factual grounds supporting their position, including any supporting materials which are not already part of the administrative record for the permit. This written notification must be submitted to the Department by the close of the public comment period provided under 124.10 (edited 12/92).
S.C. Code Regs. 61-79.124.A.13