A person who has been issued a permit by the Department may petition for an amendment to the permit. If the amendment reduces the size of the permitted structure, or the permitted activity, and results in less intrusive impact on the navigable waters and lands of the State, the Department may grant the amendment without requiring additional agency and public notice and comment. Any request for an amendment which enlarges the proposed structure or activity or, in the opinion of the Department, may produce a greater impact on the navigable waters and lands of the State shall be given new public and agency notice and comment under Reg. 450.5 through 450.11.
S.C. Code Regs. 19-450.13