S.C. Code Ann. § 12-21-2805
(C) Within thirty days of the receipt of the notice from the person or persons with knowledge of the alleged violation, the department or division shall forward the notice of intent to file a request for a proceeding to the Office of the Attorney General who shall determine:
(3) that the Office of the Attorney General will not pursue the enforcement of the alleged violation.
Upon written certification of the Office of the Attorney General that these conditions have been met, the person or persons with knowledge of the alleged violation may proceed to commence a civil action for any violation of any of the provisions of this chapter.