S.C. Code Ann. § 1-23-110
(A) Before the promulgation, amendment, or repeal of a regulation, an agency shall:
(1) give notice of a drafting period by publication of a notice in the State Register. The notice must include:
(3) give notice of a public hearing at which the agency will receive data, views, or arguments, orally and in writing, from interested persons on proposed regulations by publication of a notice in the State Register if requested by twenty-five persons, by a governmental subdivision or agency, or by an association having not less than twenty-five members. The notice must include: