S.C. Code Ann. § 1-23-300

This article does not apply to emergency regulations promulgated pursuant to Section 1-23-130 or regulations promulgated pursuant to Chapter 9 of Title 46 or Chapter 4 of Title 47 or to proposed regulations by an agency to implement a statute or ordinance that does not require an agency to interpret or describe the requirements of the statute or ordinance, such as state legislative or federally mandated provisions that do not allow discretion to consider less restrictive alternatives or to a federal regulation that has gone through the federal regulatory flexibility act, if the federal review process is the same as or is stricter than the requirements of these sections.