S.C. Code Ann. § 44-96-290
(D) The department shall promulgate regulations for the permitting of solid waste management facilities which shall, at a minimum, address the following issues:
(E) No permit to construct a new solid waste management facility or to expand an existing solid waste management facility may be issued until a demonstration of need is approved by the department. Facilities which lawfully burn nonhazardous waste for energy recovery up to the normal rate of manufacturing production or which lawfully use or reuse the waste to make a product shall not be excluded from the demonstration of need requirement. No construction of new or expanded solid waste management facilities may be commenced until all permits required for construction have been issued. In determining if there is a need for new or expanded solid waste disposal sites, the department shall not consider solid waste generated in jurisdictions not subject to the provisions of a county or regional solid waste management plan pursuant to this chapter.
The department shall promulgate regulations to implement this section. These regulations must apply to all solid waste management facilities which have not obtained all permits required for construction. This subsection does not apply to inert or cellulosic solid waste facilities which are not commercial solid waste management facilities or to industrial facilities managing solid waste generated in the course of normal operations on property under the same ownership or control as the solid waste management facility if the industrial facility is not a commercial solid waste management facility.
(I) The department may amend or attach conditions to a permit when: