S.C. Code Ann. § 1-25-40

The site or sites of the project shall be established at a location chosen by the State Reorganization Commission, in consultation with the state agencies impacted by the project and city, county and other officials of the areas proposed for site location and any other persons, agencies or bodies the commission deems necessary and helpful in the determination of a site or sites. Provided, however, the commission shall confine its site choices to no more than two sites, covering in their totality no more than four counties. In the event that multiple sites are chosen, the commission shall designate one urban site and one rural site.