S.C. Code Ann. § 31-12-70
(A) An authority is a public body, corporate and politic, exercising public and essential governmental powers, including powers necessary or appropriate to carry out and effectuate the purposes and provisions of this chapter, including the following powers:
(13) within its area of operation, to make or have made all surveys, studies, and plans necessary to the carrying out of the purposes of this chapter and in connection with it to enter into or upon any land, building, or improvement on it and to make soundings, test borings, surveys, appraisals, and other preliminary studies and investigations necessary to carry out its powers and to contract or cooperate with persons or agencies, public or private, in the making and carrying out the surveys, appraisals, studies, and plans. An authority is specifically authorized to make:
(B) In carrying out a redevelopment project, an authority may:
(C) In developing its redevelopment plans, an authority must: