S.C. Code Ann. § 4-3-235
(A)
(1) The following described portion of Charleston County is transferred and annexed to Dorchester County:
All that area, approximately 30.12 acres, now lying in the County of Charleston and identified as TMS #379-00-00-064 and is Tract 6, a portion of Gahagan Plantation, and shown on a map prepared by Cornerstone Surveying & Engineering, Incorporated, designated as project #04069 and dated October 1, 1993.