Georgia Code Title 50. State Government § 50-2-27

(a) The consent of this state is given to the retrocession of jurisdiction, either partially or wholly, by the United States over land owned by the United States within the boundaries of this state; and the Governor is authorized to accept for the state such retrocession of jurisdiction.

(b) Retrocession of jurisdiction shall be effected upon written notice by the principal officer of the agency of the United States having supervision and control over the land to the Governor, such notice describing the land by metes and bounds and specifying the nature of the jurisdiction therein to be retroceded to the state and the entry of acceptance upon the written notice by the Governor.