S.C. Code § 3-7-10
The State, the agencies of the State, the governing bodies of the counties and municipalities are authorized to adopt resolutions or ordinances of assurances required by the Secretary of the Army or the Chief of Engineers for the fulfillment of the required items of local cooperation as expressed in the appropriate acts of Congress or congressional documents upon a determination by the State, State agencies, governing bodies of the counties or municipalities that a project will accrue to the general or special benefit of the governing authority, may contract or otherwise commit itself to the United States to provide the necessary interest in lands and all existing structures on the lands, to make contributions of money or property in lieu of providing disposal areas for dredge materials, to hold the United States safe and harmless from damages done or caused to be done or for any claim or demand whatsoever for such damages suffered by or done to any property on which work is being performed and to provide or satisfy any other items or conditions of local cooperation as required by the Secretary of the Army or in the congressional documents covering the particular project.
S.C. Code § 3-7-10