S.C. Code Ann. § 39-41-220: Inspection of alcohol sold as motor fuel or sold for purpose of producing motor fuel.

Ethyl, methyl, and any other alcohol sold or offered for sale as motor fuel or to be blended with gasoline for the purpose of producing motor fuel are subject to inspection, sampling, and testing by the Department of Agriculture. Gasohol is defined as a blend of gasoline and at least ten percent ethyl alcohol. The department may limit the total oxygenates in the motor fuel blends consistent with industry practices and acceptable consumer motoring performance.