S.C. Code § 58-27-255
2016 Act No. 138, Sections 2 and 4, provide as follows:
"SECTION 2. Nothing in this act affects any other provisions or requirements of law or regulation applicable to coal combustion residuals."
"SECTION 4. This act takes effect upon approval by the Governor and applies to the disposal of coal combustion residuals placed in a landfill on or after that date."