The licensee may use a sealed source in a well without a surface casing for protecting fresh water aquifers only if the licensee follows a procedure for reducing the probability of the source becoming lodged in the well. The procedure must be approved by the Department pursuant to RHA 8.4.3, the U.S. Nuclear Regulatory Commission, any Agreement State or a Licensing State.
S.C. Code Regs. § 61-63.VIII.RHA 8.18