19 CFR §162.79a

If no prepenalty notice is issued, a written notice of any monetary penalty incurred shall contain the information required under § 162.76(b)(1), § 162.77(b)(1) or § 162.77a(b)(1) and (b)(2), except that the notice shall state the amount of the claim for a monetary penalty. The notice also shall inform the person of his right to apply for relief under section 618, Tariff Act of 1930, as amended (19 U.S.C. 1618), in accordance with part 171 of this chapter.