49 CFR § 31.5 - Review by the reviewing official.
(a) If, based on the report of the investigating official under § 31.4(b), the reviewing official determines that there is adequate evidence to believe that a person is liable under § 31.3 of this part, the reviewing official shall transmit to the Attorney General a written notice of the reviewing official's intention to issue a complaint under § 31.7.
(b) Such notice shall include -
(2) A statement specifying the evidence that supports the allegations of liability;
(6) A statement that there is a reasonable prospect of collecting an appropriate amount of penalties and assessments.