49 CFR 209.203: Notice of investigation.

(a) FRA begins a compliance order proceeding by serving a notice of investigation on the respondent.

(b) The notice of investigation contains:

(1) A statement of the legal authority for the proceeding;

(2) A statement of the factual allegations upon which the remedial action is being sought; and

(3) A statement of the remedial action being sought in the form of a proposed compliance order.

(c) The FRA may amend the notice of investigation at any time prior to the entry of a final compliance order. If an amendment includes any new material allegation of fact or seeks new or additional remedial action, the respondent is given an opportunity to respond.