49 CFR § 605.31
Notification to the respondent
November 18, 2020
On receipt of any complaint under §605.30, or on his own motion if at any time he shall have reason to believe that a violation may have occurred, the Administrator will provide written notification to the grantee concerned (hereinafter called “the respondent”) that a violation has probably occurred. The Administrator will inform the respondent of the conduct which constitutes a probable violation of the agreement.