(a) Within 30 days after service upon the alleged violator of a notice of proposed order of compliance, the alleged violator may—

(1) File a reply in writing with the official who issued the notice; or

(2) Request a hearing in accordance with subpart D of this part.

(b) If a reply is filed, as to any charges not dismissed or not subject to a consent order of compliance, the alleged violator may, within 10 days after receipt of notice that the remaining charges are not dismissed, request a hearing in accordance with subpart D of this part.

(c) Failure of the alleged violator to file a reply or request a hearing within the period provided in paragraph (a) or (b) of this section—

(1) Constitutes a waiver of the right to a hearing and the right to an appeal, and

(2) Authorizes the official who issued the notice to find the facts to be as alleged in the notice and to issue an appropriate order directing compliance, without further notice or proceedings.