(a) Upon timely receipt of a request for a hearing under Sec. 4.12
of part 4 or Sec. 5.12 of part 5 of this title, where the Administrator
has determined that relevant facts are in dispute, or on his/her own
motion, the Administrator shall refer the case to the Chief
Administrative Law Judge by Order of Reference, to which shall be
attached a copy of any findings of the Administrator and response
thereto, for designation of an Administrative Law Judge to conduct such
hearings as may be necessary to decide the disputed matters. A copy of
the Order of Reference and attachments thereto shall be served upon the
person or firm requesting the hearing, if any and upon the respondents.
(b) The findings of the Administrator and response thereto shall be
given the effect of a complaint and answer, respectively, for purposes
of the administrative preceedings.