209.213—Appeal.
(a)
Any party aggrieved by a presiding officer's decision may file an appeal with the Administrator. The appeal must be filed within twenty (20) days after service of the presiding officer's decision.
(b)
Prior to rendering a final determination on an appeal, the Administrator may remand the case for further proceedings before the hearing officer.
(c)
The filing of an appeal does not stay the effectiveness of a compliance order unless the Administrator expressly so provides.