43 CFR §4.1112

1. (a)Except for oral motions made in proceedings on the record, or where the administrative law judge otherwise directs, each motion shall—
   1. (1)Be in writing; and
   2. (2)Contain a concise statement of supporting grounds.
2. (b)Unless the administrative law judge or the Board orders otherwise, any party to a proceeding in which a motion is filed under paragraph (a) of this section shall have 15 days from service of the motion to file a statement in response.
3. (c)Failure to make a timely motion or to file a statement in response may be construed as a waiver of objection.
4. (d)An administrative law judge or the Board shall rule on all motions as expeditiously as possible.