40 CFR §179.42

1. (a)OCSPP shall be a party to a hearing under this part. Any other person may participate as a party in such a hearing to the extent specified by this section.
2. (b)A person desiring to participate in a hearing must file with the hearing clerk within 30 days after publication of the Notice of Hearing under § 179.20, a Notice of Participation in the following form:
3. (c)An amendment to a Notice of Participation must be filed with the hearing clerk and served on all parties.
4. (d)No person may participate in a hearing who has not filed a written Notice of Participation or whose participation has been stricken under paragraph (f) of this section.
5. (e)The presiding officer may permit the late filing of a Notice of Participation upon a showing of good cause. Arrangements and agreements previously made in the proceeding shall apply to any party admitted late.
6. (f)The presiding officer may strike the participation of a person for failure to comply with any requirement of this subpart. Any person whose participation is striken may obtain interlocutory review thereof by the Administrator.