40 CFR § 179.86
Time and place of preliminary conference
June 9, 2020
A preliminary conference will commence at the date, time, and place announced in the Notice of Hearing, or as otherwise specified by the Administrator or presiding officer in a subsequent notice. The preliminary conference may not commence until after expiration of the time for filing notices of participation under §179.42. The presiding officer may specify that two or more such conferences shall be held.