Objections shall be filed not later than:
12 days from the date of filing of a 30-day notice;
15 days from the date of filing of a 60-day notice; or
20 days from the date of filing of a 90-day notice.
The Department may accept late-filed objections, upon motion, for good cause shown.
Whenever a notice has been filed earlier than required under § 323.5, the Department may extend the time for filing an objection to that notice.