After passing a stop order, the Commissioner promptly shall send to the applicant or registrant a notice that: states that the stop order has been passed; states the reasons for the stop order; and informs the applicant or registrant of the right to a hearing under this section. The applicant or registrant may submit to the Commissioner a written request for a hearing on the stop order. The Commissioner shall schedule a hearing within 15 business days after the Commissioner receives the request unless the applicant or registrant consents to a later date. The Commissioner may schedule a hearing even if the applicant or registrant does not request a hearing. If a hearing is not requested and is not scheduled by the Commissioner and therefore is not held, the stop order remains in effect until the Commissioner modifies or vacates it. If a hearing is held, after the hearing, the Commissioner may modify or vacate the stop order or extend it until the Commissioner makes a final determination. The Commissioner may modify or vacate a stop order if the Commissioner finds that: conditions have changed; or it is otherwise in the public interest to vacate or modify the stop order.