1.  Immediate suspension.  If the commissioner has probable cause to believe that a person permitted under this section poses an immediate threat to the public because of gross negligence in the performance of duties associated with the permit, the commissioner shall immediately suspend that person's permit.  

2.  Duration of suspension.  The suspension remains in effect for 30 days unless a revocation procedure under section 2474 is commenced within 30 days, in which case the suspension continues until the revocation proceeding is complete.