47 Ill. Adm. Code 395.302
Computation of Time
Section 395.302 Computation of
Time
All petitions, evidence, motions
and other written correspondence sent by United States mail to the Board shall
be considered filed with the Board as of the postmark date in accordance with
the Illinois Statute on Statutes [5 ILCS 70/1.25]. Petitions, evidence,
motions and all other written correspondence sent to the Board by a delivery
service other than the United States mail shall be considered as filed with the
Board on the date sent as indicated on the tracking label.