All orders, decisions, findings of fact, correspondence, motions, petitions, applications, and any other documents governed by Sections 12-562-1a through 12-562-19a, inclusive, of the Regulations of Connecticut State Agencies, shall be deemed to have been filed or received on the date on which they are received by the board or division at their principal office, except as hereinafter provided.
Conn. Agencies Regs. § 12-562-15a