199—14.7 (17A,476) Electronic file. The official agency record in any proceeding is the electronic file maintained by the board's executive secretary and any paper filings accepted by the board which are not stored in electronic form. The board's executive secretary is responsible for maintaining an official electronic file in the board's electronic filing system for all documents filed electronically, receiving filings into the electronic filing system by electronic transmission, and scanning documents into the system that are not filed electronically, if feasible. The executive secretary may certify documents by digital signature and seal.