5 ILCS 615/13
Upon the expiration or forfeiture of any permit no new permit covering the lands, or any of them, embraced by such expired or forfeited permit shall be issued for a period of thirty (30) days following the date of such expiration or forfeiture. If more than one application for a permit covering such lands, or any of them, shall be made during such thirty-day period, the Department shall issue a permit to such lands, or any of them, to the person offering the greatest cash bonus for such permit at a public auction to be held at the time and place and in the manner as the Department shall by regulation prescribe. Such auction shall be held at any time after the expiration of such thirty-day period and the only notice thereof shall be by entering in a book kept at the office of the Department for the purpose, which book shall be a public record, the date, place and hour of the holding of such auction.
5 ILCS 615/13