When a hearing in a contested case is closed, no further evidence may be received, except by order of the department or the administrative law judge reopening a closed contested case for the taking of further evidence upon application of a party showing to the department's or the administrative law judge's satisfaction that the evidence is newly discovered or was not available at the time of the hearing and that the evidence is necessary for a just disposition of the case.
Wis. Admin. Code Department of Natural Resources NR 2.16