Within a reasonable time after the conclusion of the hearing, and as expeditiously as possible, the administrative law judge shall render his recommended decision. All decisions shall become a part of the record and, if proposed findings and conclusions have been filed, shall show the administrative law judge's ruling upon each of such proposed findings and conclusions. Decisions shall consist of:
(a) A brief statement of the issues of fact involved in the proceeding;
(b) The administrative law judge's findings and conclusions, as well as the reasons or basis therefor with record references, upon all the material issues of fact, law, or discretion presented on the record (including, when appropriate, comment as to the credibility and demeanor of the witnesses); and
(c) The administrative law judge's recommended determination as to the revocation or denial at issue.