(a) If, as a result of investigation, the Commissioner has good cause to believe that any person is violating any provision of this act, the Commissioner shall send notice of the violation by certified mail to the person believed to be in violation. The notice shall state the time and place for hearing which shall not be less than thirty days from the date of such notice.

(b) At the time and place fixed for the hearing in the notice, the person shall have an opportunity to be heard and to show cause why an order should not be made by the commissioner to cease and desist from acts constituting a violation of this act and why administrative penalties should not be assessed.

(c) Upon good cause shown, the Commissioner shall permit any person to intervene, appear and be heard at the hearing, either in person or by counsel.

(d) The Commissioner may administer oaths, examine and cross-examine witnesses, receive oral and documentary evidence and subpoena witnesses, compel their attendance and require the production of books, papers, records or other documents which he deems relevant to the hearing. The Commissioner shall cause a record of all evidence and all proceedings at the hearing to be kept.

(e) Following the hearing, the Commissioner shall issue a written order resolving the factual issues presented at the hearing and stating what remedial action, if any, is required of the person charged. The Commissioner shall send a copy of the order to those persons participating in the hearing.