In general. On timely, written request, a respondent is entitled to receive from the charging agency: a list of the names of witnesses intended to be called; and copies of documents intended to be submitted into evidence. To be timely, the request must be submitted to the Hearing Administrator at least fifteen (15) days before the scheduled hearing. The Hearing Administrator shall forward the request to the charging agency within forty-eight (48) hours of submission. Within seven (7) days after it receives the request from the Hearing Administrator, the charging agency shall serve a written response on the respondent, with a copy sent to the Hearing Administrator. Limitations. Pre-hearing discovery is limited to the matters enumerated in subsection (a) of this section. All other applications or motions for discovery, including depositions on oral examinations shall be made to the administrative hearing officer at the start of the hearing, and the administrative hearing officer may order further discovery, as appropriate. Supplementation. If a party has responded to a request for discovery, and before the hearing obtains further material information, the party shall supplement the response promptly. Sanctions. If any party fails to properly respond to a lawful discovery request or order or wrongfully refuses to answer questions or produce documents, an administrative hearing officer may take appropriate action, including, but not limited to, precluding evidence or witnesses of the offending party or striking the pleadings or defenses of that party.