(1) The hearing officer will promptly issue any subpoena requiring the attendance and testimony of witnesses at a deposition only if the subpoena complies with § 1081.209 and if:
- (i) The proposed deponent is a witness identified in the other party's scheduling conference disclosure under § 1081.203(b);
- (ii) The proposed deponent was a witness of or participant in any event, transaction, occurrence, act, or omission that forms the basis for any claim asserted by the Office of Enforcement, any defense, or anything else required to be included in an answer pursuant to § 1081.201(b), by any respondent in the proceeding (this excludes a proposed deponent whose only knowledge of these matters arises from the Bureau's investigation, the Bureau's examination, or the proceeding);
- (iii) The proposed deponent is designated as an “expert witness” under § 1081.210(b); provided, however, that the deposition of an expert who is required to submit a written report under § 1081.210(b) may only occur after such report is served;
- (iv) The proposed deponent has custody of documents or electronic data relevant to the claims or defenses of any party (this excludes officers or personnel of the Bureau who have custody of documents or data that was produced by the Office of Enforcement to the respondent); or
- (v) The proposed deponent is unavailable for the hearing as set forth in § 1081.209(c).