California Code, Government Code - GOV § 11455.10

(a) Disobedience of or resistance to a lawful order.

(b) Refusal to take the oath or affirmation as a witness or thereafter refusal to be examined.

(c) Obstruction or interruption of the due course of the proceeding during a hearing or near the place of the hearing by any of the following:

(d) Violation of the prohibition of ex parte communications under Article 7 (commencing with Section 11430.10).

(e) Failure or refusal, without substantial justification, to comply with a deposition order, discovery request, subpoena, or other order of the presiding officer, or moving, without substantial justification, to compel discovery.