California Code, Probate Code - PROB § 404

(a) The Controller shall establish and may amend standards of training, performance, and ethics of probate referees. The standards are a public record.

(b) The Controller may revoke the appointment of a person to act as a probate referee for noncompliance with any standard of training, performance, or ethics established under subdivision (a). The Controller may revoke an appointment under this subdivision without notice or a hearing, but the revocation is subject to review by writ of mandate in a court of competent jurisdiction.