Grand Jury Proceedings — California Penal Code — Formation Of Grand Jury — Impaneling Of Grand Jury — Challenge Date: 15 Sep 2016 TEXT PDF Current through the 2016 Legislative Session No challenge shall be made or allowed to the panel from which the grand jury is drawn, nor to an individual grand juror, except when made by the court for want of qualification, as prescribed in Section 909. Ca. Pen. Code § 910