California Code, Welfare and Institutions Code - WIC § 626.8

(b)(1) Except as otherwise provided in paragraph (2), Article 22 (commencing with Section 825) shall apply to any electronic recording or other record made pursuant to this section.

(2) The interrogating entity shall maintain an original or exact copy of any electronic recording made of a custodial interrogation until the person is no longer subject to the jurisdiction of the juvenile court, unless the person is transferred to a court of criminal jurisdiction. If the person is transferred to a court of criminal jurisdiction, subdivision (f) of Section 859.5 of the Penal Code shall apply. The interrogating entity may make one or more true, accurate, and complete copies of the electronic recording in a different format.