California Code, Welfare and Institutions Code - WIC § 1731.6

(a) In any county in which there is in effect a contract made pursuant to Section 1752.1, if a court has determined that a person comes within the provisions of Section 1731.5 and concludes that a proper disposition of the case requires such observation and diagnosis as can be made at a diagnostic and treatment center of the Division of Juvenile Justice, the court may continue the hearing and, until July 1, 2021, order that the person be placed temporarily in such a center for a period not to exceed 90 days, with the further provision in such order that the Director of the Division of Juvenile Justice report to the court its diagnosis and recommendations concerning the person within the 90-day period.

(b) The Director of the Division of Juvenile Justice shall, within the 90 days, cause the person to be observed and examined and shall forward to the court the diagnosis and recommendation concerning the person's future care, supervision, and treatment.

(c) The Division of Juvenile Justice shall accept that person if it believes that the person can be materially benefited by such diagnostic and treatment services and if the Director of the Division of Juvenile Justice certifies that staff and institutions are available.A person shall not be transported to any facility under the jurisdiction of the Division of Juvenile Justice until the director has notified the referring court of the place to which the person is to be transported and the time at which the person can be received.

(d) Notwithstanding subdivision (c), the Division of Juvenile Justice shall accept without cost to the county any persons remanded pursuant to Section 707.2.

(e) The sheriff of the county in which an order is made placing a person in a diagnostic and treatment center pursuant to this section, or any other peace officer designated by the court, shall execute the order placing the person in the center or returning them therefrom to the court. The expense of the sheriff or other peace officer incurred in executing that order is a charge upon the county in which the court is situated.