Cal. Welf. and Inst. Code § 779.5
The court committing a ward to a secure youth treatment facility as provided in Section 875 may thereafter modify or set aside the order of commitment upon the written application of the ward or the probation department and upon a showing of good cause that the county or the commitment facility has failed, or is unable to, provide the ward with treatment, programming, and education that are consistent with the individual rehabilitation plan described in subdivision (d) of Section 875, that the conditions under which the ward is confined are harmful to the ward, or that the juvenile justice goals of rehabilitation and community safety are no longer served by continued confinement of the ward in a secure youth treatment facility. The court shall notice a hearing in which it shall hear any evidence from the ward, the probation department, and any behavioral health or other specialists having information relevant to consideration of the request to modify or set aside the order of commitment. The court shall, at the conclusion of the hearing, make its findings on the record, including findings as to the custodial and supervision status of the ward, based on the evidence presented.
Ca. Welf. and Inst. Code § 779.5