Cal. Welf. & Inst. Code § 16501.35
(a) County child welfare agencies and probation departments shall implement policies and procedures that require social workers and probation officers to do all of the following:
(b) County child welfare agencies and probation departments shall develop and implement specific protocols to expeditiously locate any child or nonminor dependent missing from foster care. At a minimum, these policies shall do all of the following:
(2) Require the social worker or probation officer to do all of the following:
(F) Provide notice immediately, but in no case later than 24 hours from receipt of information that the child or nonminor dependent is missing from foster care, to all of the following parties:
(c)