California Code, Welfare and Institutions Code - WIC § 11404

(1) For children removed after October 1, 1983, document that it provided preplacement preventive services to the child prior to the child's placement in foster care, and document why provisions of these services were not successful in maintaining the child in his or her home, unless it is documented that these services were not provided due to either of the following:

(2) Develop a written assessment of the reasons necessitating the child's placement in foster care and the treatment needs of the child while in foster care to be updated by the agency no less frequently than once every six months. Where the child is a parent who has a child living with him or her in the same eligible facility, the assessment shall also address the needs of his or her child.

(3) Develop a case plan for the child within a maximum of 60 days of placement.

(4) Ensure that services are provided to return the child to his or her own home or establish an alternative permanent placement for the child if returning home is not possible or is inappropriate.