Cal. Welf. & Inst. Code § 309
(a) Upon delivery to the social worker of a child who has been taken into temporary custody under this article, the social worker shall immediately investigate the circumstances of the child and the facts surrounding the child’s being taken into custody and attempt to maintain the child with the child’s family through the provision of services. The social worker shall immediately release the child to the custody of the child’s parent, guardian, Indian custodian, or relative, regardless of the parent’s, guardian’s, Indian custodian’s, or relative’s immigration status, unless one or more of the following conditions exist:
(d)
(e)
(1) If the child is removed, the social worker shall conduct, within 30 days, an investigation in order to identify and locate all grandparents, parents of a sibling of the child, if the parent has legal custody of the sibling, adult siblings, other adult relatives of the child, as defined in paragraph (2) of subdivision (h) of Section 319, including any other adult relatives suggested by the parents, and, if it is known or there is reason to know the child is an Indian child, any extended family members, as defined in Section 224.1 and Section 1903 of the federal Indian Child Welfare Act of 1978 (25 U.S.C. Sec. 1901 et seq.). As used in this section, “sibling” means a person related to the identified child by blood, adoption, or affinity through a common legal or biological parent. The social worker shall provide to all adult relatives who are located, except when that relative’s history of family or domestic violence makes notification inappropriate, within 30 days of removal of the child, written notification and shall also, whenever appropriate, provide oral notification, in person or by telephone, of all the following information:
(3)
(A) The social worker shall use due diligence in investigating the names and locations of the relatives, as well as any parent and alleged parent, pursuant to paragraph (1), including, but not limited to, asking the child in an age-appropriate manner about any parent, alleged parent, and relatives important to the child, consistent with the child’s best interest, and obtaining information regarding the location of the child’s parents, alleged parents, and adult relatives. Each county welfare department shall do all of the following:
(iii) Beginning January 1, 2027, and annually thereafter, each county shall review publicly available data, including data from the California Child Welfare Indicators Project, comparing the statewide average rate of placing children with relatives and, in the case of Indian children, the statewide average rate of placing children according to the federal Indian Child Welfare Act of 1978 (25 U.S.C. Sec. 1901 et seq.) placement preferences, as described in subdivision (b) of Section 361.31, with the county’s average rate of placement, as follows: