Cal. Pen. Code § 3411
The Department of Corrections shall on or before January 1, 1980, establish and implement a community treatment program under which women inmates sentenced to state prison pursuant to Section 1168 or 1170 who have one or more children under the age of six years, whether born prior to or after January 1, 1976, shall be eligible to participate within the provisions of this section. The community treatment program shall provide for the release of the mother and child or children to a public or private facility in the community suitable to the needs of the mother and child or children, and which will provide the best possible care for the mother and child. In establishing and operating such program, the department shall have as a prime concern the establishment of a safe and wholesome environment for the participating children.
Ca. Pen. Code § 3411