California Code, Welfare and Institutions Code - WIC § 4545

The state council may periodically review the number and geographic boundaries of regional offices needed to effectively implement this division, by methods including, but not limited to, conducting public hearings in affected regions and seeking input from regional advisory committees, persons with developmental disabilities, family members, service providers, advocates, and other interested parties.  Public notice shall be provided at least 120 days before any changes in the number of or boundaries of regional offices.