2005 California Government Code Sections 8605 Article 9. Operational Areas

8605.  Each county is designated as an operational area.  In a state
of war emergency each operational area shall serve as a link in the
system of communications and coordination between the state's
emergency operating centers and the operating centers of the
political subdivisions comprising the operational area.
   The governing bodies of each county and of the political
subdivisions in the county may organize and structure their
operational area.
   An operational area may be used by the county and the political
subdivisions comprising the operational area for the coordination of
emergency activities and to serve as a link in the communications
system during a state of emergency or a local emergency.