If any provision of this chapter or the application of any provision of this chapter in any circumstance or to any person, city, county, special district, school district, the state, or any agency or subdivision of the state, including the California State University and the University of California, is held invalid, that invalidity shall not affect other provisions or applications of this chapter that can be given effect without the invalid provision or application of the invalid provision, and to this end the provisions of this chapter are
severable.