CA Health & Safety Code Section 11834.21

Any person licensed under this chapter who operates or proposes to operate an alcoholism or drug abuse recovery or treatment facility, the department or other public agency authorized to license such a facility, or any public or private agency which uses or may use the services of the facility to place its clients, may invoke the provisions of this article. This section shall not be construed to prohibit any interested party from bringing suit to invoke the provisions of this article.