Cal. Health & Safety Code § 25404.3
(b) In determining whether an applicant agency should be certified, or designated as certified, the secretary, after receiving comments from the director, the Director of Emergency Services, the State Fire Marshal, and the Executive Officers and Chairpersons of the State Water Resources Control Board and the California regional water quality control boards, shall consider at least all of the following factors:
(c)
(2) The secretary shall not certify an agency to be a certified unified program agency unless the secretary finds both of the following:
(d)
(1) The secretary shall not certify an applicant agency that proposes to allow participating agencies to implement certain elements of the unified program unless the secretary makes all of the following findings:
(f)
(2)
(B) The secretary shall determine the method by which the unified program shall be implemented throughout the county and may select any combination of the following implementation methods:
(g)