Cal. Public Resources Code § 5506.5

(a) If the exterior boundaries of a proposed district are coterminous with the exterior boundaries of the County of Marin or the County of Sonoma, proceedings for formation of that district may, in lieu of a petition, be initiated by resolution of the board of supervisors of the county. (b) The resolution may specify that the board of supervisors shall act, ex officio, as the governing body for a district formed in Marin County. For a district formed in Sonoma County, the board of supervisors shall act, ex officio, as the governing body of the district. In those cases, the provisions of this article pertaining to the election of district directors shall not apply and all powers and authority of the district shall be vested in the board of supervisors of the county in its capacity as the governing body of the district. (c) The resolution adopted by the Board of Supervisors of the County of Sonoma shall do all of the following: (1) Name the district, and state the reasons for forming it. (2) Describe the methods by which the district will be financed. (3) Call, and give notice of, an election to be held in the proposed district for the purpose of determining whether the district shall be created and established. The formation of the district is not subject to the Cortese-Knox-Hertzberg Local Government Reorganization Act of 2000 (Division 3 (commencing with Section 56000) of Title 5 of the Government Code). (4) Include any other matters necessary to the formation of the district.