Except as otherwise provided in Section 65919.10, before the board of supervisors acts on a proposed action, the county shall refer the proposed action to each affected city, and before the city council acts on a proposed action, the city shall refer the proposed action to the county, in accordance with the procedure set forth in Sections 65919.4 and 65919.5.
Source:
Section 65919.3, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=65919.3..