If the district board proposes to change the boundaries of the territory proposed to be annexed by adding territory thereto, it shall give notice thereof in the manner provided in Section 6550.19. Owners of land within the affected territory shall be given an opportunity to appear before the district board pursuant to Section 6550.20 and to register any protests.
Source:
Section 6550.22, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=6550.22..