The notice shall be served by posting at least one copy in a conspicuous place on the premises described in the permit, and by sending another copy by registered mail, postage prepaid, return receipt requested, to the person to whom the permit was issued at the address therein given.
Source:
Section 18870.13, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=18870.13..