California Code, Health and Safety Code - HSC § 115125

Any person who, on the effective date of an agreement under Section 115120, possesses a license issued by the federal government shall be deemed to possess the same pursuant to a license issued under this chapter.  The license shall expire either 90 days after receipt from the department of a notice of expiration of the license, or on the date of expiration specified in the federal license, whichever is the earlier.