Cal. Health & Saf. Code § 12604
Following the revocation or voluntary surrender of a license, or failure to renew his license, any person in lawful possession of lawfully acquired fireworks for which a license is required may sell or otherwise dispose of such fireworks only under supervision of the State Fire Marshal and in such a manner as he shall provide by regulations and solely to persons who are authorized to buy, possess, sell, or use such fireworks. Such disposal shall be accomplished not later than 90 days from the legal revocation, voluntary surrender, or day that the license expires. Any person possessing fireworks pursuant to this section shall report the disposition of such fireworks to the local authority who issued the storage permit within the time period specified by this section.
Ca. Health and Saf. Code § 12604