Cal. Bus. & Prof. Code § 22780

(a) A commercial mail receiving agency shall not accept a Postal Service Form 1583 until positive identification has been established for the person filing the form. For purposes of this section, positive identification means any one of the following:
1. (1) Driver’s license.
2. (2) State identification card.
3. (3) Armed forces identification card.
4. (4) Employment identification card which contains the bearer’s signature and photograph.
5. (5) Any similar documentation which provides the agency with reasonable assurance of the identity of the filer.
(b) A commercial mail receiving agency shall maintain a copy of any Postal Service Form 1583 filed with the United States Postal Service. Upon the request of any law enforcement agency conducting an investigation, the commercial mail receiving agency shall make available to that law enforcement agency for purposes of that investigation and copying, its copy of the Postal Service Form 1583.
(c) A violation of this chapter is an infraction punishable by a fine of not less than one hundred dollars ($100) for the first offense, and a fine of not less than five hundred dollars ($500) for each subsequent offense.