Cal. Food & Agric. Code § 15317

If the director has reason to believe that any of the conditions stated in Section 15315 are applicable to any registered device and that the use or continued use of the device constitutes an immediate substantial danger to human health or safety, property, or the environment, the director, after notice to the registrant, may suspend the registration of that device pending a hearing and final decision. If the director does not file an accusation pursuant to Chapter 5 (commencing with Section 11500) of Part 1 of Division 3 of Title 2 of the Government Code within 30 days from the date of the suspension, the suspension shall be terminated.