Cal. Insurance Code § 929.3

(a) Failure to submit a report pursuant to Section 929 shall subject an admitted insurer to a civil penalty to be fixed by the commissioner, not to exceed five thousand dollars ($5,000) or, if the act was willful, a civil penalty not to exceed ten thousand dollars ($10,000). (b) An insurer may request, and the commissioner may grant, a 30-day extension, if needed due to unintended or unforeseen delays, to submit the report. If the insurer fails to submit the report within 30 days of a written notice by the commissioner regarding the failure to submit the report, the commissioner may find that the failure to submit the report was willful and increase the civil penalty to an amount not to exceed ten thousand dollars ($10,000). (c) The penalty imposed by this section shall be enforced by the commissioner and may be appealed by means of a remedy provided by Section 12940, or by Chapter 5 (commencing with Section 11500) of Part 1 of Division 3 of Title 2 of the Government Code. This subdivision is the sole means for enforcement of this section.