Cal. Bus. & Prof. Code § 23328

If a licensee neglects or refuses to make a report as required by Section 23327, the department shall make an estimate based upon any information in its possession, or that may come into its possession, of the amount of wine produced by the delinquent licensee for the periods with respect to which he failed to make a report and, upon the basis of the estimated amount, compute and assess the additional license fees payable by the delinquent licensee. An assessment may be made of the amount of license fees due for more than one period. The department shall give the delinquent licensee written notice of the estimated license fee.