Cal. Rev. & Tax. Code § 60581

If any amount has been illegally determined either by the person filing the return or by the board, the board shall set forth that fact in its records and certify the amount determined to be in excess of the amount legally due and the person against whom the determination was made.

For any amount exceeding fifty thousand dollars ($50,000), the board’s proposed determination under this section shall be available as a public record for at least 10 days prior to the effective date of the determination.