Cal. Gov. Code § 62255

Every five years, beginning in the calendar year in which the authority has allocated a cumulative total of more than one million dollars ($1,000,000) in property tax increment revenues pursuant to subdivision (a) of Section 62253 or other revenues pursuant to subdivision (b) of Section 62253, including any proceeds of a debt issuance, the authority shall contract for an independent audit conducted in accordance with generally accepted governmental auditing standards.