California Code, Public Resources Code - PRC § 80201

(a) The requirement to pay prevailing wages pursuant to this division may be enforced by the Labor Commissioner through the issuance of a civil wage and penalty assessment pursuant to Section 1741 of the Labor Code, which may be reviewed pursuant to Section 1742 of the Labor Code, within 18 months after the completion of the project, by an underpaid worker through an administrative complaint or civil action, or by a joint labor-management committee through a civil action under Section 1771.2 of the Labor Code.

(b) If a civil wage and penalty assessment is issued, the contractor, subcontractor, and surety on a bond issued to secure the payment of wages covered by the assessment shall be liable for liquidated damages pursuant to Section 1742.1 of the Labor Code.