Cal. Sts. & High. Code § 36530

The city council shall appoint an advisory board which shall make a recommendation to the city council on the expenditure of revenues derived from the levy of assessments pursuant to this part, on the classification of businesses, as applicable, and on the method and basis of levying the assessments. The city council may designate existing advisory boards or commissions to serve as the advisory board for the area or may create a new advisory board for that purpose. The city council may limit membership of the advisory board to persons paying the assessments under this part. The city council may appoint the advisory board prior to adoption of the resolution of intention to create the area, so that the advisory board may recommend the provisions of the resolution of intention.