Cal. Gov't Code § 67784

(a) Before taking a board action pursuant to subdivision (b), a participating county transportation entity or county board of supervisors shall seek to address the issue that is the subject of a prospective petition directly with the subject operator, including by providing the operator with an opportunity to directly address the issue.
(b) Before submitting a petition to an ad hoc adjudication committee, the governing board of a participating county transportation entity or the county board of supervisors shall take formal board action to approve the petition.
(c) At any time before the commission is directed to take final action to withhold funding pursuant to Section 67788, a participating county transportation entity or county board of supervisors may withdraw its petition with a formal board action, or decision of the chair of, the applicable participating county transportation entity or county board of supervisors.