California Code, Health and Safety Code - HSC § 41651

In addition to any other statutory requirements, at the public hearing held pursuant to Section 41650, the districts included, in whole or in part, within the nonattainment area, the designated air quality planning agency, and members of the public shall have the opportunity to present oral and written evidence.

In addition, the districts and the agency shall have the right to question and solicit testimony of qualified representatives of the state board staff on the matter being considered. The state board may, by an affirmative vote of four members, place reasonable limits on the right to question and solicit testimony of qualified representatives of the state board staff.