(

a) In a proceeding, hearing, or in the discharge of duties imposed under this chapter, the board, its executive director, or an administrative law judge designated by the board may administer oaths, take depositions, certify to official acts, and issue subpoenas to compel attendance of witnesses and the production of books, records, papers, and other documents in any part of the state. (

b) For purposes of discovery, the board or its executive director may, if deemed appropriate and proper under the circumstances, authorize the parties to engage in the civil action discovery procedures in Title 4 (commencing with

Section 2016.010) of Part of the Code of Civil Procedure, excepting the provisions of

Chapter 13 (commencing with

Section 2030.010) of that title. Discovery shall be completed no later than days prior to the commencement of the proceeding or hearing before the board. This subdivision shall apply only to those proceedings or hearings involving a petition filed pursuant to subdivision (

b) of

Section or protest filed pursuant to subdivision (

c) or (

d) of

Section 3050. The board, its executive director, or an administrative law judge designated by the board may issue subpoenas to compel attendance at depositions of persons having knowledge of the acts, omissions, or events that are the basis for the proceedings, as well as the production of books, records, papers, and other documents. (

c) This

section shall remain in effect only until January 1, 2030, and as of that date is repealed.