Section 703.5 Of Chapter 1. Competency From California Evidence Code >> Division 6. >> Chapter 1.
703.5
. No person presiding at any judicial or quasi-judicial
proceeding, and no arbitrator or mediator, shall be competent to
testify, in any subsequent civil proceeding, as to any statement,
conduct, decision, or ruling, occurring at or in conjunction with the
prior proceeding, except as to a statement or conduct that could (a)
give rise to civil or criminal contempt, (b) constitute a crime, (c)
be the subject of investigation by the State Bar or Commission on
Judicial Performance, or (d) give rise to disqualification
proceedings under paragraph (1) or (6) of subdivision (a) of Section
170.1 of the Code of Civil Procedure. However, this section does not
apply to a mediator with regard to any mediation under Chapter 11
(commencing with Section 3160) of Part 2 of Division 8 of the Family
Code.