Any member of the board, any member of the board's staff, any person acting as a witness or consultant to the board, any witness testifying in a proceeding authorized under this article, and any person who lodges a complaint pursuant to this article shall be immune from liability in any civil action brought against him or her for acts occurring while acting in his or her capacity as board member, staff, consultant, or witness, respectively, if such individual was acting in good faith within the scope of his or her respective capacity, made a reasonable effort to obtain the facts of the matter as to which he or she acted, and acted in the reasonable belief that the action taken by him or her was warranted by the facts. Any person participating in good faith in lodging a complaint or participating in any investigative or administrative proceeding pursuant to this article shall be immune from any civil or criminal liability that may result from such participation.