California Code, Public Utilities Code - PUC § 98141

The general manager may be removed by the board upon the adoption of a resolution by the affirmative vote of not less than a majority of the board.  The board may not reduce the salary of the general manager below the amount fixed at the time of his original appointment except upon the adoption of a resolution by a like vote.  The action of the board in suspending or removing the general manager or reducing his salary, if approved by a majority of the membership of the board, is final.