Public Resources Code § 5185

Two members of the board constitute a quorum for the transaction of business; and the concurrent action of two members is sufficient to enable the board to:

(a) Make any contracts pertaining to the park or parks under the control of the board.

(b) Draw and expend any money which has been appropriated or set apart for the support of the park or parks, or which constitutes any portion of the funds applicable to their support.