(1) The board must operate on a full-time basis. Each member of the board must devote his or her full time and efforts to the efficient discharge of the duties of the board.
(2) Board members must receive an annual salary in the same range as that established for equivalent members of class four boards under RCW 43.03.250.
(3) Each board member must receive reimbursement for travel expenses incurred in the discharge of his or her duties in accordance with RCW 43.03.050 and 43.03.060 as now existing or hereafter amended.