The department is authorized in accordance with the provisions of this chapter and RCW 79.24.500 through 79.24.600 to provide for the acquisition of land and the construction of buildings, laboratories, and facilities on the east capitol site for the use of the commission and the department and to finance payment thereof by bonds payable out of special funds from the proceeds of state excise taxes on motor vehicle fuels, or by gifts, bequests, or grants or by such additional funds as the legislature may provide.