The director is the instrumentality of this state for the purpose of administering and enforcing the provisions of this chapter and to execute the legislative intent which is expressed in this chapter, and is hereby vested with the administrative authority which is described in this chapter. Notwithstanding other laws to the contrary, in the event a milk marketing order under the jurisdiction of the United States Department of Agriculture or other appropriate federal agency, is created by referendum or under the applicable laws and procedures relating thereto, in this state or in any geographical area within this state, the provisions of this chapter or any part thereof which is in conflict with such federal order, or which is unnecessary or is a duplication thereof, shall be suspended in the geographical area covered by and during the existence of such federal order. The director shall take such steps and procedures as are necessary to wind up and conclude the administration and enforcement of the provisions of this chapter, or any part thereof, prior to the suspension date.