That immediately upon ratification of this compact by all 3 states, each state will appoint 2 members to a joint survey commission to survey and mark the boundaries defined in this compact by establishing and perpetuating monuments at the reference points on shore by means of which the control points of said boundaries are located. The expense of marking the lake Michigan boundary shall be borne jointly by the states of Michigan and Wisconsin; and the expense of marking the boundary line described in section 2 above shall be borne equally by the states of Minnesota, Michigan and Wisconsin. The expense of marking the lake Superior and Superior bay boundary between Minnesota and Wisconsin shall be borne jointly by the states of Minnesota and Wisconsin.