(a) All junior college districts whose boundaries have or may hereafter become established so that they include territory which prior to such establishment lay, and shall continue to lie, within the boundaries of another junior college district shall have the power to disannex such overlapped territory.
(b) Upon certification by the governing board of such a junior college district to the county board of school trustees of the county in which its college is located that such an overlapping condition exists, the county board may by resolution disannex the overlapped territory from the district, describing such territory by metes and bounds.