76-1-507. Resolution of conflicts over jurisdictional areas of several city-county planning boards. In case an unincorporated area is within the potential jurisdiction of more than one planning board, then the boundary between the conflicting areas shall be determined by agreement between the planning boards involved with the approval of their respective governing bodies. A map showing the boundary lines so agreed upon and approved shall be filed as provided in 76-1-506 and thereafter shall fix the limit of territorial jurisdiction of the respective planning boards.