Section 37-1-8501-06010-300A. Requests for urban boundary revisions may be submitted to PLD by responsible local officials or be initiated by PLD. All requests to PLD for urban boundary revisions (and related changes in functional classifications at the proposed boundary relocation) must include adequate maps showing existing population density or other urban criteria. All requests must be accompanied by supporting documentation and must have the approval of the chief elected official of each incorporated municipality affected by the proposed revision and the County Board of Supervisors. In urbanized areas all requests must be submitted through the MPO.37 Miss. Code. R. § 1-8501-06010-300