Sec. 5. In addition to the approval required from the agencies listed under IC 36-1-12-10, all final plans and specifications for the construction of a county jail are subject to review by the department. Before construction may begin on a county jail:
(1) the board of county commissioners shall submit the plans and specifications to the department; and
(2) except as provided in IC 36-1-8-19(b), the county executive must prepare the feasibility study and hold the public hearing required by IC 36-1-8-19.