5-4(N)(1) The subdivider shall install and construct all improvements required by this Subsection 14-16-5-4(N), Subsection 14-16-1-7(B)(2), and the DPM. Required improvements shall be installed and constructed as shown on the approved preliminary plat and/or as specified in an Infrastructure Improvements Agreement (IIA) between the subdivider and the City. The City may accept commitments to provide improvements or services by the County and/or by franchised and/or private utility systems where the City Engineer determines that acceptance of such commitments will result in timely provisions of required improvements or services needed to serve the subdivision imposing burdens on surrounding properties or the city as a whole and will adequately protect the public health, safety, and welfare.