(2) If such authority considers the proposed facilities and the time schedule for installation of such facilities adequate to remove or alleviate the dangerous conditions, it shall approve the proposal and certify its approval to the city.
(3) If the authority considers the proposed facilities or time schedule inadequate, it shall disapprove the proposal and certify its disapproval to the city including the particular matters causing the disapproval. The city council shall then submit an additional or revised proposal.
(4) In the event the authority upon review of the plans and other documents submitted under subsection (1) of this section determines that the danger to public health in the area proposed to be annexed cannot be removed or alleviated by sanitary, water or other facilities ordinarily provided by incorporated cities it shall terminate the proceedings upon the proposal and notify the city. [1975 c.639 §13]