(5) Before making a decision regarding the river area to be included in the system, a variance in policy, or the excluding of land from the provisions of the management policies, the commission shall hold hearings in accord with chapter 34.05 RCW, with at least one public hearing to be held in the general locale of the river under consideration. The commission shall cause to be published in a newspaper of general circulation in the area which includes the river or rivers to be considered, a description, including a map showing such river or rivers, of the material to be considered at the public hearing. Such notice shall appear at least twice in the time period between two and four weeks prior to the public hearing. The commission shall seek and receive comments from the public regarding potential additions to the system, shall initiate studies, and may submit to any session of the legislature proposals for additions to the state scenic river system. These proposals shall be accompanied by a detailed report on the factors which, in the commission's judgment, make an area a worthy addition to the system.