In reaching a decision on a proposal or an alternative, the board shall consider the factors affecting such proposal, which shall include, but not be limited to the following:
(1) Population and territory; population density; land area and land uses; comprehensive plans and zoning, as adopted under chapter
35.63, 35A.63, or
36.70 RCW; comprehensive plans and development regulations adopted under chapter
36.70A RCW; applicable service agreements entered into under chapter
36.115 or
39.34 RCW; applicable interlocal annexation agreements between a county and its cities; per capita assessed valuation; topography, natural boundaries and drainage basins, proximity to other populated areas; the existence and preservation of prime agricultural soils and productive agricultural uses; the likelihood of significant growth in the area and in adjacent incorporated and unincorporated areas during the next ten years; location and most desirable future location of community facilities;
(2) Municipal services; need for municipal services; effect of ordinances, governmental codes, regulations and resolutions on existing uses; present cost and adequacy of governmental services and controls in area; prospects of governmental services from other sources; probable future needs for such services and controls; probable effect of proposal or alternative on cost and adequacy of services and controls in area and adjacent area; the effect on the finances, debt structure, and contractual obligations and rights of all affected governmental units; and
(3) The effect of the proposal or alternative on adjacent areas, on mutual economic and social interests, and on the local governmental structure of the county.
The provisions of chapter
43.21C RCW, State Environmental Policy, shall not apply to incorporation proceedings covered by chapter
35.02 RCW.