With particular reference to apartment houses [namely residential neighborhoods made up of single family homes on their own lots], it is pointed out that the development of detached house sections is greatly retarded by the coming of apartment houses, which has sometimes resulted in destroying the entire section for private house purposes; that in such sections very often the apartment house is a mere parasite, constructed in order to take advantage of the open spaces and attractive surroundings created by the residential character of the district. Moreover, the coming of one apartment house is followed by others . . . .
Id.
[Section] 935 . . . Natural or artificially established barriers will prove effective in protecting a neighborhood and the locations within it from adverse influences . . . [including] prevention of the infiltration of business and industrial uses, lower class occupancy, and inharmonious racial groups . . .
. . . .
[Section] 937. Quality of Neighboring Development . . . Areas surrounding a location are investigated to determine whether incompatible racial and social groups are present, for the purpose of making a prediction regarding the probability of the location being invaded by such groups. If a neighborhood is to retain stability, it is necessary that properties shall continue to be occupied by the same social and racial classes.
Id.
[W]ithin urban growth boundaries each city and county shall amend its comprehensive plan and land use regulations for all land zoned for single-family residential uses to allow for siting of manufactured homes as defined in ORS 446.003 (26)(a)(C). A local government may only subject the siting of a manufactured home allowed under this section to regulation as set forth in ORS 197.307 (5).
Id.
We, the people of the Portland area metropolitan service district, in order to establish an elected, visible and accountable regional government that is responsive to the citizens of the region and works cooperatively with our local governments; that undertakes, as its most important service, planning and policy making to preserve and enhance the quality of life and the environment for ourselves and future generations; . . . do ordain this charter for the Portland area metropolitan service district, to be known as Metro.
Id. The Charter was adopted as provided in the Oregon Constitution Article XI, Section 14, providing that [t]he Legislative Assembly shall provide by law a method whereby the legal electors of any metropolitan service district . . . may adopt . . . a district charter. Or. Const. art XI, � 14. Oregon Revised Statutes chapter 268 provides for and describes the role and powers of metropolitan service districts generally; the Portland region is the only part of the state to have implemented these provisions. See Metro, Or., About the Charter (2000) (Metro is the only regional government in the United States with a home rule charter . . . .), available at http://www.metro-region.org/article.cfm?ArticleID =211 (last visited Apr. 4, 2003).
The Metro Council shall adopt a fair share strategy for meeting the housing needs of the urban population in cities and counties based on a subregional analysis that provides for:
� a diverse range of housing types available within cities and counties inside the UGB;
� specific goals for low- and moderate-income and market rate housing to ensure that sufficient and affordable housing is available to households of all income levels that live or have a member working in each jurisdiction;
� housing densities and costs supportive of adopted public policy for the development of the regional transportation system and designated centers and corridors;
� a balance of jobs and housing within the region and subregions.
Id.
[Clean Air Act] violations in Portland have dropped from an average of 100 per year in the 1970s to none since 1987. . . .
Says William Schroer, a project manager with Apogee Research in St. Paul, Minnesota, Portland has held per-capita VMT steady over the past three years, an impressive accomplishment in an economy that is growing at twice the national average. Among other things, it means that in Portland, increases in driving are not currently eating into the decreased emissions benefits that technology has brought.
Charles W. Schmidt, The Specter of Sprawl, 106 Envtl. Health Persp. A274, A279 (1998), http://ehpnet1.niehs.nih.gov/docs/1998/1066/focus.html (last visited Feb. 7, 2003).