Purpose of the Environment. The Legal Basis for Environmental Impact Statements. The Process of Preparing EISs. Public Participation. The Natural Environment: Earth Resources. The Natural Environment: Biology. The Man-Made Environment: Surface Water. The Man-Made Environment: Groundwater. The Man-Made Environment: Air. The. Man-Made Environment: Noise. The Man-Made Environment: Hazards and Nuisances. The Man-Made Environment: Historic and Cultural Resources. The Man-Made Environment: Transportation. The Man-Made Environment: Socioeconomics. Environmental Justice.