Environmental component	Aspects	Description of the aspects to evaluate
Physical-chemical	Geology and Geomorphology	Types of rocks. Geotechnical characteristics and mineral deposits. Relief, contour and slope analysis.
	Soil	Characterization of soils. Potential uses.
	Seismic conditions	Seismic-tectonic survey, seismic hazards in the region. Construction alternatives for the project.
	Air quality	Possible emissions caused by the project. Health protection areas. Continuous and occasional (peak) noise levels. Emissions of particulates and greenhouse gases.
	Climate	Microclimate, air quality and the influence of the project. Temperature, winds, humidity, precipitation, sun exposure, evapotranspiration.
	Fresh water	Availability, management and quality of public water supply services. Sources of supply. Surface and underground water and their quality. Natural and artificial drainage systems. Sources of contamination.
	Salt water	Quality of coastal and marine waters. Currents, tides and sources of contamination.
Biological-ecological	Vegetation and flora	Land-based, aquatic and marine plant types and formations. Endemic species, species in danger of extinction. Fragile or highly vulnerable ecosystems. Forests. Urban green areas.
	Animal life (fauna)	Status and distribution of land, aquatic and marine animal life. Endemic species and endangered species. Habitat, ecosystems, migration patterns. Fisheries and wildlife.
	Ecological relationships	Management of protected areas and areas of high environmental sensitivity. Relationships: climate-vegetation-soil; climate-topography-vegetation.
Socio?cultural context	Human settlements and social actors	Populated settlements and key social stakeholders. Social behaviors and poverty. Total resident and occasional population, by ages and sex. Labor force. Education and health.
Socio?cultural context	Cultural heritage and recreation.	Historical and cultural traditions. Tangible and intangible heritage of a historical and archeological value, monuments and architectural works. Recreation.
Economic?operational environment	Economic relations	Types of property and ownership patterns by sectors. Average incomes and livelihoods.
Economic?operational environment	Services	Basic services available to the community and the quality of those services. Infrastructure.