The study performed by Nemus involved conducting underwater and terrestrial field surveys and meetings with a wide range of entities to accurately determine the effects of this project, which included the extension of the runway to 2,700 meters (270 m over the sea), the deviation and regularization of the River Água Casada and the construction of a new road connecting the North and South areas of the airport.

In addition to the characterization of the initial environmental situation, the study evaluated the environmental impacts and proposed mitigation measures for the analyzed descriptors: climate, geology and geomorphology, water resources and water quality, production and management of waste and effluents, environmental noise, land use and landscape, ecology, flora and fauna, air quality, socioeconomics and environmental risks, also taking into account the need for population resettlements.

Nemus’ experience in the airport sector also includes a number of studies and analysis performed in Portugal since 2003 for the environmental assessment of the development alternatives for the current Lisbon airport and to support the various decisions concerning the location of the future airport, first in Ota and then in Alcochete.