The environmental impact studies are made up of a brief description of the project which includes all the elements and actions that may generate impacts in the construction phase, the exploitation phase and the development phase of the business activity.

From Colomer-Rifà , different alternatives are proposed that best suit each project, always following the same procedure.

These alternatives will be evaluated , for example, according to the location of the territory, biological corridors or routes, or processes (operational, industrial, etc.) with their possible impact and justification.