Polygons which define the range of sound corresponding to the alarms. In accordance with each type of alarm, the sound radius covered can be 800 or 400 metres away from the siren, or maybe unidirectional, covering a distance of 700 m with a 70º opening.

The area of implementation subject to the Environmental Impact Statement (16.6% of the territory) includes partial nature reserves, PEIN areas that have no special protection and have more than 1,000 ha, the border of some large natural areas classified as incompatible zones and areas of high density of raptors (including the largest concentrations of vital areas). The other two areas correspond to incompatible area (23%) and the compatible area prior environmental authorization (60.4%).

The incompatible area (23% of the territory) includes national parks, natural areas of national interest, integral natural reserves, natural parks, PEIN areas with an area less than 1,000 ha, special protection areas for birds and vital areas (1 km radius) of raptors listed as endangered and listed in Annex 1 of the Birds Directive. For endangered birds such as the bearded vulture, the radius is 5 km. The other two areas correspond to the area of implementation subject to the Environmental Impact Statement (16.6%) and the compatible area prior environmental authorization (60.4%).