The restoration is realized taking into consideration the maintenance of usage of the ground at that moment and the original formation of landscape.
During the exploitation process, Bercontres realizes an integrated restoration. This means that already exploited areas are restored while the front of the quarry is making progress, keeping approximately the same surface without restoring, which is the minimum necessary area for the exploitation.
The first phase consists in removing and stocking the superior layer of the ground to use it subsequently in the restoring process. In these stocks, which have a maximum height of two metres, a mixture of graminaceous plants and other autochthonous herbaceous species is planted to support the biological activity.
The second phase starts after the appropriate or final morphology has been reached. At that moment, a layer of top soil from the initial removal or from external origin is expanded, with a thickness of at least 50 cm, on flat areas as well as on the slopes.
The third part consists in realizing a seeding for protection immediately after having placed the top soil. Therefore a mixture of autochthonous herbaceous species (graminaceous plant, legumes, labiates), that fit to the ecologic characteristics of the grounds that are to be restored, is used.
The plant cover will help to:
Maintain the stability of the slopes
Avoid its degradation caused by erosion
Regulate the water system
Provide better conditions for the progressive colonization of the autochthonous herbaceous species, shrubs and trees
The fourth phase begins one year after the protection seeding. After it has been considered to be stable without any visible signs of erosion, trees and shrubs proper to the area are planted.
During the following years, the progress is continuously controlled and the plants adapted and if necessary irrigated.
Bercontres participates in the life program named Ecoquarry, in collaboration with the University of Barcelona and other companies of this sector. The aim of that program is to determine the best restoration strategies in limestone quarries of the Mediterranean region.
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