Control the effects of rains

• Higher part of the site :
  
  Creation of a decantation basin under the old well so thet 1)  the lower part and the higher part of the site can communicate and 2)  to capt the rain water from the higher part. This excess of water will then be oriented to the storage basin and  utilized in case of fire or to spray the plants.
   

• Lower part of the site :
  
  Improve the existing installations done by Solvay in 1998 (water pipes to the calanques).
   

• Orientation of the slopes in order to convey the water toward the storage basin.