The Centre’s ground is bowl-like with a gentle slope of 0 to 3% and a difference in height that does not cause any
major risks of erosion. Landfill cells are located at an average altitude of approximately 1100 metres.
The formations’ lithology consists of limestone, limestone gravel, dolomite, marl, clay, silt and sand.
A landfill cell that has a volume of approximately 60000 m3 (140 x 60 x 7 m) is built and sealed on its bottom and
sides with an HDPE geo-membrane 2 mm thick. It is also covered with a protecting geotextile membrane which has
a density that equals 1 200 g/m2.