The project was challenging because of the sensitive environmental conditions. The construction site was situated in a protected dune area characterised by highly permeable dune sand. Because of the special location of the construction site, the environmental impact of dewatering had to be investigated in detail.
At Balen/Lommel, Nyrstar used a pond with an area of approximately 16 hectares to provide cooling to the production process. The requested cooling capacity, however, exceeded the potential of the pond. AGT was asked to re-dimension the cooling pond so that the cooling requirement can be fulfilled.