Large-scale retail stimulates business - and seals valuable soil. It is therefore only to be welcomed if the associated traffic areas are opened up as far as possible for infiltration and evaporation. Edeka and its subsidiary Netto have covered their parking area at the Gammertingen site with the environmentally friendly GDM.DRAIN stone design paving. The structurally tight concrete blocks ensure good hydraulic performance with all the required stability thanks to infiltration via joints and integrated stone channels.