The project is designed to minimize soil sealing by using permeable materials wherever possible. 

However, some impermeable surfaces (such as the forecourt just before the stadium entrance) are unavoidable to accommodate supporters. 

No rainwater from the project site will be directed into the sewage system. Rainwater will either be redirected to the Senne via the construction of a new connection from the stadium’s retention tanks to the river, or reused directly on site through storage reservoirs, for example for the pitch, cleaning and sanitary facilities. 

This culvert (which will be financed by Union) constitutes the missing link in the existing municipal rainwater network. It will not only manage rainwater from the project but also improve overall rainwater management in the eastern part of the municipality of Forest.