Köster was commissioned to waterproof a fire-fighting water basin under the highway near Rotterdam for Rijkswaterstaat, which is responsible for the design, construction, management, and maintenance of the Netherlands primary infrastructure facilities. Köster TPO Aqua was the logical next step due to its durability and maintenance-free application. Köster's participation has significantly improved the safety of this section of the road network. In the event of a disaster in the tunnel, the fire brigade will have access to extinguishing water in a very short time
