Establishment of an underground concrete basin on approximately 1,600 m³. The basin was after execution covered with topsoil and sown with grass, so that only the covers were visible above ground. At the excavation for the basin, a curtain of sheet piling was established, which guarantees the stability of the surrounding soil and partly reduces the need for lowering of the ground water. Establishment of an underground pipe basin in a public road area and the establishment of a new ø200mm discharge pipe. The work was done as a sub-contracter for MT Højgaard.