Nordhordland and Gulen Intermunicipal Sanitation Company (NGIR) shall expand their landfill area and must therefore establish new bottom and side sealing. A vertical concrete wall must thus be established in the north-eastern corner of the new area, in addition to laying out layers of different matter and cloths. Including bentonite and HDPE membranes. Furthermore, the plant shall be able to have good control of all water that comes in, which results in a considerable number of pipes divided between drainage pipes under bottom sealing and drainage pipes inside the cell. In the eastern corner of the new landfill area there will be a basal of water and sewage pipes that shall be cast on.