Os municipality has, in the municipal council resolution 14.02.12 decided that a new main treatment plant shall be established for sewage,
Project OHARA, which is situated in rock under Liafjellet in Ytre Moberg.
These tender documents for Consultant Rock Installations, OHARA are for engineering design services, preparation of drawings and a description for collecting tenders for blasting the access tunnel, rock hall for the treatment plant and discharge tunnel, which are necessary for the establishment of the treatment plant.