Excavation of the 721 m Gongolaz tunnel and 5,845 m Zabalzeta tunnel launched on 31st July, 2001 by jv of Dragados, Iruí±a, Obenasa, and Elcarte for Euro2.9 million and Euro25 million respectively. Completion programmed for 31st May, 2004. Unlined diameter is 6.10 metre. Gongolaz bored using a roadheader, and Zabalzeta is TBM-driven. Geology consists of marls with intercalated cemented calcareous sandstone of the Eocene period. Both segmentally lined. Tendering for 3.8 km Campanas tunnel, and 1,173 m Tirapu tunnel in 2003. Tendering for 1.2 km Lobera tunnel, and 500 m Pitilla tunnel in 2004. Same unlined diameter and geology. Visit www.cfnavarra.es/obraspublicas 46/01.Open call for bids, deadline 18th August, 2003 for engineering to manage the construction of sections 4, 5 and 18 of the Navarre Canal. Section 4 includes the Campanas tunnel (3.8 km) and section 5 the Tirapu tunnel (1,480 m). Visit http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=096161-2003, OJ S 107, or contact Canal de Navarra SA, Saragossa, fax +34 976306660. 24/03.Canal de Navarra S.A. has awarded a €72.2 million contract to build sections 4, 5 and 18 of the Navarre canal's irrigation project to a JV between Sacyr, Copisa and Arian Construccií³n. The three sections run from the Tiebas syphon to Artajona and have a capacity of 45m³ per second. Section 4 (9.9 km) runs through Biurrun and Olcoz and includes the 3.8 km-long Campanas tunnel. Section 5 (4.6 km) requires the building of the 1,480 m Tirapu tunnel. No tunnels in section 18. Visit www.sacyr.com, www.copisa.es and www.arianconstruccion.com 49/03.Idom Internacional will be responsible for the construction management of sections 4, 5 and 18 of the Navarre canal project. Section 4 includes the 3.8 km-long Campanas tunnel and section 5 the 1,480 m Tirapu tunnel. Section 18 has no tunnels. Visit www.idom.es 13/04.Open call for tenders, deadline 28th September, 2006 for construction of sections 6, 7A and 19A of Navarre's water canal, including the 1.2 km Lobera tunnel. Its inner diameter will be 5.4 m. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=163497-2006, OJ S 151, or contact Canal de Navarra, Saragossa, fax +34 976306660. 37/06.Construction of the sections of Navarre's water canal from Artajona to Tafalla has been awarded to a JV of Acciona and Arian Construccion for EUR48 million. Construction will take 36 months. The 1.2 km 5.4 m ID Lobera tunnel will be built. Visit www.acciona.es and www.arianconstruccion.com 03/07.