Open invitation to tender, deadline 13.09.2013, for geological consultancy services during refurbishment and upgrading of the 5.7 km Kerenzerberg tunnel on N03/70. Contract duration 01.01.2014 to 31.12.2022. Contact Ofrou, Winterthour, e-mail beschaffung.winterthur@astra.admin.ch. For more, go to http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=785103. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=256527-2013. 31/13.