Negotiated call for bids, deadline 12th November, 2007 for adaptation of the water catchment at Les Bois hydropower station in Upper Savoy, further to the melting of the Mer de Glace glacier. The contract includes the drilling and blasting of an exploratory and access tunnel (10% gradient, length of 800 m to 1 km, more than 3 m in diameter), the digging of exploratory galleries under the glacier with hot water (500 m to 1 km), the boring of the permanent headrace tunnel (8% gradient, length of 600 m to 800 m, diameter 3.40 m), a tank under the glacier, an inclined shaft (100% gradient, 45 to 60 m of level difference, 3 m in diameter) and concreting of the invert of the exploratory and access tunnel. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=247195-2007, OJ S 203, or contact EDF, Le-Bourget-du-Lac, fax +33 479606344. E-mail jean-christophe.perroux@edf.fr 43/07.
