Negotiated invitation to tender, deadline 13.05.2015, for geotechnical assistance to the general management during construction of RTPGP (Reseau de Transport Public du Grand Paris). The contract is composed of four lots: line 15 East (lot 1), line red 15 West (lot 2), line red 17 (lot 3) and line green 18 (lot 4). Value of contract EUR17 million, excluding VAT, duration 72 months. Contact Societe du Grand Paris, att.n m.lle Staadal Maude Saint-Denis, tel +33 182462000, fax +33 182462031, website www.marches-publics.gouv.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=120979-2015. Ref. n. 2015PN012. 16/15.