The purpose of this consultation is to award a works contract - lot n ° 25 "environmental finishing and development works on the right bank of the Isère", as part of the hydraulic, environmental and landscaping works. de l'Isère, upstream of the Pont de la Bâtie, units 2 & 3 (Isère - 38). It forms part, within the works operation, in an allotment of 31 lots, handled by separate contracts, within the meaning of article R. 2123-1 of the public order code, as defined in the Annex No. 1 of the Special Administrative Clauses (CCAP). Each lot is the subject of a separate market. For lot 25, it is planned to break down into slices:

- a firm phase nº 25 - finishing works and environmental improvements on the right bank of the Isère; and

- an optional phase no. 25.1 - completion of the finishing work on environmental sites.

The description of the works and their technical specifications are given in the Cahiers des clauses technique particular (CCTP) of the contract. The works relate to the construction of hydraulic structures, the reinforcement of dikes, the creation of new structures in merlons, landscaping and leisure facilities, services for the implementation of monitoring and warning systems. The works of lot nº 25 are located along the banks of the Isère between Barraux and the Pont de la Bâtie with regard to the development works of the environmental sites. They also concern the sites of:

- the Goncelin gravel pit in the town of Goncelin;

- the gravel pit of La Berche in the town of Saint-Vincent-de-Mercuze;

- the upstream gravel pit of La Terrasse in the town of La Terrasse.