topographic and bathymetric surveys involved in the restoration of the ecological continuity of the Sélune

The purpose of this consultation is to carry out topographic and bathymetric surveys during the study phase and in the works phase as part of the Sélune renaturation operation in the Vezins sector. The consultation will result in the conclusion of a mixed-price framework agreement with a lump-sum party and a purchase order part. The contract is therefore divided into a flat-rate share relating to the services to be carried out as part of the diagnostic phase with the realization of surveys by surveyor including in particular: - realization of topographic and bathymetric profiles along the valley; -carrying out topographical and bathymetric surveys of works located in the minor bed of the Sélune. This first phase will take place following the notification of the market in order to carry out the readings during low water periods in the summer of 2023. The contract also includes the realization of services passed through purchase orders, according to the needs during the different phases of studies and works to be followed (additional needs in the study phase, control of works ...)