Conducting studies prior to the completion of work on 6 non-domanitary containment systems of the Loire in Maine-et-Loire.

5 lots: Saumur dikes (Lot 1), Vernusson dike (Lot 2), Petit Louet dike (Lot 3), Saint-Georges-sur-Loire dike (Lot 4), Montjean-sur-Loire dike ( lot 5).

VTA, work programs at the AVP stage, EDD.

Realization of studies prior to the realization of works on the dikes of Saumur (lot 1).

VTA, work programs at the AVP stage, hydraulic study, ESD.

Conducting studies prior to the completion of work on the Vernusson dam (lot 2).

VTA, EDD, work programs at the AVP stage.

Conducting studies prior to the completion of work on the dike of Petit Louet (lot 3).

Work programs at the AVP stage.

Conduct of studies prior to the completion of work on the dike of Saint-Georges-sur-Loire (lot 4).

Work programs at the AVP stage.

Conduct of studies prior to the completion of work on the dike of Montjean-sur-Loire (lot 5).

Work programs at the AVP stage.