Preventive and curative maintenance of wastewater network equipment (Wastewater, sewage, hydrocarbons, siphon, and siphoid mouth).

Curative maintenance of rainwater networks.

Spot repairs of networks.

This consultation follows a no-action declaration for lot n o 3: Heritage attached to the territory of Rennes Sud.

Maintenance of wastewater and rainwater networks excluding hydrocarbon networks, all-water pits and pits.

Quantitative:

- 25 976 linear meters of vertical columns,

- 8 697 linear meters of horizontal parts,

- 168 siphons,

- 264 siphoid mouths.