Question 6560 — waste

Summary

Mr. Auguste Evrard questions the Minister of Ecological Transition, Biodiversity, Forests, Sea and Fisheries on the fate of non-dangerous but non-inert sediments extracted during post-flood cleaning in the Pas-de-Calais department. Following the floods of 2023 and 2024, Voies navigables de France (VNF) carried out emergency cleaning operations, resulting in the extraction of approximately 83,000 m3 of sediment from the canals and waterways in the region. Although these materials are not classified as dangerous, their non-inert nature strongly limits their reuse. Today, these sediments are mainly used to backfill quarries or, for lack of a local solution, sent abroad, notably to Belgium. This situation raises questions, while several regional initiatives have demonstrated their potential. The Sedimaterials program, launched in 2009, led to the creation of the ECOSED standard to regulate the reuse of sediments. In 2018, VNF produced sedimented concrete with performances comparable to those of conventional 30 MPa concrete. Why are these sediments still not used, even though their potential is well established? The main obstacle therefore remains legal, in particular the maintenance of waste status. Exiting this status, priority for the Union of French Ports, would make it possible to open up new sectors, particularly agricultural ones. In this context, what concrete measures is the State planning to remove these obstacles and encourage contractors to engage in valorization? The question is all the more urgent as the Nord and Pas-de-Calais have several hundred thousand tons and 5 million cubic meters of port sediments, which leads to very high storage costs. It is therefore necessary to accelerate the transition towards a circular economy to structure a real sector for the recovery of sediments. Consequently, he asks what concrete measures the Government intends to implement to support the recovery of non-dangerous and non-inert sediments, in a circular economy logic.

Machine translation from French. The official text remains authoritative.

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