Pyrite pollution risk: let’s put an end to preconceived ideas
Soil reception conditions Between June 2020 and April 2021, ECT received soil from its Villeneuve-sous-Dammartin (77) and Annet-sur-Marne (77) sites that complied with the regulations but was potentially pyritiferous. The soil came from the excavation of the Grand Paris Express metro lines. Since 2021, ECT has been in contact with the Prefecture of Seine-et-Marne, the Ministry of the Environment and BRGM. These discussions validated ECT’s approach to risk management and analysis methodology. Two prefectoral decrees issued in July 2022 set out the procedures, controls and analyses carried out by ECT. They are planning two annual survey campaigns. What is pollution
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