by Mathieu NOELOperations Manager mnoel@groupe-ect.com Gone are the days when construction machinery would start up in a plume of smoke. However, digging, modelling and landscaping on our sites require the use of bulldozers, trax trucks, caterpillar excavators and articulated dumpers, all of which are sources of GHG emissions and pollution. How can we fit a decarbonization and emissions reduction trajectory into the reality of a construction site activity, with obvious budget constraints, and given the state of technological advances in both machinery and fuels? Our assessment is clear: while investment in machines has proved its energy efficiency, the search for

2 electric bulldozers to reduce the carbon footprint of land reception and earthworks at ECT sites. How to reduce the carbon footprint of ECT sites?  A first step in our decarbonization trajectory has been taken with the Bergerat-Monnoyeur company. ECT has acquired two Cat D6XE bulldozers. This model is the first electric-powered bulldozer with elevated transmission. This new technology optimizes and regulates internal combustion engine speed: the power calls, fuel consumption peaks, are just some of the benefits that managed by an electric hydraulic boost. The target for reducingCO₂emissions is 20%. These machines are also characterized by their ease of use. for

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

A partnership for soil fertility: On Friday September 23, Laurent Mogno, President of ECT, and Léon Garaix, Director of Ecole Du Breuil, officially signed a partnership agreement between Ecole Du Breuil and ECT. This partnership has been operationally active since the beginning of 2022. We are proud to be a partner of this magnificent school of the City of Paris which for over 150 years has been home to one of the largest urban horticultural estates devoted entirely to teaching. In particular, this partnership aims to help develop specific expertise in soil-related issues. And enable BPREA students to testfertile substrate

We would like to inform you that during this summer period, all our sites currently in operation will remain open, except for a few days for the Cormeilles-en-Parisis and Vaujours sites, according to the schedule below: Cormeilles-en-Parisis (95) site Friday, July 15 Monday 8 to Friday 12 August inclusive Vaujours site (93) Monday August 15 to Friday August 19 inclusive All other sites remain open at their usual times, and will not be closed on Friday 15th July. If you have any questions, please do not hesitate to contact your sales representative.

ECT enters into a sponsorship agreement with the Muséum National d’Histoire Naturelle. The aim of this sponsorship is to create a systematic map of “the biodiversity of reworked soils”. A systematic map is a bibliographical synthesis intended for operational research players. This practice is currently booming in the field of ecology, and is strongly recommended by the Fondation pour la Recherche sur la Biodiversité(FRB). This is an unprecedented approach to the issue of reworked soils. The PatriNat unit, under the aegis of the Muséum National d’Histoire Naturelle, will draw up an overview of available scientific studies. And list documented best