This consultation concerns contract no. 21S1I088GHIJ, whose purpose is an external environmental control mission to be carried out as part of the construction work of Sector 1 of the Seine-Nord Europe Canal, and more specifically the following lots: - lot 7: External control relating to soil quality analyses, excavated material, backfill, land movements and storage areas; - lot no. 8: external control of the quality of water and aquatic environments; - lot 9: external control relating to pyrotechnic risks; - Lot 10: external control relating to construction site nuisances vis-à-vis the neighborhood

Quality control of excavated material and sediment may occur in the following cases: - verification of the quality of material sorting by companies in the context of land movement; - control of the environmental quality of the soil under the temporary storage areas before storage or during their restoration or even of the stripped land and re-implemented on the temporary and permanent storage areas;? The characterization of wild deposits identified during construction ;? Arbitrate non-conformities and contradictions that could be raised by the internal controls of the TOARC market and the outlets of the host market. Control of the chemical quality of filler fillings

The control of discharged water may relate to:- the control of the discharge of mine water on the ground (Article 60.2 of the prefectural decree); - the control of rainwater discharge at construction sites including temporary or permanent deposit areas (Article 60.1 of the prefectural decree)- the control of aqueous effluent discharge from temporary storage areas (Article 143 of the prefectural decree)- the control of the discharge of road wash water at the construction sites (Article 60.4 of the prefectural decree)

The various project sites present a risk of accidental discovery of a craft or remnant of war that could present a risk of pollution. If necessary, the site will be made safe and stopped, the time to ensure the treatment of the pyrotechnic risk and the restoration of the grounds. The control concerns sites that have been purged of pyrotechnic risk (removal of ammunition). It includes:? Analysis of the EOM's request; The preparation of the field intervention; The supply of all the equipment necessary for the intervention; The collection and synthesis of external data necessary for the correct interpretation of the control (weather conditions collected from Météo France); On-site sampling to allow soil analysis, and if necessary, water and sediment, including travel to and from staff and equipment, necessary sampling equipment. The levy for

Checks will be carried out on:- noise levels on and near construction sites to verify the level of noise impact on the site environment as part of the work;- vibrations on or near construction sites to verify the level of vibratory impact on the site environment as part of the work;- dust emissions on and near construction sites to verify the absence of impact on the site environment in the context of the Works