
- Strategic studies and waste management plans
- Environmental performance
- Decontamination of sites and soils
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Targeted studies for better waste management
We are working alongside our customers, local authorities and industrialists, to meet the many challenges of circularity of resources throughout the project value chain, by designing concrete strategies and solutions to act in favour of the energy and ecological transition.
Optimising your resources: our mission!
Across the entire waste value chain, we are at your side.

A response to major challenges:

Supporting local authorities and manufacturers with solutions for better waste management
Tailor-made solutions to give waste a second life
Across the entire value chain, we put our consulting and engineering expertise at the service of better waste management in France, as well as internationally.

Strategic studies and waste management plans

Feasibility studies

Technical assistance, project management assistance

Project management design, drafting of contract documents, monitoring of construction work

Conduct technical, regulatory, environmental, organisational or due diligence audits
Ensuring environmental performance across the entire waste value chain
We support you in providing services with a net positive socio-environmental impact, in line with local environmental regulations.
At all stages of your projects, we reconcile environmental performance, technical and economic requirements to define high value-added projects.
Define an environmental strategy for sustainable and responsible projects : Project Management Assistance, territorial schemes, operational management plans, energy-climate (Renewable Energies, carbon footprint), circular economy.
To provide regulatory expertise and long-standing know-how on all types of files, at each stage of their preparation, from their drafting, appraisal to project authorisation.
- To offer innovative solutions with high technical and environmental performance by mobilising the multidisciplinary expertise of our teams on the subjects of regulatory environment, hydrogeology, hydraulics, geotechnics, urban development and infrastructure and processes.
- Benefit from expertise and feedback throughout the country through our expertise in waste storage facilities, organic waste recovery: biopackaging, (co-)composting and anaerobic digestion, waste sorting facilities (CS, SRF).
- Ensure the smooth running of the project with 100% of our teams trained in project management for agile working methods that promote the co-construction of the project, the anticipation and the cross-referencing of the know-how and objectives of the various stakeholders of multi-stakeholder projects with a high level of complexity.
Ensure the project management of the works: Complete and/or general project management, synthesis, OPC (scheduling, steering, coordination), and project management assistance, in accordance with the market framework and our positioning for public and private industrial clients.
Our dense territorial network and our nearly 75 years of know-how in the monitoring of works allows us a high level of responsiveness and fluidity in the execution of work, as well as a complete follow-up, until the industrial commissioning of the high-tech teams.
Identify the current state and environmental issues through impact analyses and the co-design of avoidance, reduction and, where appropriate, compensation measures. We provide an overview, both during the construction phase and during operation.
- Conduct technical, regulatory, environmental, organisational or due diligence audits on behalf of local authorities or manufacturers.
- Carry out regulatory control operations on the environmental performance of facilities (biogas, air, sound level, hydraulics, water quality, performance of active and passive containments, etc.)
- Securing the project for obtaining authorisations: scoping, advice, quality and rigour throughout the project to anticipate problems as early as possible and propose effective support solutions.
- Supporting the project in the ERCAS (Avoid, Reduce, Offset, Support, Follow) approach by integrating the environmental components of the project very early on and by building our projects iteratively around these constraints.

Co-constructing your projects across the entire value chain to ensure environmental performance
Decontaminating and rehabilitating polluted sites and soils to give them a second life
Preventing future pollution, ensuring the safety of newly discovered sites, knowing, monitoring and controlling the impacts, treating and rehabilitating according to the use and then perpetuating this use, keeping the memory, involving all the stakeholders: our teams address all these issues.
In response to the needs of manufacturers or development and construction projects, our engineers offer you adapted solutions.
Provision of financial guarantees, cessation of activity, construction or development project on a polluted or unpolluted site, environmental monitoring, we intervene at all stages of the life cycle of your projects:
Soil pollution studies
Preparation of cessation files
Management
Qualification and quantification
Operational expertise in asbestos removal and demolition
Asbestos removal, deconstruction, demolition, decontamination... Our teams are authorised to prevent asbestos-related risks and ensure your operations in:
Dismantling
Asbestos removal
Deconstruction
Demolition
Your projects are then secured, with control of possible hazards and drifts.
From the design phase, our authorised experts:
They trust us
Taking advantage of a new energy source to reduce a territory's dependence on fossil fuels
Our teams, reinforced by external expertise*, are carrying out a feasibility study for the Municipality of Meknes in order to assess the main challenges of the biomethane sector.
Securing the resource, sizing the purification process, analysing marketing channels, consolidating financial viability, etc. considering the absence of a city gas network in Morocco.
A set of missions involving:
- Carry out an inventory of the current degradation process, to anticipate production in the years to come Size the WAGABOX® purification process and its adaptation to the context of the site to remove any technical obstacles and define the costs of biomethane production
- Carry out a technical and economic study of biomethane recovery pathways, at the territorial level and on a larger scale, to identify the logistical, regulatory and financial issues of the "biomethane" sector envisaged
- Quantify, at each stage, the energy performance of the recovery solution to define a competitive and viable selling price for the biomethane produced and to analyse the financing mechanisms that can be requested
* Involvement of the Group's various business lines

Prepare the waste management plan for Croatia with specific analyses
To meet the requirements of the European Union, our team will provide expert support and will conduct the necessary analyses to support the Ministry of Economy and Sustainable Development (MESD) in the revision of the plan.
Our teams are responsible for providing a base of expertise to the MESD for the National Waste Management Plan, from 2023 to 2028 by:
Analysing...
- the current situation of waste management: the type, quantity and source of waste generated, transboundary shipments of waste, including forecasts of the development of waste streams
- the need for new collection systems and waste treatment infrastructure
Defining...
- measures to be taken to improve waste collection and its environmentally friendly reuse, recycling, recovery and disposal
- the necessary investments in the short, medium and long term and the possible sources of financing for the proposed measures
- Effective KPIs for monitoring NDMP implementation

Supporting the Seine Aval wastewater treatment plant in the modernisation of its biogas production unit
As project managers integrated into the design-build consortium, our teams are tasked with carrying out the project management services for the entire redesign of the unit, except for the medium-pressure biogas rack.
The Seine Aval wastewater treatment plant, which treats 1,500,000 m³/d of wastewater before being discharged into the Seine, is at the heart of a vast renovation project with a view to making it a modern plant combining performance and environmental protection.
A vast renovation project aimed at:
- Increasing the energy autonomy of the Seine Aval plant
- Controlling industrial risk and anticipating regulatory changes
- Offering an efficient and safe tool to operators
- Preserving the quality of life of local residents, thanks to a unit that blends into the landscape, on the edge of the forest

Supporting SIBA in the design of their second Sediment Management Unit
The natural site of the Arcachon basin is subject to sediment siltation, causing problems of hindrance to the navigability of oyster farmers, fishermen and boaters.
Our teams are supporting the Syndicat Intercommunal du Bassin d'Arcachon, in charge of dredging sediments from ports and channels, on the creation of its first onshore sediment storage and management unit.
The objective: to maintain the water levels necessary for users and to make waterways safer
Including their recovery in a context of biodiversity preservation, the sediments resulting from these operations are transported to settling and storage basins, then evacuated from the site once dry. These settling and storage basins have recently been categorised as Classified Facilities for the Protection of the Environment.
The storage and processing process required the creation of:
A project combining an industrial process with the development of a specific biodiversity:
- Promote the maintenance and/or development of natural fauna and flora
- Assess the attractiveness of the area after the work and during operation
- Creating a disturb-free space over a long period of the year has been achieved.
