​SEDISEINE

Client: HAROPA Port

Scientific partner: Neo-Eco

Location: Moulineaux-Grand-Couronne and Anneville-Ambourville ‘loop’, Normandy, France

Deliivered in: December 2025

 

Reusing of river sediment near Rouen, in civil engineering (road sub-base layers) and agriculture, 3 years after marine sediment reusing near Le Havre (‘SEDINNOVE’). Silt sediment radically changes the structure hence water/nutrient retention of formerly unproductive sandy plots: +20–30% yields, new crops enabled. A truly breakthrough innovation for farmers.

 

Through both economic applications, the port’s plan was to optimize sediment management and revenues, while benefiting to local area and structuring new value chains. This implied (1) building tangible off-takers interest and (2) shaping a competitive commercial offering.

 

To this end, Inecko reached out to dozens or civil engineering and groundworks companies, as well as all local farmers. We established this entirely new connection between logistics and farming industries, collected individual and operational feedbacks, triggered strong interest from the 2 markets, sized those, evidenced socioeconomic benefits and recommended ways to optimize those, whether for the port and local area.

 

Specifically, we have:

 

• Established and modelled production costs, revenue and profitability, for 1 input materials and 2 recycled end products – 10 000 t annual capacity, EUR 63k revenue, 29% EBITDA margin

• Sized 2 target markets on a 10 and 40kms radius

• Secured market uptake in collaboration with regional off-takers and stakeholders (groundwork and sediment management provider Agricultural Chamber, quarries, Council and Mayor of the most relevant town), prior to providing strategic, operational and marketing recommendations including risk analysis

• Quantified and interpreted socio-economic outcomes (direct, indirect – jobs, wages, revenue, value added, tax), advised on their enhancement

• Assessed long-term regional development impacts (innovation capacities, skills, ecosystems)

• Collected quantitative and qualitative primary data via 12.5 hours of interviews with 32 respondents, follow-up outreach, and a 6-respondents online survey