Preparing rock compartments  for blasting on a 100 m high coastal cliff (La Réunion, 2006). © BRGM - Jean-Louis Nedellec


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Behaviour of groundwater in chalk and transfer of n-nitrosomorpholine (NMOR) and morpholine (MOR) contaminants in Seine-Maritime

In 2012, a substance of the nitrosamine family (n-nitrosomorpholine, i.e. NMOR) was detected in the groundwater that supplies drinking water to the towns of Bolbec and Gruchet-le-Valasse, in Seine-Maritime. A monitoring plan, set up at the instigation of the Regional Safety Agency (ARS), quickly...

Characterising spring water (unchannelled) used and consumed by the population in Guadeloupe

The Regional Health Agency (ARS) of Guadeloupe, as part of its mission to prevent health risks and under the National Chlordecone Plan, asked BRGM to carry out a study on springs which are unchannelled for drinking water supply, but nevertheless consumed, in order to inform the population about the...

Development of a hydrological model for predicting flows on the territory of the Seine-Grands-Lacs EPTB

The mission of the Seine Grands Lacs (SGL) Public Regional Basin Authority (EPTB) is to ensure flood control and low-water support throughout the Seine basin, upstream of Paris. As part of this mission, BRGM has been providing support since 2005 and has developed tools to help manage low-water...

Diagnosis of the sources and transfer of nitrates using an isotopic approach in groundwater abstraction structures in the Pas-de-Calais region

In 2016, the town of Berck-sur-mer (62), the manager of the Airon-Saint-Vaast abstraction structures, needed a more comprehensive understanding of the sources and transfer processes of nitrates in groundwater. The study, carried out by BRGM, combines the use of chemical tracers, water residence...

Diagnosis of the vulnerability to chloride of the drinking water supply in the Moselle river valleys

With the support of the Rhine–Meuse Water Agency, BRGM has developed an exploratory model to identify the vulnerability to chloride of the drinking water supply system of communities located in the Meurthe and downstream Moselle valleys –up to 2050.

DUPLOS and DIALOG: digital tools connected to the subsurface database

The aim of these tools is to provide a single centralised system for sending technical data relating to future boreholes, underground structures or excavation work to those involved in the declaration process (owners, prime contractors, operators, engineering consultancies and drilling companies...

HYDROSEDMAR: improving understanding of the hydro-sedimentary processes of the Bay of Fort-de-France

The HYDROSEDMAR project (2015-2019) is a modelling and instrumentation programme in the bay of Fort-de-France implemented by BRGM on behalf of the Central Martinique Urban Community (CACEM) as part of the contract covering the Bay of Fort-de-France. It has provided fundamental knowledge to help...

Mapping the presence of asbestos in the natural environment in 26 municipalities of Haute-Corse at a scale of 1:5000

Under a partnership with the Corsican Environment Office (OEC), BRGM began a study in late 2017 to identify naturally occurring asbestos and potential asbestos-bearing areas in 26 municipalities in Haute-Corse, in the Ponte-Leccia and central Cap Corse areas. This project follows on from similar...


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