Martinique

Ginger Géode is the main contractor for the design and construction of the Mangot-Vulcin Interchange in the commune of Le Lamentin. We are working on this major project on behalf of the Communauté Territoriale de la Martinique (the Martinique department and region). Among other things, the works will involve the construction of an engineering structure for the crossing of a national road and the routing of a public transport line through a protected area. The design phase is now complete. We are about to start the consultation phase with contractors, followed by 2 years of work that will lead to the commissioning of this landmark structure for the island of Martinique, which will relieve traffic congestion in the area and make life easier for local residents.

The Madame River is the main watercourse in the City of Fort de France and flows into the Caribbean Sea at Pointe Simon. The river was dammed up in the 18th century to limit flooding in the city following the major climatic events that can strike the islands of the French West Indies. As part of the GEMAPI (GEstion des Milieux Aquatiques et la Prévention des Inondations - management of aquatic environments and flood prevention) initiative, the Urban Community of the Centre of Martinique (Communauté d'Agglomération du Centre de la Martinique - CACEM) commissioned Ginger Géode, Ginger Camaxa and Ginger Géolab to carry out geotechnical surveys along the banks of the Madame River in the centre of Fort de France, including core samples, pressuremeter tests, destructive drilling, surveys and investigations of the concrete walls and slabs of the canal, and sheet piling tests. These tests and their results will be used by the consulting firm appointed by CACEM to calculate the stability of the river protection structures. The CACEM will then decide whether or not to carry out reinforcement work.

Following a major earthquake in 2007, numerous structural defects and large cracks were found in the church, which is an emblem of Fort de France and the island of Martinique. Ginger Géolab was therefore commissioned to carry out a complete structural analysis of the structure in order to verify its resistance to earthquakes. This will then be used as the basis for major underpinning work to make the church safe and allow worshippers to return to the site. As part of this structural diagnosis, the local teams carried out a wide range of investigations, including core samples of the concrete and masonry elements, destructive drilling, steel sampling, structural surveys, corrosion potential measurements and carbonation front measurements. These investigations required the use of aerial work platforms and rope access technicians to reach the highest and most inaccessible parts of the structure.

In order to monitor water levels and the quality of the groundwater, BRGM contracted Ginger Camaxa to drill a deep borehole equipped with a 70-metre piezometer in the commune of Prêcheur. Prior to our involvement, 2 other companies had failed to deliver on this site. The local teams worked with the drilling centre in mainland France to provide the appropriate techniques and drilling equipment to carry out this unique mission on the island of Martinique. Our drilling team used an OPTIIMA machine to drill the borehole and then install the piezometric equipment that will allow BRGM to take its measurements.

In 2011, a major landslide occurred on the Morne Calebasse site in Fort de France. Since 2014, Ginger Géode has been responsible for monitoring the inclinometers and piezometers it has installed on the landslide in question. This allows us to determine whether the landslide is progressing and whether the ground is still moving. In addition, the City of Fort de France has begun work to reinforce the downstream section of the landslide to protect the lower part of the landslide area from possible ground movement. Ginger Géode is providing full project management for this reinforcement work, including the design and supervision of the works. The design phase is now complete, the contractor has been appointed and work has just started on the project, which will take approximately 10 months to complete.
 

• Documentary analysis: research into the history of the buildings, which may provide information on any contamination of the buildings, soil and subsoil;
• Inventory and quantitative summary of waste: qualification and quantification of materials to be recycled, recovered or disposed of in each building and in the surrounding external areas;
• Taking samples and carrying out analyses: core samples taken from concrete/blockwork in buildings earmarked for demolition, and identifying disposal options;
• Identifying waste management channels and processes;
• Technical and economic study on the clearing and dismantling of buildings in the Radoub Basin.

A survey of the entire fishing port using a light-weight boat (rigid inflatable boat) to measure the draught;

• Sediment sampling using a sediment core drill on the rigid inflatable boat in the vicinity of the target areas;
• Sediment analyses in an approved laboratory;
• Preparation of contamination maps and decision diagrams;
• Interpretation report identifying potential disposal options.

As part of the sale of its “Parc de la Ravine” site, located on rue Desclieux in Fort de France (department 972), the Regional Public Finance Department (DRFIP - Direction Régionale des Finances Publiques) commissioned Ginger BURGEAP to carry out an additional assessment and draw up a management plan. Since 1931, this site was home to a military fuel depot, which ceased operations in 2010. It covers an area of around 2 hectares. In the past, hydrocarbon contamination has been detected in the soil at various locations on the site. After the various assessments (2000, 2009, 2013), there were still uncertainties about the various environments, making it impossible to draw up a management plan. The purpose of the additional assessment is to identify and pinpoint the exact location of the contamination concentrated in the soil and to verify the impact on groundwater and soil gases in order to develop a management plan for the site.

SAEM LE GALION produces sugar (agri-food) at its Galion factory in La Trinité, Martinique (department 972) This site is an Installations Classified for the Protection of the Environment (ICPE), subject to Authorisation, governed by prefectoral decree no. 09-02558 of 29 July 2009.
In accordance with the prefectoral decree requiring the semi-annual monitoring of groundwater quality in the area of the 6 piezometers on the site, SAEM LE GALION commissioned Ginger BURGEAP to carry out two semi-annual groundwater quality monitoring campaigns for 2023.
 

SOL ANTILLES GUYANE has been running the Robert service station since the 1960s. The station was renovated in 2016. 
SOL ANTILLES GUYANE has commissioned GINGER BURGEAP to monitor the quality of the groundwater and soil gases at the Robert service station and two adjacent plot every six months.