Trident Service

Environmental services for the public and private sectors.


Organized according to sectors of expertise:

European Commission - Grontmij | Carl Bro A/S

  • Project: Preparation of the documents for the European tender to operate a landfill and two transfer stations associated in Northern Cyprus.
  • Date: May 2011.
  • Contact: Mr. Ole Houmoller, Team leader :

SEMARDEL, Ecosite de Vert-le-Grand (91)

  • Project: Response to an invitation to tender for the concern of waste reception centres of the SITOMAP (Pithiviers area). Evaluation of necessary resources (men and equipment); drafting of the technical worksheet.
  • Date: November 2008.
  • Contact: Mr. Patrice BRUN , +33 (0)1 64 56 75 00.

SEMARDEL, Ecosite de Vert-le-Grand (91)

  • Project: nventory of waste treatment units in the Ile-de-France area : their capacity, the current prices of treatment and their evolution.
  • Date: October 2008.
  • Contact: Mr. Michel LEGEAY, +33 (0)1 64 56 75 00.

SOGREAH, French Ministery of Finance

  • Project:Creation of a regional centre of waste recovery and waste treatment in the Donetsk area in Ukraine.
  • Date: September 2008.
  • Contact: Mr. Michel VALIN, +33 (0)4 76 33 43 18.

COMET Traitements, Chatelet (Belgium)

  • Project: The treatment of grinding residual in France: the regulation, the regulatory changes expected, analysis of the current practices of elimination of the grinding residual, list of the sanitary landfill sites in France.
  • Date: August 2008.
  • Contact: Mr. Stefan JOOSTEN, +32 49 79 74 263.


  • Project:Response to the tender to design, implement and operate the ultimate waste storage centre of Perpeyzoux, Monistrol sur Loire (43 120)
  • Date: October 2007.
  • Contact: Mr. Matthieu CHARREYRE, +33 (0)4 71 02 22 94.

Veolia Environnement

Subcontracted through SOGREAH.

  • Project: Waste management project for the town of Sharjah, United Arab Emirates. Deliverables included a comprehensive study of targeted waste, defintion of ways and means, and a study of payment mechanisms in relation to the waste management contract signed between the town of Sharjah and Veolia Environnement.
  • Date: March 2007.
  • Contact: Mr. Pierre Galzin, Director of Projects, +33 (0)4 76 33 41 81.

European Union

Subcontracted through SOGREAH.

  • Project: Master plan for waste disposal in the Province of Adjara, Georgia. Execution included the shutting down of two landfills and redevelopment of the terrain. In compliance with European standards, a new landfill was built for waste collection, selective sorting, and recycling within a regulatory framework of environmental protection.
  • Date: October 2006.
  • Contact: Mr Dominique Combe, Assistant General Manager, +33 (0)4 76 33 40 60.

Valorga/Urbaser Environnement

On behalf of the SEEDR.

  • Project: Invitation to tender from a public service delegation for the design and 15–year operation of the waste treatment facility of the SEEDR, Roanne Region. The design of the landfill technical centre included a project outline, a brief and a detailed preliminary study. Execution included earthworks, installation of both active and passive watertight barriers, water management, draining, lixiviation and treatment of biogas. Deliverables also comprised a complete description of operations, landscaping, and budget.
  • Date: September 2006.
  • Contact: Mr. Jean Louis Dorignac, Director of Tendering, +33 (0)4 67 99 41 14.