Letourneur Conseil > LNE Certification

LNE Certification: certified office

Letourneur Conseil is certified by :

  • LNE in fields A (studies, assistance and control) and B (engineering services for rehabilitation work). This certification is voluntary and is a guarantee of quality;
  • LNE certification in field D (PC16-5 and PC16-6 attestations), which is a regulatory requirement and enables us to issue the attestations mentioned in article R526-3 of the French Environment Code

LNE certification for polluted sites and soils guarantees that our design office provides services in compliance with :

  • regulations and legislation in force, in particular the Order of February 9, 2022;
  • the requirements defined in the certification standards (certification of service providers in the field of polluted sites and soils, known as " SSP certification ");
  • French standards NF X 31-620 relating to Polluted Sites and Soils, December 2021.

Domain A covers all studies, assistance and control activities concerning services relating to polluted sites and soils.


Domain B covers engineering work and rehabilitation.


Domain D concerns the Attestations to be attached to the building permit application (documents PC16-5 or PC16-6) when the project's right-of-way is in line with a former industrial site classified by the French government - ICPE site - or in line with a site referenced in the Soil Information Sector -SIS . The ATTES mission certifies that the development project (which may include decontamination work or specific construction measures) takes into account the state of the environment, and that the state of the site will be compatible with the intended use after construction.


* Arrêté du 9 février 2022 (French order of February 9, 2022) setting out the certification procedures provided for in articles L.556-1 and L556-2 of the Environment Code, and the model certificate mentioned in article R. 556-3 of the Environment Code.

See the videos in the “Guide du donneur d'ordre” for an insight into the issues surrounding polluted sites and soils, and the role and services of certified companies.





  • Letourneur Conseil

  • 103 avenue Félix Faure
    75015 Paris France

  • 01 78 16 45 10

Polluted sites and soils

In 1996, the French Ministry of the Environment gave the following definition of a polluted site: a polluted site is a site which, due to former waste deposits or infiltration of polluting substances, presents a pollution likely to cause a nuisance or a risk for people or the environment.



Pollution management

In order to respect the overall economics of their projects and optimize their costs, project owners have a growing need to rely on quality partners in the fields of pollution control project management assistance (AMO) and pollution control project management (MOE).



Water management

European regulations require that good water status be achieved by 2015. This means that works and activities with an impact on aquatic environments must be designed and managed to respect the balance and uses of water.



The ICPE

Sites classified as ICPE (Installations Classées pour la Protection de l'Environnement) or IOTA (Installations, Ouvrages, Travaux, Activités) are subject to specific procedures, as they are likely to have an impact on the environment through soil, air and water pollution.