Pauline Leddet-Troadec


I help companies evaluate risks and solve problems in environmental law and I provide them with strategic, business-oriented advice to successfully navigate their environmental challenges.

Pauline Leddet-Troadec works on both litigation (before administrative, civil and criminal courts) and advisory matters having to do with environmental regulations. She focuses on matters regarding industrial environmental law including classified facilities, industrial risks, contaminated sites and soils, water or air impacts, technological risk prevention plans (French “PPRT” regulations) and chemical products. 

Pauline advises on waste management and circular economy and also works on negotiation and drafting of contractual clauses for real estate transactions (sale and lease back operations, leases agreement, etc.).

In addition, she counsels clients on matters regarding sustainable development and biodiversity issues, such as compensation obligations, protected species derogations, etc.

She advises French and international companies, as well as public entities.

Pauline is active in legal associations. She has founded an Interprofessional environmental law association : the Cidde (“Cercle interprofessionnel du droit de l’environnement”). She is President of such association.
She is also Secretary-General of Elles&Droit (legal women’s network association).

Pauline is a lecturer at the Centre de Formation de Droit de l’Environnement, and The Ecole des Mines de Douai.


  • Université Aix-Marseille III, Master II in International and European Environmental Law, 2009

Bar and Court Admissions

  • Paris


  • French
  • English


Permitting - Compliance
  • Advised clients on regulatory issues (in particular linked to Classified Facilities regime) and helped obtaining environmental permits for clients operating in various economic sectors
  • Represented numerous clients for compliance issues, in their relations with different stakeholders : environmental authorities, municipalities, NGO, neighbors
Transactional experience
  • Represents buyers, sellers, landlords, tenants and operators in transactional matters with environmental law issues
  • Conducts due diligence, negotiates transaction terms (environmental warrantees). Recent experiences include negotiating such transactions for a chemical company and for an industrial laundries company
  • Negotiate mechanisms aiming at limitating and facilitating transactions
  • Represents clients for negotiation of complex contracts (sale and lease back regarding one or a portfolio of properties; real-estate sales; leases)
Brownfield redevelopment and remediation
  • Advised an energy supplier in the sale of important portfolios of former industrial sites (120 sites), with the transfer of the last operator administrative liabilities (“tiers-demandeur” mechanism) to the buyers, real estate developers
  • Advised numerous clients on individual sales of former industrial properties, implementing the “tiers-demandeur” mechanisms
  • Advised companies regarding complex contracts involving remediation issues
  • Advised numerous clients on legal requirements for remediation and redevelopment of contaminated land
Circular economy
  • Advised several companies and trade associations about the implementation of Waste French law.
  • Recent experiences include:
    • Advising a company manufacturing building materials and operating quarries about regulatory framework of recycling waste
    • Advising an online fashion retailer about the implementation of the Extended Producer Responsibility
Management of Industrial risks
  • Advised one of the biggest chemical platform in France on contractual agreements between the platform operators (large chemical companies), implementing new provisions of French environmental law, by allocating administrative obligations of each operator and pooled infrastructures/services.
  • Advised operators of chemical manufacturing facilities regarding the implementation of SEVESO regulation and implementation of PPRT regulation.
Litigation and enforcement
  • Represented a company manufacturing building materials and operating quarries, for the resolution of several significant disputes related to the management of excavated soils generated by the digging of underground subway lines in Paris area
  • Represented an energy supplier in disputes related to the environmental condition of former gas plant (tort liability or contractual liability linked to real estate transactions)
  • Represented an industrial laundry operator before the Administrative and the Civil Courts on a matter of contaminated land
  • Represented numerous companies before the Administrative Courts regarding the validity and enforcement of environmental permits
  • Represented numerous companies before the Civil and Commercial Courts regarding liability for environmental damage or breaches of environmental law
  • Represented a public works company before the criminal court regarding water contamination


  • Country Comparative Guide, Legal 500, Environmental Law, France, 2020, 2021 2022
  • Global Practice Guide, Chambers, Environmental Law, France, 2019, 2020, 2021
  • Implanter un data center en France : regards croisés en droit immobilier et de l’environnement – Business Immo - May 2021
  • Reprise d’entreprises industrielles en difficulté : bien anticiper les risques environnementaux – Le Moniteur – Avril 2021
  • Plateformes industrielles : les enjeux e la contractualisation - Le Moniteur – Août 2020
  • Les enjeux liés aux dérogations faune flore pour les activités extractives - Mines et Carrières – Avril 2019
  • Les si timides évolutions du droit de l'environnement – Usine Nouvelle - November 2018

Honors & Involvement

  • Fondatrice et Présidente du Cidde "Cercle interprofessionnel du droit de l'environnement" (Association interprofessionnelle en droit de l'environnement)
  • Secrétaire générale d'Elles&Droit (association du réseau des femmes juristes)

Speaking Engagements

  • Seminar “Le contrat de fortage” – UNICEM - January 2022
  • Seminar « Quel apport des travaux menés par le Sénat et l’Assemblée Nationale en 2020 sur la pollution des sols et la revalorisation des friches ? » - Intersol – 9 septembre 2021
  • Seminar « Premiers retours d’expérience sur le dispositif tiers demandeur » – Intersol – 5 novembre 2020
  • Seminar « Enjeux règlementaires des émissions industrielles » – Fiméa – 7 novembre 2019
  • Roundtable discussion regarding transfer of environmental liabilities “Sites et sols pollués, Procédure du Tiers-demandeur, quand et comment mettre en place la procédure? », hosted by Foley Hoag Paris, May 2019
  • Roundtable discussion regarding biodiversity « Dérogations faune/flore: comment gérer l'enjeu espèces protégées dans le cadre d'un projet », hosted by Foley Hoag Paris, November 2018