Illegal dump vs agricultural landfill: what changes with the Court of Cassation judgment of 19 December 2017

Picture the scene: you own a plot of land in Biscarrosse, in the Landes region. A dry valley, somewhat overgrown, you think that filling it with clean rubble – so-called inert waste – could make it buildable or improve its agricultural potential. You file a prior declaration with the town hall, they say 'ok'. But then: the authorities discover that the deliveries are multiplying, that the volume far exceeds what was planned, and that non-inert waste is mixed in. Suddenly, you are no longer a simple landowner developing his land: you could be prosecuted for operating a waste storage facility without authorisation and for irregular raising of the ground. This is exactly the story of Mr Y. and the company 'L'Or de nos collines', judged by the Court of Cassation on 19 December 2017.

But what exactly changes? How far can a landowner or farmer go who receives tonnes of inert waste to backfill his land? And above all, how not to fall into the trap of the illegal dump? This judgment, relatively unnoticed, provides essential answers for all landowners, farmers and even local authorities. undefined as a lawyer in Mont-de-Marsan, I see more and more cases where a simple landfill turns into a criminal dispute. It is time to clarify the rules.

In this article, I will tell you the story of this case, break down the reasoning of the judges and above all give you concrete advice to avoid ending up in the same situation. Whether you are a landowner in Saint-Vincent-de-Tyrosse, a farmer in Biscarrosse or a property developer in the Landes, these rules concern you.

The facts: a story that happens every day

Mr Jean-Paul Y. is the manager of the company 'L'Or de nos collines', a business that operates a plot of land in Biscarrosse. In 2011, he filed a prior declaration of works with the town hall to backfill a dry valley on his property. The stated objective is agricultural: to improve the topography of the land for better exploitation. The town hall agrees, and the works begin. But very quickly, neighbours and state services notice incessant activity: lorries dump significant quantities of materials, far beyond what was necessary for a simple agricultural development. Inert waste – rubble, crushed concrete, earth – but also, it seems, non-inert waste mixes with the fill. In short, an illegal dump is formed.

The public prosecutor's office opens an investigation. In 2013, Mr Y. and his company are prosecuted before the criminal court for two offences: operating an inert waste storage facility without authorisation (Article L. 541-30-1 of the Environmental Code) and carrying out a raising of the ground without planning permission (Articles R. 421-19 and R. 421-23 of the Town Planning Code). The defendants plead not guilty: they have a prior declaration, and the fill was intended for agriculture. But the court convicts them. They appeal.

The Bordeaux Court of Appeal upholds the conviction in 2016. For the judges, the planning permission (the prior declaration) had been granted for raising for agricultural purposes, but in fact, a veritable dump was operated, without any environmental authorisation. Mr Y. and his company then appeal to the Court of Cassation. They argue that their prior declaration was valid and that it exempted them from any other authorisation, in particular that provided for by the Environmental Code. The stakes are high: if the Court of Cassation followed them, it would mean that a simple building permit or prior declaration could authorise a dump of inert waste, which would be contrary to environmental protection.

The reasoning of the court – dissected

The Court of Cassation, in its judgment of 19 December 2017, dismisses the appeal. It confirms the decision of the Court of Appeal. Its reasoning is simple but relentless. It first recalls that Article L. 541-30-1 of the Environmental Code (now codified in Article L. 541-30-1, but since amended) subjects to prefectural authorisation any operation of an inert waste storage facility. This text aims to prevent illegal dumps. Next, it finds that the raising carried out by Mr Y. did not have as its purpose the carrying out of development, rehabilitation or construction works – contrary to what he claimed – but rather the storage of waste. In other words, the real purpose was to receive waste, not to improve the land for agriculture.

The Court dismisses the argument based on Article R. 425-25 of the Town Planning Code, which exempts from prior declaration or development permit inert waste storage facilities regularly authorised under the Environmental Code. It specifies that this exemption only applies if the facility has been authorised under Article L. 541-30-1. Here, no environmental authorisation had been obtained. The prior planning declaration cannot therefore serve as a substitute. In short, for the dump to be legal, a double authorisation is required: one under planning law and one under environmental law. And if the actual activity is waste storage, planning permission is not sufficient.

What few people know is that the Court of Cassation here carries out a qualification check: it examines whether the facts correspond to the legal definition of a waste storage facility. Regardless of what is written in the prior declaration, it is the reality that counts. If you say 'I am filling for agriculture' but you receive tonnes of waste continuously, the judges reclassify the operation as operating a dump. This is an important lesson for all those who think that a simple administrative paper protects them.

What this changes for you – concretely

This judgment has very concrete practical implications for different profiles. If you are a landowner, especially rural or agricultural, and you plan to receive fill, beware: you must distinguish according to the origin and quantity of materials. A small contribution of topsoil to level a garden is not a problem. But if you accept construction rubble, even inert, in large quantities, you risk falling under the regulations on waste storage facilities. For example, in Saint-Vincent-de-Tyrosse, a farmer who received 500 m³ of crushed concrete to fill a pond could be considered to be operating a storage facility if he has no environmental authorisation. Criminal penalties can go up to two years' imprisonment and a €75,000 fine (Article L. 541-46 of the Environmental Code).

If you are a farm tenant, you must be even more careful. Does your lease allow you to modify the topography of the land? Do you have the written consent of the owner? And above all, do not let public works companies dump waste without checking the authorisations. undefined, I have come across cases where a tenant, to earn a little money, accepted fill without realising that he was becoming an accomplice to an illegal dump.

For buyers, this is a point of vigilance in property transactions. If you buy land that has been filled, ask for the planning and environmental authorisations. Unauthorised fill can lead to an obligation to restore the land at your expense, and even criminal prosecution. Finally, property professionals (developers, notaries, agents) must inform their clients of these risks. A building plot that has been used as a dump can lose all value.

Four tips to avoid this type of dispute

• Always check the real purpose of the fill: Before accepting inert waste, ask yourself whether the operation has a development purpose (construction, agriculture) or simply storage. If it is storage, an environmental authorisation is mandatory. Establish a schedule of deliveries and keep a register.
• Obtain the necessary authorisations upstream: For a raising of more than 2 metres in height or an area greater than 100 m², a prior declaration is necessary (Article R. 421-19 of the Town Planning Code). But if the volume exceeds 2,500 m³ or the activity lasts more than 2 years, environmental authorisation (ICPE or IOTA) may be required. Consult a lawyer lawyer or the DREAL.
• Be wary of offers that are too good to be true: If a company offers to fill your land for free with 'clean inert waste', it is often a way for them to avoid landfill costs. You run the risk of becoming the receptacle of an illegal dump. Insist on a written contract specifying the nature, origin and volume of materials.
• Document your operations: Take photos before, during and after the works. Keep delivery notes, soil analyses (if possible), and administrative authorisations. In the event of an inspection, these elements will prove your good faith. If you are a farmer, have the chamber of agriculture certify that the fill genuinely improves the agronomic value.

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Further reading: related case law and developments

This judgment is part of a consistent line of case law of the Court of Cassation aimed at punishing illegal dumps disguised as agricultural works. One can cite a judgment of 20 October 2015 (No. 14-86.223) where the Court had already held that dumping inert waste on land without environmental authorisation constituted illegal operation of a storage facility. In 2019, the Court of Cassation also specified (No. 18-84.039) that the benefit derived from receiving waste (even free of charge) characterised the intentional element of the offence. In other words, it is not necessary to prove that the landowner knew it was illegal: the mere fact of having accepted the waste knowingly is sufficient.

The trend in the courts is therefore towards toughening. Judges are no longer fooled by declarations of intent. They look at the reality of the facts: volume, duration, nature of materials. For the future, it is likely that controls will intensify, particularly via drones and citizen reports. Landowners must therefore be extremely vigilant. Environmental regulations take precedence over planning permissions: this is the strong message of this decision.

What you must absolutely remember

Here is a 5-point checklist to avoid ending up in Mr Y.'s situation:

1. I receive fill on my land. → Have I checked whether it is a simple development or waste storage? If the volume exceeds 2,500 m³ or the delivery lasts more than 2 years, I consult a lawyer.
2. I have a prior declaration. → This does not exempt me from environmental authorisation if the operation is classified as a storage facility.
3. I am a farmer. → The fill must be justified by a genuine agricultural project (soil improvement, levelling). A simple filling of a valley without a specific project can be reclassified.
4. I am a neighbour of such a project. → I can report to the state services (DREAL, town hall) if I notice excessive deliveries. Environmental protection associations can bring a civil action.
5. I am a buyer. → I ask the seller for the authorisations and the history of the fill. I can have a soil study carried out to detect any waste.

In summary, remember that planning permission is not a free pass to store waste. If you have any doubt, do not hesitate to consult a professional. A simple consultation can save you years of proceedings.

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