Par
Philippe Roudeillat
Published on
June 27, 2024 at 10:16 a.m.
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Since its launch, a real estate project launched in Chambourcy (Yvelines) has generated opposition from certain residents, not from the town, but from the neighboring town of Poissy. The latter are residents of the land of more than 9.7 ha, located parallel to the A14 motorway and between Route de Poissy and Rue d’Aigremont.
This is where around 350 housing units must be built – 30% of which are social – but also facilities of collective interest and public service, common spaces and a central east-west service road.
“1,000 more motorists in the morning”
Called La Porte de Chambourcy, this project led by Nexity is the subject of numerous complaints on their part relating to its impact on current roadson the environment, but also on future inhabitants.
“With the various programs underway in Poissy and this one, that will mean almost 1,000 more motorists in the morning. This will lead to real saturation of existing roads as well as an increase in pollution. »
But what is most shocking for them is indeed the location of the project.
Noise pollution
“In addition to the fact that we really have the impression that the mayor of Chambourcy prefers preserve your fellow citizens by concrete on the other side of the A14, on the Poissy side, this project is totally absurd,” they explain.
“In fact, it proposes to house residents 50 metres from the A14 motorway with noise pollution of over 70 decibels, according to the Regional Environmental Authority Mission (MRAe), while the WHO considers that road infrastructure produces harmful effects on health above 53 decibels.”
Residents who also regret that their remarks recorded during the public consultation were not sufficiently taken into account, highlight another big problem: the embankments.
Fears linked to maintaining the embankments
Initially, the project provided for the fill deposited during the construction of the highway on the site to be removed to “rediscover the natural terrain” and thus allow the buildings to integrate into the landscape and remain ” invisible from the surroundings», that is to say from Poissy and the motorway.
While these points appear in black and white in the document summarizing the observations and proposals following the Electronic Public Participation (PPVE) prior to the issuance of abuilding permitlocal residents fear a turnaround.
“We learned that Nexity would ultimately intend to build villas on the old embankments that have not been stabilized to date, which would result in these houses being 3 meters above ours. This is unimaginable for us. We wrote to Mr. Morange and Nexity regarding this point and we never heard back from them. »
We contacted Nexity on this specific point of the embankments, we are awaiting their response.
The answers of Pierre Morange, the mayor of Chambourcy
Asked about the project, the mayor of Chambourcy, Pierre Morange, explains that he does not fully understand the concerns of residents of Poissy.
According to him, La Porte de Chambourcy was “prepared with the idea of anticipating possible requests from local residents and providing all the necessary conditions to preserve the environment of those already installed. All the presidents of the two large co-ownerships concerned validated, signed and approved the project.”
After recalling that the project would include the creation of a natural space of more than four hectares, completely unbuildable, the mayor indicates that it would rather represent a good thing for local residents.
“The program, in terms of real estate, will constitute, thanks to its physical footprint, a possible noise barrier, if I may say so, in relation to possible noise pollution from the A14. Nuisances which, moreover, do not exist thanks in particular to the merlons which are sufficiently substantial and which are also tree-lined. »
Thus, for the Camborian mayor, the argument of 70 dB put forward by the disgruntled residents would not hold and he assures that the level of exposure to noise to which future residents will be subjected will comply with the standards.
“It will be enough to demonstrate it, that is to say that other decibel checks will be carried out and they will show that, in fact, the level of decibels to which the populations are exposed is entirely in accordance with the regulation. »
To argue in favor of the project, the elected official adds that its marketing is going very well in a context that is currently rather difficult for real estate.
“Nexity can’t believe it. So, it really shows the quality of life and the living environment around this project, but also the image that the town of Chambourcy carries.”
As for the subject relating to travel, Pierre Morange specifies that La Porte de Chambourcy is part of a larger project which aims to reclassify the Poissy road. The latter would include, among other things, a pedestrian mall, a cycle path, but also a footbridge, attached to the current bridge, to span the A14 motorway.
“This will therefore allow our friends from Pisciac to move around in complete safety, on foot or by bike, on a path at least 3.5 metres wide, surrounded by a double row of trees.”
A traffic light should also be installed to allow pedestrians to cross the Poissy road and go to the Saint-Germain-en-Laye forest.
“And all these elements have been validated, I insist, by the presidents of the two co-ownerships to which these residents belong,” insists the mayor.
More generally, Pierre Morange specifies that this project, which will generate an increase in the number of inhabitants, increasing the population of the commune from less than 6,000 today to 7,500/8,000, must allow two things. First of all, to respond to the State’s injunctions to build new housing and then to act to deal with a certain aging of the population putting the commune in a situation of over-equipment in all areas.
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