“We have it for 100 years”: The compensatory measures for the Cluzel rating will last over time

It's no secret that each project undertaken leading to the destruction of biodiversity requires builders to provide environmental compensation. These can sometimes last a certain time after the end of the work so that the biodiversity can fully regain its place. The Cluzel coast, located on the RD 653 in the communes of Labastide-Marnhac, Trespoux-Rassiels and Villesèque, is the perfect example. This area is known to be accident-prone because of the many very dangerous bends, with very narrow passages, particularly if a car has to pass a truck.

The Department is therefore responsible for rectifying the situation by redeveloping the area. There are 3.5 km of roads that must be modified, including the widening of the road and the creation of a new lane to eliminate these turns. But changing the route also means having consequences for biodiversity. For this, before starting the earthworks of the new road, the community must compensate for the losses by redeveloping the territory following the State's recommendations. “The duty of compensation will last at least 100 years,” confides the president of the Department, Serge Rigal.

The wetland

The work on the Cluzel coast will also impact 3,986 m² of wetlands according to a report from the Mrae (Regional Environmental Authority Missions). “These areas must be compensated for at least 150%, or 5,979 m² of wetlands to be restored,” notes the organization, in its opinion delivered in June 2023. Currently, this body of water is located at the edge of the road, and will be completely demolished during the next phase of work. “It will be destroyed and completely recreated south of the bend,” specifies Serge Rigal.

Preservation of wildlife…

Wildlife will also be impacted by this construction site. To compensate for the destruction of natural habitats, the Department has notably stockpiled wood to become a refuge for wild animals such as weasels throughout the section. Small piles of stone, called “resting places” are also provided for reptiles such as lizards and snakes. “In total, we created around ten resting and laying roosts,” explains Serge Rigal. “We also planted fences to ensure that amphibians and reptiles can stay in their area.” The community still has planting work for the raptors.

…and the flora

Concerning the deforestation of rights-of-way undertaken in November, the community can sign an agreement with the owners of the woods for maintenance or replant nearby. There is also a risk regarding the degradation of the flora around the site, in particular the Thatched Sandwort which is a protected species. The Department must therefore take into account the presence of this plant during the construction site. “It is proposed to revegetate some portions of the current roadway and plant hedges […] and create new afforestation”, recommends the Mrae.